H-Beams & Built-up Members
Built-up members are welded from plate when rolled sections are too small or not available: H-beams, box girders and heavy columns for buildings, canopies and plant structures.
We cut flange and web plates on CNC flame, laser and plasma machines, assemble them on our H-beam line and weld the main seams by submerged-arc welding. End plates and stiffeners are welded by GMAW.
Members are drilled on CNC drilling machines, blasted to Sa 2.5 and coated with epoxy zinc-rich primer and polyurethane topcoat.
| Products | Welded H-beams, box girders, built-up columns |
|---|---|
| Steel grades | Q235B, Q355B structural steel |
| Plate thickness | Up to 70 mm (CNC cutting) |
| Welding | SAW and GMAW, to qualified WPS/PQR |
| Surface preparation | Sa 2.5 blasting |
| Coating | Epoxy zinc-rich primer + polyurethane topcoat |
| Codes | GB 50017 (design), GB 50205 (fabrication) |
| Drilling | CNC plate drilling |
Sizes and ratings are confirmed against your data sheet.
- Industrial buildings and workshop frames
- Fuel station canopies
- Pipe racks and equipment structures
- Platform and support frames
- Material verification of Q235B and Q355B plate and sections against mill test reports.
- CNC laser, flame or plasma cutting of plate up to 70 mm; CNC drilling and edge bevelling.
- Assembly and welding by SAW and GMAW to qualified WPS/PQR.
- Weld inspection by UT, MT and PT to the extent specified.
- Dimensional check against the drawings.
- Sa 2.5 blasting on a CNC shot-blasting machine, then epoxy zinc-rich primer and polyurethane topcoat.
- Marking, packing and loading with overhead cranes up to 50 t.
- Documents supplied: certificate of conformity, quality certificate, as-built drawings, MTRs, WPS/PQR welding records, NDT reports and packing list.
What is the maximum plate thickness you can cut?
70 mm, on CNC flame, laser and plasma cutting machines.
Which welding processes are used?
Submerged-arc welding for the main flange-to-web seams and GMAW for end plates, stiffeners and fittings, both to qualified WPS/PQR.
How are welding procedures, welder qualifications and records controlled?
Welding follows qualified WPS/PQR, welds are inspected by UT, MT and PT to the extent specified, and the records are supplied with the members.
Can you supply members only, without erection?
Yes. We supply fabricated and coated members for others to erect, or include erection on station projects.
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- Sales contact
- Mr. Yu Jiakang
- WhatsApp / WeChat
- +86 183 1791 9067
- Factory
- No. 2666 Jinxian Avenue, High-tech Industrial Park, Jinxian Economic Development Zone, Nanchang, Jiangxi, China 331700
Pressure vessels, storage tanks, SF double-wall tanks, steel structures and skid-mounted units, fabricated in Jinxian, Jiangxi since 2003.
Jiangxi Wanlong Industrial Co., Ltd.
No. 2666 Jinxian Avenue, High-tech Industrial Park, Jinxian Economic Development Zone, Nanchang, Jiangxi, China 331700
Contact
- Mr. Yu Jiakang
- WhatsApp +86 183 1791 9067
- jiakang@wanlongindustrial.com
