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[China]
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Address: Tieshan Industrial zone, Huangdao District, Qingdao City.
Contact name:steven
Qingdao Ruly Steel Engineering Co.,Ltd |
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Building Construction Material Structural Steel / Box Steel Column Beams Fabrication
Box-shaped column is welded by four steel plates, and the manufacturing process is basically the same as that of the welded H-shaped steel. Welded steel box beam and box column is widly used in the steel structure proejct. Compared with H-shaped steel column has only one strong axis, box column is a strong axis in the X and Y directions, and a stiffening plate at the node, a strong node domain is formed, and the force condition is superior to that of the rolled H-beam. We could fabricate it in many ways or as your request. Here we will show you one of the fabriation method.
1. Firstly, the above cover plate is used as the assembly reference, and the partition plate and the side web assembly line are respectively released on the assembly surface according to the construction drawing requirements, and the sample punching mark is used.
2. First assemble the upper cover and the partition, and assemble them on the tire mold. After assembly, the welding must be completed before proceeding to the next process.
3. Before the web is assembled, the flatness of the web must be checked. When assembling, the assembly should be assembled in one direction. First, the middle stiffener is positioned, and then the web is positioned.
4. The whole assembly of the box structure is completed after the U-shaped structure is completed. First, the edge of the U-shaped structure web is corrected to make the unevenness <L/1000, and then the web assembly positioning line is released on the lower cover, and the U-shaped is inverted. Structural assembly, using one direction assembly, positioning spot welding using symmetric welding method.
5. The last side of the separator is welded by electroslag pressure welding, and electroslag pressure welding is used for special equipment.
Remarks: It can be processed according to the drawings and can meet the processes of shot blasting, punching, stiffening (joining board), painting and so on;
We have three steel structure production lines, equipped the flame
cutting machine, H-Section steel assembly machine, gantry welding
machine and shot-blasting machine, paint spray booth. We also put
apart the space for the fabrication of heavy-duty and large
structure steel components in our workshop.
| Products Name | Building Construction Material Structural Steel / Box Steel Column Beams Fabrication |
| Grade | Q235B,SS400,Q345B,S235JR,S275JR,ASTM-A36 |
| Size | 100x100mm-1500x1500mm |
| Thickness | 8mm-100mm |
| Length | 2-20meters |
| Shape | Box shaped |
| Delivery Time | 7-15 Days if in stock size, or it will be 20-40 for customized |
| Payment Term | L/C or T/T |
| Package | By bundle or as customer's requirement |
| Application | Engineering or project, plant and equipment, mechanical equipment, bridge, etc |
| Surface | Black, coating, galavnized |
| MOQ | 30Ton |
1. Structural steel fabrication, painting , galvanizing ,
pre-assembly
2. Designing, fabrication and installation for Prefabricated
steel structure building.
3. Deepen or design the fabrication drawing or shop drawing
based on your architectural drawing and construction drawing
4. Engineering consulting service
QC/Technical Support
Raw material quality control
Thickness tolerance <0.25mm
Yield and tension strength testing in-house
Third party inspection certificate
Supply traceable mill certificate
Structural steel fabrication quality control
100% testing dimension tolerance <1mm
20% sample welding line ultrasonic testing, no fault, full
penetration.
20% magnetic powder testing, no bubble, no defect, Smooth and Full
Supply third-party inspection assistance.
Shot blasting and painting quality control
Shot blasting grade Sa. 2.5 Metal luster, no rust, no oil dirt, no
welding spatter, Roughness >75um
Paint primer within 5 hours after shot blasting, Holiday-free
coatings, smooth, No dust, Dry Film Thickness (DFT) >75UM
Pre-assembly testing the connection details.
1. Professional design team, we could design the drawing as
your requirement or calculate the steel quantity based on your
drawing.
2. Skilled fabrication team and advanced equipment. We
make the independent production schedule to each project.
3. One-stop service: We have completed lots such kinds of
projects, we could provide the integrated proposal for your
project.
4. Professional QC team will guarantee that we will provide
the production and service as your request.
5. After sales service: If it has any questions that need us
to do in your process of using, such as the maintain of outside
insulation and steel components, just tell us , we will try to
provide the service as well as we can.
