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Ⅰ. Steel column installation for steel structure construction
1. Installation sequence of steel column:
① Foundation setting out → ② binding → ③ hoisting → ④ correction → ⑤ final fixation
2. Installation method of steel column:
(1) Setting out:
A. Elevation control:
In this structural steel construction project, iron parts and "middle bars" are controlled according to the depth of concrete cup mouth, the elevation of steel column bottom and the embedded elevation in the center of the bottom of the cup mouth during the construction of concrete foundation (φ30 steel bars), the elevation of top surface of "middle reinforcement" is based on the elevation of steel column bottom, and the elevation error of iron parts is controlled in ± Within 1mm.
To ensure the steel column is embedded in the foundation accurately and firmly φ On the 30 "middle reinforcement", weld a steel plate with thickness of 20 at the bottom of H-shaped steel column, as shown in the figure below.
When installing structural steel column, clean the foundation cup mouth first, and check the embedded elevation control "middle reinforcement" in the foundation（φ The actual height of 30 steel bars) is not necessary because the elevation embedded in the foundation construction has been controlled precisely, and no additional iron pad is needed. The method is simple, fast and efficient for the treatment of steel column feet. The construction is fast and the force is reasonable. When the column is lifted, it can be adjusted freely in several directions when the elevation is unchanged.
B. Before installation, the vertical and horizontal axis reference lines of the foundation plane shall be placed on the top of the cup mouth by woodworking ink bucket as the installation and positioning line of steel column.
(2) Column binding and hoisting:
A. after the steel column enters the site, the steel column shall be arranged according to the position of the lifting plan, and the model and number shall be checked to see if they are correct. The plane position of steel column after entering the site is shown in the following figure.
B. Before the column is lifted, a horizontal line shall be drawn with red oil paint 2300mm upward from the bottom of the column, so as to recheck the plane elevation datum before and after the installation and fixation.
C. the column installation belongs to vertical hoisting. In order to keep the suspended column drooping and facilitate the positioning, the binding point is determined at the lower part of the bracket. In order to prevent the sharp edges and corners of the column edge from damaging the lifting rope during hoisting, the rubber belt of the old car is used to separate and cover the edge and corner lifting rope. Pay attention to binding firmly and easy to remove.
D. temporary steel ladder and high-strength bolt installation fixture of working platform shall be bound on the steel column.
E. in order to avoid the free swing of the suspended column, hemp rope should be used to tie the upper part of the column bottom as a restraint rope and adjust the direction.
F. according to the site conditions, the rotation method is adopted for hoisting
After the preparations before hoisting are ready, the trial hoisting shall be carried out first. When the height of the steel column is 200 mm above the ground, the hoisting shall be stopped to check whether the rigging is firm and whether the crane is stable. After confirming that there is no problem, the crane can be directed to slowly lift, rotate to the top of the cup mouth, and then slowly descend. When the distance between the bottom of the column and the design position is 40-100 mm, adjust the two datum lines of the column body and the foundation to reach the accurate position, direct the crane to descend to the position, and temporarily fix the column with steel wedge (or wood wedge) and wind rope to remove the hook.
•Key points of rotation method:
The method of lifting the column by rotating the column around the column base is called rotation method, as shown in figure a below. When the column is hoisted by rotation method, in order to improve the hoisting efficiency, when the steel column enters the site, the binding point of the column, the center of the column base and the center of the cup foundation should be placed on the arc with the crane stop point as the center and the distance from the stop point to the binding point (i.e. the turning radius of the column), as shown in Figure B below.
The steel column hoisting is shown in the figure below:
(3) Preliminary correction of column:
The column should be corrected on the side with large deviation first, and then on the side with small deviation.
A. The correction of column generally includes plane position, elevation and perpendicularity.
B.When the steel column is hoisted in place, it is one-time alignment, and generally it does not need plane re correction. For the elevation of the column, it has been used before hoisting φThe embedded "middle reinforcement" can accurately control the elevation. Generally, it only needs to be checked, and it does not need to be corrected. Therefore, the steel column correction is mainly to correct the verticality and recheck the elevation.
