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The Two Storey Steel Structure Building, specially designed for industrial and commercial use, adopts prefabricated Q355B steel components, shortens the construction period by 40%, and the floor load can reach 500kg/m, ensuring long-term stable operation,and provides bulk purchase.
Q355B steel
Main material
Level 8 fortification
Anti-seismic
≥ 50 years
Life
Using national standard Q355B hot rolled H-beam as the main frame, the yield strength ≥ 355MPa, compared with ordinary Q235 steel structure strength increased by 15%, while reducing the amount of steel by 10% to ensure large-span support capacity, the structure is more stable.
The second-floor floor system adopts galvanized profiled steel plate (floor bearing plate) combined with reinforced concrete cast-in-situ, and the standard live load is designed to be 3KN/m to 5KN/m, which perfectly meets the requirements of heavy machinery equipment placement or high-density office storage without tremor.
100% of all components are prefabricated and drilled and welded in the factory. Only high-strength bolts are required for connection on site, and there is no on-site welding operation. Compared with traditional concrete buildings, the construction efficiency is improved by 40%, and the main construction of 3000 square meters can be completed in an average of 60 days.
The surface of the component is treated by shot blasting (Sa2.5 grade), and two layers of epoxy zinc-rich primer are sprayed or hot-dip galvanized with a thickness of 85μm, which can effectively resist industrial acid and alkali corrosion and humid environment, and extend the maintenance period to more than 15 years.
The steel structure system has excellent ductility and is designed according to the seismic level 8 standard to effectively absorb seismic energy. The wind resistance is designed to reach 120 km/h(0.6KN/m²) to ensure structural integrity in typhoons or extreme climates.
Thanks to the characteristics of high-strength steel, the bottom layer can realize a large-span design without columns of 9-12 meters, and the utilization rate of the second floor space is as high as 95%, which is convenient for flexible division of production lines, warehouse areas or open office areas according to business needs.
| Parameter categories | Detailed specifications |
| Main Frame | Q355B / Q345B welded H-beams, shot blasted to Sa2.5 grade. |
| Secondary Frame | Q235B cold-formed C/Z-shaped steel purlins, galvanized layer thickness ≥275g/m² |
| Floor System | Galvanized decking + cast-in-place concrete + reinforcement |
| Roof & Wall Panel | 0.5mm/0.6mm color steel single panel or 50mm/75mm EPS/PU/rock wool sandwich panel |
| Floor Load | Standard: 300kg/m² – 500kg/m² (customizable up to 1000kg/m²) |
| Wind Load | 0.3 kN/m² – 0.8 kN/m² (Customized according to local climate standards) |
| Snow Load | 0.3KN/m² – 0.5KN/m² |
| Connection | 10.9 grade high-strength bolts |
| Doors & Windows | Industrial overhead doors/roller shutters; aluminum alloy/PVC windows |
Suitable for factories that need “lower production, upper office” or “lower storage, upper assembly” mode. The high-floor load-bearing design meets the installation of heavy machinery, and the double-layer structure maximizes the use of limited industrial land area.
For commercial or industrial projects with tight deadlines, standardized connection nodes and prefabricated components can significantly reduce the number of on-site workers and management difficulties, ensuring high-quality delivery of the project within the contractual period or even ahead of schedule.
Applicable to the construction of multi-layer transit warehouse. The large-span design facilitates the free passage of forklifts and AGV trolleys on the bottom floor, and the second floor can be used as a value-added service area or a light cargo storage area to improve the storage capacity rate per unit area.
For mining office buildings or large camps where concrete transportation is difficult due to remote geographical location, steel structure components are convenient for long-distance transportation of containers, and there is no need for a large amount of water operation on site, which is an ideal rapid construction scheme.
The anchor bolts shall be accurately embedded according to the drawings, and the error shall be controlled within ± 2mm. After the concrete foundation reaches 75% of the design strength, the steel column lifting operation can be carried out.
Hoist the first layer of steel column, the second layer of steel beam and floor beam in turn. Correct the verticality with theodolite to ensure that the column top offset is less than H/1000, and then tighten all 10.9 grade high strength bolts.
Galvanized floor bearing plate is laid on the floor beam and stud welding is carried out, and then roof purlin, wall purlin and corner support system are installed to form a stable network stress system.
Installation of roof panels and wall panels, do a good job of waterproof node treatment. Finally, steel bar binding and concrete pouring on the second floor are carried out. After curing, doors and windows can be installed and interior decoration can be carried out.
