Welded H Beam Fabrication
Welded H Beam Columns and Steel Frame Members in Q355B
Built up H sections welded by submerged arc, drilled to your bolt layout, piece marked and delivered ready to erect.
Q355B / S355JR · Submerged arc welded · EN 1090 / AWS D1.1 · Drilled and marked
Product Overview
A welded H beam is built up from three steel plates joined by continuous submerged arc welding. The result is a section with a straight web, parallel flanges and a smooth weld bead, and because it is welded rather than rolled, the web height, flange width and plate thickness can follow your drawing exactly, including tapered and variable depth members.
We use Q355B as the standard grade. It is a low alloy high strength steel with a minimum yield strength of 355 MPa, roughly 40 percent higher than Q235B, so a lighter member carries the same load and the frame, the foundation and the freight cost all go down. Other grades such as Q235B, Q345B, S355JR, S355J2, ASTM A36 and A572 Gr.50 are available on request.
Each member leaves the workshop ready to bolt. Holes are CNC drilled to your bolt layout, copes and notches are cut, base plates, end plates, gusset plates and stiffeners are welded on, and every piece carries a mark that matches the erection drawing. Surface protection is either shot blasting with primer and top coat, or hot dip galvanizing between 65 and 200 microns for outdoor and coastal sites.
Most of our welded H beams go into workshop and warehouse portal frames, mezzanine floors, crane runway girders, roof trusses, equipment support frames and prefabricated steel buildings.
Why Customers Choose It
Exact size, no compromise. A welded section follows your drawing, so you avoid oversized standard beams, wasted steel and last minute site modifications.
Higher strength per ton. Q355B at 355 MPa yield means a smaller section can do the same job, which cuts steel weight, transport volume and foundation load at the same time.
Fits on site first time. CNC drilling and piece marking matched to the erection drawing mean the site team bolts the frame together without reaming holes or reworking connections.
Weld quality you can verify. Main seams are welded by submerged arc, welders are certified to EN ISO 9606, and UT or MT can be arranged whenever your specification asks for it.
Complete documentation. Mill test certificate, welding procedure, welder certificate, galvanizing report and packing list travel with the goods, which keeps customs clearance and client approval simple.
Specifications
| Steel grade |
Q355B as standard, also Q235B, Q345B, S355JR, S355J2, ASTM A36, A572 Gr.50 |
| Section size |
Web height 200 to 1200 mm, flange width 100 to 500 mm, plate thickness 6 to 40 mm, length up to 12 m |
| Welding |
Submerged arc welding for main seams, CO2 or manual arc for details, to AWS D1.1, EN 1090-2 and GB 50661 |
| Fabrication |
CNC cutting, drilling, cope and notch, camber, end milling, base and end plates, stiffeners, shear studs |
| Surface treatment |
Shot blasting Sa2.5 with primer and top coat, or hot dip galvanized 65 to 200 microns to ASTM A123 and EN ISO 1461 |
| Tolerance |
EN 1090-2 and ASTM A6, straightness within L/1000 |
| Inspection |
Weld and dimensional check, UT or MT on request, mill test certificate 3.1, SGS or BV inspection |
| Packing |
Bundled by piece mark with steel straps, plastic film and plywood protection, loading plan for containers or break bulk |
Fabrication Scope
Send a drawing, a BIM model or a member list, and our engineers return a marked up quotation within two working days. The scope normally covers plate cutting and edge preparation, H beam assembly and submerged arc welding, straightening, CNC drilling and slotting, end milling, camber and splice preparation, then fit up of base plates, end plates, gussets, stiffeners and shear studs. Trial assembly can be arranged for complex frames.
Finishing is either shot blasting with primer and top coat in your RAL color, or hot dip galvanizing, or a duplex system of both. Members are bundled by piece mark, protected at contact points and loaded according to a loading plan issued for your approval, and delivery is normally 15 to 25 days after deposit and drawing confirmation.
Documentation includes the piece mark list, packing list, mill test certificate 3.1, welding procedure and welder certificate, galvanizing thickness report and the erection drawing, so your site team and your client both have everything they need in one package.
About Our Company
Hangzhou FAMOUS Steel Engineering Co., Ltd. is a steel structure group established in 2000, working as manufacturer, fabricator and exporter. With 1200 to 1300 employees and a fabrication capacity of about 8000 metric tons per month, we deliver steelworks, facades and building materials to projects in more than 60 countries across Europe, North America, South America, the Middle East, Africa and Southeast Asia.
We hold ISO 9001 and CE marked fabrication to EN 1090, and our welders are certified to EN ISO 9606. Design, welding, galvanizing, packing and shipping are handled by one team, so there is no gap between suppliers and no waiting time between processes.
Send your welded H beam drawings today
Our engineers confirm the section, the welding standard and the delivery schedule, then return a quotation.
Contact us for a quotation
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