C.In this project, the perpendicularity of the column is observed, and two theodolites are used for measurement and correction.
• First, place the theodolite on one side of the column, align the longitudinal center wire with the baseline of the column base, and then fix the screws of the horizontal plate.
• Measure the center line of the column and observe from bottom to top. If the vertical center line is aligned, that is, the column is vertical. If it is not aligned, the column shall be adjusted until it is aligned with the longitudinal center line of theodolite.
• Measure the horizontal line in the same way so that the center line of the other side of the column is perpendicular to the horizontal axis of the baseline. After the column is accurately positioned, the column can be fixed.
• Verticality correction of steel column: distance adjusting screw rod and steel wedge are used. Due to the small contact surface of the long side of the column, the base plate is set during the construction. The details are as follows.
The manufacturing dimension of steel wedge is shown in the figure below:
(4) Final alignment and fixation of steel columns:
After the steel column is hoisted in place, the column correction mainly involves the adjustment of elevation and the correction of verticality; The correction method can use tools such as wind rope, Jack, crowbar and steel wedge (or wooden wedge) to apply vertical force and lateral force of pulling, jacking, supporting and prying to the steel column.
Adjust the verticality, positioning axis and elevation of the column. After confirming the correctness, the gap between the steel column and the foundation cup mouth shall be poured with C40 fine stone concrete. The expansive high strength grouting material is preferred.
ⅡProtection of site components:
1) The unloading of components shall be careful to prevent damage and prevent collision and extrusion between members.
2) The members shall be stacked in order at the designated site, and the number of layers stacked by steel beams shall not exceed 3 layers to prevent the members from squeezing and deformation.
3) Before hoisting, oil, sediment and dust on the surface of the components shall be cleaned.
ⅢThe placement of components and the requirements for the site
1) When unloading, the components are unloaded directly near the installation position and within the radius of rotation of the crane. Mark the number clearly with a clear color pen to facilitate lifting.
2) The components are placed in order in the site, and a certain gap is reserved between adjacent components to facilitate binding.
3) The site shall be solid and flat, and the components shall not be polluted due to rain and snow, and the vehicle with 30 ton level can be walked.
ⅣSteel structure building installation
Preparation before hoisting of steel column:
Before hoisting the steel column, the cable wind rope shall be tied to the column body. The lifting point shall be at the bracket position, and the double wire rope shall be set up and down, and the snap ring can be checked to be qualified before entering the next work. Before hoisting the steel column, the positioning axis, foundation axis and elevation, cup opening size and the height of the bottom standard of the steel column must be inspected and handed over and accepted. The number, outline dimension, screw hole position and diameter of the steel column shall be comprehensively reviewed. After confirming that it meets the requirements of design drawings, draw out the installation center line and the lower end elevation line of the steel column.
ⅤSteel column hoisting
(1) installation method of steel column
Before lifting the steel column, the wooden board shall be fixed at the column foot to prevent damage to the column foot and other structures.
Special hoisting steel wire rope is used for steel column binding. Wood or rubber sheet shall be used to prevent damage to the steel column.
The steel column is installed by a 25t truck crane. When the steel column is lifted, the crane shall hook and rotate the arm while lifting the steel column to make the steel column vertical away from the ground.
(2) positioning adjustment and temporary fixation
When the steel column is lifted to 200mm above the base cup mouth, it will be stable, and it will fall slowly at the base cup mouth. Avoid hitting the concrete edge of the foundation cup mouth during falling. After implementation, use special angle ruler to check, adjust the steel column to make its positioning line coincide with the foundation positioning axis. Three people are required to operate the adjustment, one person moves the steel column, one person helps to stabilize and the other person conducts the test. The positioning error is controlled within 2mm.
(3) when adjusting the elevation of the steel column, place the pad iron at the bottom of the cup foundation, use the level to super level the bottom plate elevation of the steel column as the top elevation of the pad iron, so that the elevation after the steel column is in place can meet the design elevation requirements, mark the elevation datum point on the column body, and then use the level to measure the installation elevation after it is installed in place.
