Square Steel Tube
ERW Hollow Section · RHS / SHS
ISO 9001GB/T 6728ASTM A500MOQ: 1 Ton
OD Range
20×20 – 400×400 mm
Wall Thickness
0.8 – 20 mm
Length
5.8m / 6m / 12m
Material
Q195-Q355
Technical Specifications
| Product Name | Square Steel Tube (RHS / SHS) |
| Standards | GB/T 6728, ASTM A500, EN 10219 |
| Material | Q195, Q235B, Q355B, S235-S355 |
| Size Range | 20×20 mm – 400×400 mm |
| Wall Thickness | 0.8 mm – 20 mm |
| Length | 5.8m / 6m / 11.8m / 12m / Custom |
| Surface | Black / Oiled / Galvanized |
| End Finish | Plain End / Beveled End |
| Packaging | Bare bundle / Woven bag / As required |
Product Description
YouXinFa square steel tubes are produced using advanced ERW technology. Starting from high-quality hot-rolled steel coils, each tube undergoes continuous roll forming, high-frequency welding, online sizing, straightening, and NDT inspection to ensure superior dimensional accuracy and weld integrity.
Our factory in Tianjin operates multiple production lines. Every batch is traceable and tested to meet international standards before shipment.
Why Choose Us
🏭
Direct Factory
Own production base. No middlemen.
✅
Quality Assured
Full NDT inspection. ISO certified.
🚢
Export Ready
Seaworthy packing. Fast clearance.
Applications
- Steel structure buildings: columns, beams, trusses
- Machinery manufacturing: equipment frames, conveyor lines
- Automotive industry: chassis components, crash beams
- Agricultural facilities: greenhouse frames, fencing
- Infrastructure: guardrails, sign posts, solar panel mounts