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.

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.

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.