(4) the verticality of the steel column shall be preliminary adjusted by the level ruler. Then two theodolites are used to observe from both sides of the column at the same time, and the adjustment is carried out by relying on the cable wind rope. As shown in the figure below:
Diagram of verticality adjustment of steel column
(5) after the adjustment, use eight iron wedges to position the gap between the bottom of the steel column and the base of the cup mouth, and then spot weld the column to make it stable.
Ⅵ Steel beam installation
Steel beams must be stacked in order on site for this steel work in construction. Sleepers must be placed in the middle of each layer of steel beams. Two lifting points for steel beam hoisting are selected on both sides of the center of gravity of the steel beam. The two lifting points should be 800mm away from the support and the middle of the span, and the distance between the two lifting points should be increased according to the length of the steel beam.
To ensure safety and prevent the sharp edge of the steel beam from cutting the steel wire rope, the steel wire rope shall be protected, the angle of the sling shall not be less than 450, and the steel beam shall be directly tied and rolled with the steel wire rope or lifted with a special fixture.
Before hoisting the steel beam, install the safety rope on the steel beam. When hoisting, hang two sliding ropes at both ends of the steel beam. Two people pull two sliding ropes respectively. The hoisting speed of the steel beam must be slow. In order to ensure safety, personnel should not stand directly under the beam. The cloth bags specially used for placing high-strength bolts are put on both ends of the steel beam. When the steel beam is hoisted above the position, the steel beam is put in place. The falling speed of the steel beam is controlled at 3m / min. two installers are arranged at both ends of the steel column head to prepare for the installation of the steel beam. When the steel beam is close to the in place position, two installers should hold the upper flange of the steel beam with their hands respectively, drag the steel beam to the in place position, and prepare to install the high-strength bolts.
ⅦInstallation of retaining structure and support corner brace
1) Installation of roof purlin: when the main structural steel forms a frame section, the roof purlin is hoisted to the main beam of the roof with a crane and installed manually. The purlin can also be manually pulled onto the roof with a white synthetic rope for installation. After the installation of purlin, the purlin support is installed in time.
2) Wall purlin installation: when the main structure forms a frame section, the construction personnel stand on the scaffold platform and pull the wall purlin to the installation position with white comprehensive rope.
3) Corner brace installation: after the main body is welded, the corner brace is connected.
ⅧMeasurement and correction of steel column
Verticality correction of steel column
When the steel column is installed and corrected, two theodolites are set up on the control line with 90 degree translation of 1 meter each other, and the theodolite operators observe the small steel ruler on the top of the column, measure the deviation of the steel column and direct the correction.
A. Control the verticality of the steel column between the first hoisting joints.
B. Steel column calibration is divided into four steps:
initial calibration during initial tightening; Re-calibration before final tightening; Tracking and monitoring during welding process; Final result measurement after welding.
The perpendicularity can be roughly controlled with a long level before the initial tightening, and it can be accurately corrected after the frame is formed. After welding, retest shall be carried out, and the measurement results shall be compared with those at final tightening, so as to be the basis for the next construction.
C. Verticality measurement method of C steel column
Initial correction: the perpendicularity of the steel column is preliminary adjusted with a level ruler.
Accurate correction of steel column perpendicularity: one column grid is used as an installation section for the hoisting of the main frame until the hoisting of three continuous complete sections is completed
After the whole is formed, the measurement correction can be inserted. Two theodolites are used to observe from both sides of the column at the same time, and the wind rope is used for correction and adjustment.
ⅨSteel structure survey
2) Elevation control of steel column
Based on the elevation reference point of the plane layer where the steel column is located, the deviation value of the horizontal elevation of the steel column is measured with the level gauge and the correction is directed.
3) Steel beam measurement
After the steel column is hoisted and corrected, the +1.00m control point shall be measured to each steel column according to the site level as the basis for vertical transfer of elevation and the elevation of beam installation; Pop up the center line of the steel beam on the surface of the steel beam.