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The Two Storey Steel Structure Building, specially designed for industrial and commercial use, adopts prefabricated Q355B steel components, shortens the construction period by 40%, and the floor load can reach 500kg/m, ensuring long-term stable operation,and provides bulk purchase.
Main material
Q355B steel
Anti-seismic
Level 8 fortification
Life
≥ 50 years
Using national standard Q355B hot rolled H-beam as the main frame, the yield strength ≥ 355MPa, compared with ordinary Q235 steel structure strength increased by 15%, while reducing the amount of steel by 10% to ensure large-span support capacity, the structure is more stable.
The second-floor floor system adopts galvanized profiled steel plate (floor bearing plate) combined with reinforced concrete cast-in-situ, and the standard live load is designed to be 3KN/m to 5KN/m, which perfectly meets the requirements of heavy machinery equipment placement or high-density office storage without tremor.
100% of all components are prefabricated and drilled and welded in the factory. Only high-strength bolts are required for connection on site, and there is no on-site welding operation. Compared with traditional concrete buildings, the construction efficiency is improved by 40%, and the main construction of 3000 square meters can be completed in an average of 60 days.
The surface of the component is treated by shot blasting (Sa2.5 grade), and two layers of epoxy zinc-rich primer are sprayed or hot-dip galvanized with a thickness of 85μm, which can effectively resist industrial acid and alkali corrosion and humid environment, and extend the maintenance period to more than 15 years.
The steel structure system has excellent ductility and is designed according to the seismic level 8 standard to effectively absorb seismic energy. The wind resistance is designed to reach 120 km/h(0.6KN/m²) to ensure structural integrity in typhoons or extreme climates.
Thanks to the characteristics of high-strength steel, the bottom layer can realize a large-span design without columns of 9-12 meters, and the utilization rate of the second floor space is as high as 95%, which is convenient for flexible division of production lines, warehouse areas or open office areas according to business needs.
| Parameter categories | Detailed specifications |
| Main Frame | Q355B / Q345B welded H-beams, shot blasted to Sa2.5 grade. |
| Secondary Frame | Q235B cold-formed C/Z-shaped steel purlins, galvanized layer thickness ≥275g/m² |
| Floor System | Galvanized decking + cast-in-place concrete + reinforcement |
| Roof & Wall Panel | 0.5mm/0.6mm color steel single panel or 50mm/75mm EPS/PU/rock wool sandwich panel |
| Floor Load | Standard: 300kg/m² – 500kg/m² (customizable up to 1000kg/m²) |
| Wind Load | 0.3 kN/m² – 0.8 kN/m² (Customized according to local climate standards) |
| Snow Load | 0.3KN/m² – 0.5KN/m² |
| Connection | 10.9 grade high-strength bolts |
| Doors & Windows | Industrial overhead doors/roller shutters; aluminum alloy/PVC windows |
Suitable for factories that need “lower production, upper office” or “lower storage, upper assembly” mode. The high-floor load-bearing design meets the installation of heavy machinery, and the double-layer structure maximizes the use of limited industrial land area.
For commercial or industrial projects with tight deadlines, standardized connection nodes and prefabricated components can significantly reduce the number of on-site workers and management difficulties, ensuring high-quality delivery of the project within the contractual period or even ahead of schedule.
Applicable to the construction of multi-layer transit warehouse. The large-span design facilitates the free passage of forklifts and AGV trolleys on the bottom floor, and the second floor can be used as a value-added service area or a light cargo storage area to improve the storage capacity rate per unit area.
For mining office buildings or large camps where concrete transportation is difficult due to remote geographical location, steel structure components are convenient for long-distance transportation of containers, and there is no need for a large amount of water operation on site, which is an ideal rapid construction scheme.
The anchor bolts shall be accurately embedded according to the drawings, and the error shall be controlled within ± 2mm. After the concrete foundation reaches 75% of the design strength, the steel column lifting operation can be carried out.
Hoist the first layer of steel column, the second layer of steel beam and floor beam in turn. Correct the verticality with theodolite to ensure that the column top offset is less than H/1000, and then tighten all 10.9 grade high strength bolts.
Galvanized floor bearing plate is laid on the floor beam and stud welding is carried out, and then roof purlin, wall purlin and corner support system are installed to form a stable network stress system.
Installation of roof panels and wall panels, do a good job of waterproof node treatment. Finally, steel bar binding and concrete pouring on the second floor are carried out. After curing, doors and windows can be installed and interior decoration can be carried out.
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