Square and Rectangular Steel Tubes (HSS) Manufacturer in China
Sino East Steel Group manufactures cold-formed and hot-finished square and rectangular structural hollow sections (HSS) in black, oiled, painted, and hot-dip galvanized finishes for steel structures, curtain walls, machinery framing, and solar tracker supports.
Real Production, Warehouse & Seaworthy Export Packaging
Why Procure Direct from Sino East Steel Group
💰 Direct Mill Pricing
Eliminate intermediate trading markups with transparent factory FOB/CIF pricing and flexible payment terms for volume contracts.
🛡️ Certified EN 10204 3.1 MTC
Full heat-number traceability, guaranteed mechanical/chemical tolerances, and complete third-party inspection (SGS/BV) compliance.
🚢 1x20GP Mixed Cargo Support
Consolidate various sizes, specifications, and hardware fasteners into single 25-ton container loads to minimize inventory overhead.
Manufacturing Specifications & Technical Range
| Standard & Grades | ASTM A500 (Gr.A/B/C/D), EN 10219 (S235JRH, S275J0H, S355J2H), JIS G3466 |
|---|---|
| Dimensions | Square: 20x20mm – 500x500mm | Rectangular: 20x40mm – 400x600mm |
| Wall Thickness | 1.2mm – 20.0mm | Length: 5.8m, 6.0m, 11.8m, 12.0m |
| Finishes | Black Bare, Anti-Rust Varnished, Pre-Galvanized (Z60-Z120), Hot-Dip Galvanized (Z200-Z500) |
Ready to Procure Direct from Tianjin Steel Manufacturer?
Contact our senior sales engineers with your required size, grade, and destination port. We provide official CIF quotations and MTC samples within 15 minutes.