The control axis is measured to the column body to control the beam position offset; The accuracy of beam elevation is controlled according to the control point of column elevation. Set up theodolite on the floor platform, and then look at the cross angle to the axis of the corresponding beam. Aim at the center line of the upper surface of the beam to the other end with theodolite to see if the number coincides with the axis of the beam.
Calculation of survey and lofting data
In this project, the computer automatic query method is used to calculate the survey and lofting data. The specific steps are as follows:
1) The establishment of data model
Firstly, according to the design coordinates and the dimension relationship of each building in the design drawing, the building, building axis, control line to be lofted and so on are drawn in AutoCAD according to the proportion, and the data model is established.
2) Survey and lofting data query
After drawing the survey loft data model, the survey loft data such as the angle and distance between the known basis (axis control pile, lofted axis, etc.) and the control line to be lofted are queried by using the command of dist of AutoCAD.
3) Advantages of computer automatic query
The method of computer automatic query is used to obtain the required measurement and positioning data. It is not only convenient to calculate, but also has high precision. The distance precision can be set to 0.1mm, 0.01mm, and the angle precision to 0.0 ", 0.00" or higher according to the actual situation.
ⅩConstruction of high strength bolt
1. Preparation before installation
1) Test and inspection of high strength bolt
Anti slip coefficient test
The project adopts class 10.9 large hexagon high-strength bolts. The anti slip coefficient test of high-strength bolts shall be conducted by taking the most representative thickness of the plate in the project for test, and three groups shall be made.
The size of the specimen plate is as follows:
Axial force test
Randomly select the bolts to be installed at the construction site, and 8 sets of bolt pairs are selected for re inspection in each batch.
2) Transportation and storage of high strength bolts
transport
The form, size and technical conditions of high-strength bolt connecting pair shall be manufactured and supplied by the manufacturer according to batch, with factory certificate and high-strength bolt connection pair, which shall conform to the provisions of national standards gb1228-1231-84 and gb3632-3633-83. High strength bolts with large hexagon for steel structure
The connecting pair consists of a bolt, a nut and two washers. The combination of use shall meet the national standards, and the high-strength bolt connection pair shall be supplied with storage and transportation in the same batch.
The high-strength bolt connecting pair shall be installed and placed lightly during loading, unloading, transportation and storage to prevent the packing box from being damaged or damaged.
Storage of high strength bolt warehouse
1. the high-strength bolt connection pair shall be cleaned according to the specification, batch number and supply date of the packing box, and shall be kept in the indoor warehouse, and the accumulation shall not be higher than 3 layers. The indoor moisture-proof, long-term dry, rust and dirt contamination shall be prevented, and torque coefficient shall be prevented from changing. The bottom layer shall be more than 300mm above the ground level.
2. when installing on site, the quantity of high-strength bolts required on the day shall be issued. The rest should be kept properly. Do not put it in disorder, damage the thread, and be contaminated with dirt.
3. before using the long-term storage high-strength bolt connection pair, a comprehensive quality inspection shall be conducted again. If any abnormal phenomenon is found after unpacking, the inspection standard shall be conducted according to the relevant provisions of national standards gb1228-1231-84 and gb3632-3633-83. It can be used after being qualified.
3) Construction management of high strength bolts
1. Construction Manager
When carrying out the construction of this high-strength bolt, the high-strength bolt manager shall be determined first to be responsible for the project management, quality management and guidance of the construction personnel.
2. weather management (climate conditions)
In principle, no operation shall be carried out during rainfall and snowfall. If rain or snow fall occurs during operation, the speed shall be accelerated to lock the unfinished ones
3. friction surface management
Before tightening, the friction surface shall be inspected first. If there are any attachments to reduce bearing capacity of friction surface, such as rust, oil, paint and residue, metal brush, sandpaper and oxygen acetylene flame shall be used for removal.
4) Construction of high strength bolts
1. final tightening of temporary bolts
Before inserting high-strength bolts, temporary bolts shall be used to tighten the connection tightly, if the materials of the connection parts are bent or warped, they shall be corrected.
If the difference of holes is within 2mm, it can be corrected by cutter.
