Overview
Built-up members are made from web and flange plates cut from steel plate, fitted and joined with submerged-arc welding. Engineers can choose each plate thickness and taper the depth to follow the moment diagram, which saves steel compared with a rolled section on the same span.
Quality depends on the welding procedure, qualified welders, straightening after welding and non-destructive testing (UT, MT). The World Steel factory fabricates built-up members to AWS D1.1, EN 1090-2 and AS/NZS 5131.
Uses
- 01Long-span pre-engineered building frames
- 02Tapered columns and rafters
- 03Heavy crane girders
- 04Transfer beams and process platform girders
Selection and acceptance checks
- Check the welding procedures (WPS/PQR) and welder qualifications
- Inspect welds visually and by UT/MT at the rate in the specification
- Measure flange squareness, camber and depth after straightening
Reference standards
- AWS D1.1
- EN 1090-2
- AISC 360
- JIS G 3106 (SM490)
For reference only. The standards for each project follow its design documents, current Vietnamese codes and the investor’s requirements.
Reference brands
POSCOKorean steelmaker producing plate, coil and structural sections.- Nippon Steel Nippon SteelJapanese steelmaker producing plate, sections, pipe and weathering steel.
Brands are listed for reference; World Steel selects suppliers according to each project’s specification.
Sectors and solutions
Sectors
FDI factories Logistics and cold storage High-rise buildings Energy