If the difference of holes exceeds 2mm, reasonable treatment methods such as replacement of panel shall be adopted based on consultation with management personnel, and gas cutting and reaming are not allowed.
2. high strength bolt insertion
The nut and gasket of high-strength bolt shall pay attention to the installation direction, and install according to the following figure.
When inserting bolts, pay attention not to attach rust, dust, oil, etc. to the bolts. In addition, do not force into the bolt hole during construction to avoid damaging the thread.
3. initial tightening
After the temporary fixing bolts are locked, confirm the compactness of the components.
After initial tightening, mark with white marker through bolt nut, gasket and component.
When using the inspection wrench, although the torque value can be confirmed by the contact sound, it is easy to over tighten if the mechanism continues to apply force, so it should be noted.
4) Final tightening
After initial tightening, use special fastening wrench to lock until the neck is broken.
In principle, the bolts inserted on the same day shall be screwed out on the same day.
Industrial steel building mainly means that the main load-bearing components are composed of steel. Including steel pillars, steel beams, steel structure foundations, steel roof trusses (of course, the span of the factory building is relatively large, and it is basically steel structure roof trusses now), steel roof, note that steel structure walls can also be surrounded by brick walls.
What are the characteristics of Industrial steel building?
What are the industrial characteristics of Industrial steel building?
What are the characteristics of Industrial steel building?
The characteristics of the steel construction workshop are:
1. Industrial steel building is light, high-strength and has a large span width.
2.The construction time of industrial steelworks is short, reducing investment costs accordingly.
3. Industrial steel buildings have poor fire resistance and corrosion resistance and steel structures should not be used in areas with low temperatures.
4. Industrial steel building is easy to move and recycle without contamination.
The roofs of flat buildings are mostly inclined roofs, so that the roof construction essentially uses a triangular roof chair system made of cold-formed steel components. The light steel components form a very strong structure after sealing the building plates and plasterboard plates. "Plate-rib structural system", the industrial steel structure of this structure has a stronger earthquake resistance and resistance to horizontal loads and is suitable for areas with earthquake intensities above 8-degree.
Air resistance
The Industrial steel building has a low weight, a high strength, a good overall stiffness and a strong deformability. The building weighs only a fifth of the brick concrete construction and holds a hurricane of 70 meters per second so that life and property can be effectively protected.
Durability
The housing structure of the Industrial steel building consists entirely of cold-formed thin-walled steel component systems. The steel frame consists of a high-strength, cold-rolled, fire-soaked super-corrosion protection sheet which effectively avoids the influence of steel sheet corrosion during construction and use and increases the durability of light steel components. The durability of the structure can reach 100 years.
Why do we have to carry out daily maintenance on Industrial steel buildings?
Industrial steel buildings must be regularly cleaned and maintained. Under normal circumstances, it must be inspected and maintained once a year. When cleaning the outer wall of the Industrial steel building, you must be careful not to contaminate anything. Do not use steel wire balls, brushes and other abrasive cleaning agents. If you use clean water, you should rinse from top to bottom. The branches, leaves and similar objects on the Industrial steel building should be cleaned in time to avoid unnecessary problems due to the delay. If the surface of the metal plate for industrial steelmaking is damaged, it should be repaired in time to prevent the surface of the metal plate from corroding by sun and rain. If necessary, use all coated high-elastic nanomaterials to protect the metal roof plate, act effectively in thermal insulation and sealing and save energy for room climate.
Seeing this, do you also want to order a Industrial steel building? If necessary, you can contact Qingdao Xinguangzheng Steel Structure Co., Ltd. they will provide the Industrial steel building of the best quality.
Steel structures are a new type of construction system that offers the benefits of low weight, easy installation, short construction time, good seismic performance, fast investment recovery and low environmental pollution. It is therefore generally preferred by all parties in the industry. Under the call for green construction, energy saving, environmental protection and resource recycling, steel structures have gradually become widespread in agricultural steel building and the scale of the steel construction industry has expanded further.
1. The machinery and equipment of the agricultural steel building are operated and maintained by designated personnel, and the operating certificates are complete.
2. Mechanical operation part and on-site electricity requirements:
a. The rotation and dangerous parts of various machines and electric machinery must be equipped with protective devices.
b. Electrical equipment and wiring must be well insulated, with rain-proof and moisture-proof facilities.
c. The electrical box has a door, color code and number, which meet the installation height. The high-voltage leakage protector and zero grounding are complete. The switch box and electrical equipment must be "one machine, one switch, one leakage", and the fuse and actual equipment load Match.
d. When installing electrical equipment, the switches, circuits, grounding devices, etc. must be inspected, and they must be intact and undamaged, with good insulation.
(1) The agricultural steel building has a reasonable structure, a 360-degree undercut connection, and no bolts on the roof, which completely avoids water seepage and water leakage.
(2) Adopt self-fixing bolts to fix, simplify the operation and greatly reduce the labor intensity of workers. There is no need to set up a scaffold fixing nut, which improves the safety of operation.
(3) The boom of agricultural steel building is detachable and the angle can be adjusted freely, which is suitable for simultaneous construction of arch roofs with multiple spans.
What are the construction requirements for agricultural steel building?
1. First, according to the functional requirements of agricultural steel building, adopt a corresponding reasonable structure system. Achieve advanced technology, novel structure, and achieve the unity of architecture and structure.
2. The agricultural steel building is mostly based on rods, so the size of the rods is as modular and standardized as possible, which is convenient for mechanized manufacturing, transportation, installation, and improves productivity.
3. The agricultural steel building adopts high-efficiency steel with high economic indicators.
4. The nodes of agricultural steel building are very important. Appropriate connection methods should be adopted to make the node design consistent with the simplified structural calculation model. In the past, most of the structural damage occurred at the nodes, so the nodes must be carefully designed and constructed. Advanced and reliable connection methods are used.
Qingdao Xinguangzheng Steel Structure Co., Ltd. employs more than 100 workers, through the efforts of their entire staff, the agricultural steel buildings of high quality, widely used in a variety of architecture, have shared the broad masses of the worldwide market for over a decade.
Generally speaking, the installation procedures of industrial steel building include installation of steel columns, installation of inter-column supports, temporary installation of steel crane beams, roof beams, roof supports, steel crane beams, etc., correction, fixation, and structural installation of maintenance.
What is the specific process of industrial steel building construction?
How to regularly maintain industrial steel building?
How to consider the cost of industrial steel building construction?
1. Lifting the main structure of industrial steel buildings: connecting steel carriers on the ground, erecting steel columns, lifting steel carriers, connecting secondary structures, correcting the deviation of the main structure, installing crane carriers (optional), lifting intermediate layers (optional), and coating with fire resistant paint pack.
Main control quality: The deviation of the main structure should meet the specifications and design requirements and the initial and final application of high-strength screws should meet the requirements.
2. Installation of secondary structure: roofing posts, roof wall supports, flange supports, etc.
3. Laying of roof plate and insulation layer: first lay insulation layer, then assemble roof plate (in some projects a position of steel fabric is also placed under the insulation layer to prevent a fall of the insulation layer, this mainly depends on insulation layer level)
Main quality control: The roof is mainly waterproof, therefore the plate should be covered with the plate, the nail position, the glue coating should be full or not, the glue should be wiped clean and the coating on the surface of the plate should not be damaged to rust etc. to avoid.
industrial steel building wall maintenance and installation: mainly the installation of wall insulation and wall panels.
The main quality control of industrial steel building: the wall is mainly an aesthetic problem, and a window area is waterproof. There is also the problem of installation deviation. For example, the bottom should be flat, the entire plane should be flat, the flatness deviation between the board and the board should meet the requirements, and so on.
The detailed structure of the industrial steel building: mainly the installation of some trims, such as the wrap angle between the roof and the wall, the wrap angle at the corner of the wall, the flooding board between the wall panel and the brick wall, the door and window trim, etc.
The price of industrial steel building can only be compared with certain basic conditions, such as whether it is imported or domestic color panels, its thickness, coating; insulation material and thickness; whether there is a skylight; workshop bays and spans; whether there are cranes, crane tonnage, Many factors such as the level of the work system are related, and the impact of the price difference in other regions and the qualification level of the construction unit cannot be ignored.
The industrial steel building has achieved an irreplaceable position in industrial production. Qingdao Xinguangzheng Steel Structure Co., Ltd. is committed to providing different kinds industrial steel buildings of high quality for all customers from all over the world.
Steel building accessories has the advantages of overall light weight, saving foundation, less materials, low cost, short construction period, large span, safety and reliability, beautiful appearance and stable structure. Steel structure workshop is widely used in construction industries such as long-span industrial workshop, warehouse, cold storage, high-rise building, office building, multi-storey parking lot and residential house.
How to use the machine to remove the rust spots on the surface of Steel building accessories?
For Steel building accessories that have been used for a period of time, there are inevitably some attachments on the surface, such as rust, dirt, dust, old paint film, etc. Before painting the surface of Steel building accessories, if these attachments are not completely removed, although they can be temporarily covered after painting, they play a role of isolation, which makes the coating and the component substrate bond If the strength is severely reduced, the paint film will fall off prematurely, which will eventually reduce the corrosion resistance of the surface coating and fail to play the protective role of the coating. Therefore, before painting the surface of the component, the attachments on the surface of Steel building accessories should be thoroughly cleaned.
In order to improve the quality of rust removal and work efficiency. To improve the working conditions of construction workers, the current Steel building accessories derusting work has adopted a large number of wind-driven or electric small equipment. The main rust removal methods using equipment are:
(1) Angle grinder: This small pneumatic equipment is mainly used to clean flat areas. It can use sandpaper, grinding wheels and wire brushes as needed.
(2) Needle Bundle Derusting Machine: This kind of small pneumatic equipment is generally equipped with 30-40 needle bundles, which can be adjusted with different working surfaces, which are mainly suitable for curved, narrow, uneven and cracked places.
(3) Single-head cold air gun: This small pneumatic equipment is also called zinc knocking. It uses the impact of the knocking head to remove rust. The diameter of the shovel head is generally 25-40mm, and it can impact 1000 to 6000 times per minute. Suitable for relatively narrow places.
One of the main accessories of Steel building accessories is the double-hole connection accessory, which is mainly used to connect with the corners. The corners on both sides of the right-angle connection can reduce the pressure on the alloy. At the same time, the recesses of the building materials can be based on the aluminum alloy frame.
2. Single hole connector
Steel building accessories also has an important accessory, the single-hole connector, which has a completely different function from the double-pipe connector. It is mainly used for the affinity connection between the aluminum alloy frame and the ground in the ground installation. Therefore, the single-hole connector has The role of anchor bolts.
The Steel building accessories have been widely used in daily life and industrial production. Qingdao Xinguangzheng Steel Structure Co., Ltd. can provide the best Steel building accessories for their customers.
Residential steel building is a residential system composed of an envelope structure and a steel supporting structure. It is a new type of energy-saving and land-saving residential system. Its steel structure residence abandoned solid clay bricks and effectively used land resources. Compared with traditional houses, steel structure houses have advantages in terms of use function, design, construction and comprehensive economy.
What are the reasons why people choose Residential steel building?
What should the choice of Residential steel building structural system look like?
What is the framework system used by Residential steel building?
1. Residential steel building energy saving and environmental protection
The main body of the Residential steel building is steel components, and the wall material is thermal insulation mortar, which not only meets the requirements for energy saving, but also can be recycled. It is a green and environmentally friendly recycling building that meets the requirements of sustainable development. The thermal resistance can reach a brick wall thickness of about 1m. At present, the global population is large and energy consumption is large, and the promotion and application of steel structure housing is the final choice.
In residential buildings, there are many lines of professional plumbing and electricity pipe network, which will reduce the effective use area in traditional buildings. In Residential steel building, there are many holes or holes in beams and columns, which is easy to form a cavity for wiring layout. Moreover, the beam can be artificially made into a honeycomb shape, which is convenient for line layout, which not only saves the net height of the building, but also increases the use area.
What should the choice of Residential steel building structural system look like?
According to engineering practice, the commonly used Residential steel building structure system can be selected with reference to the following scope:
The 4th to 6th floors are the steel frame system, the steel frame-support system, and the steel frame-shear wall system; the 7th to 12th floors are the steel frame-concrete core tube (shear wall) system.
The section form of steel components should be hot-rolled H-section steel, high-frequency welded H-section steel and steel tube concrete.
The light steel frame system is a load-bearing frame composed of hot-rolled H-shaped steel (or I-beam), high-frequency welded H-shaped and cold-formed square pipes, and a steel structure residence with composite curtain walls or infill walls as the enclosure structure system.
The wall panels in the picture collection are made in the factory with fly ash as the filler, sulfoaluminate as the cement, polystyrene foam (EPS) as the core material, and glass fiber mesh as the reinforcement material. A lightweight board. Special adhesive is used to bond the plate and the light steel frame, and between the plate and the plate. To prevent thermal bridges using double-layer plates.
Qingdao Xinguangzheng Steel Structure Co., Ltd., as a leading company in China's Residential steel building, has committed to providing the most suitable Residential steel building at a reasonable price, and whatever it takes to satisfy the customer’s needs.
13/8/2020· In January 2021, the Ministry of Steel, Government of India, signed a Memorandum of Cooperation (MoC) with the Ministry of Economy, Trade and Industry, Government of Japan, to boost the steel sector through joint activities under the framework of India–Japan Steel Dialogue.
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Arab Suppliers is the leading company supplying specialized industrial materials
Steel Frame Structure Customized Design According to Your Detailed Size: Length ( mm) x width (mm) x height (mm) Two Story Steel Structure Customized Design According to Your Detailed Size, multi-story high-rise Steel Structure is also avalable Prefabricated Steel Building PEB Prefab Steel Structures For Factory Building, Warehouse, etc
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The number of exporters and known export value (where possible) are available by: size, company type, and industry; product by NAICS code; export market (individual country or select world region); state; metropolitan statistical area (MSA); and 3- or 5-digit ZIP code. Go to the Exporter Database Export Database Fact Sheets
Indiana Steel Buildings and Prefab Metal Kits | AMF Steel Buildings
No middleman! No Games! and No Hassles! We take pride in our customer service and we know the Indiana snow loads, wind speeds, and building codes to ensure your getting a great building that will last for a very long time!
US Functional, LLC | Medical Necessity Compliance Tests
At US Functional we provide Physical Performance Testing by our certified healthcare professionals at the point of care with same day report delivery. We use FDA registered …
Steel structure workshop manufacturer
The steel used in the design of the steel structure workshop has high strength, light structure, and large span of the manufacturing workshop, which can be made into a structure with a large span. The steel of the steel structure workshop is weldable, which greatly simplifies the connection method of the steel structure and is suitable for the manufacture of various …
Angela Phipps2022-04-28 08:43:53
The company comply with the contract strict, a very reputable manufacturers, worthy a long-term cooperation.
Melissa2022-04-24 00:23:32
They have all the odd parts you might be looking for. Fast shipping. No issues.
Maxine2022-03-17 18:42:18
Customer service staff and sales man are very patience and they all good at English, product's arrival is also very timely, a good supplier.
Daisy2022-02-13 18:29:07
High production efficiency and good product quality, fast delivery and completed after-sale protection, a right choice, a best choice.
Arthur2022-01-13 08:21:45
I have been using this company for years. Good coverage and great services too.
Eve2021-12-22 13:13:00
We always believe that the details decides the company's product quality, in this respect, the company conform our requirements and the goods are meet our expectations.
yemma2021-11-19 06:19:37
everything I wanted
Daisy2021-02-06 12:55:13
Couldn’t recommend this more
Paula2021-01-25 10:09:15
The accounts manager made a detailed introduction about the product, so that we have a comprehensive understanding of the product, and ultimately we decided to cooperate.
