SHANDONG SHOUYA STEEL CO., LTD.
| Delivery Time | 15-30 days |
| Payment Terms | T/T |
| Name | Welded Steel Pipe |
| Packaging Details | bundled with steel strips or as requirments |
| Supply Ability | 50,0000 tons per year |
| Model Number | Q235B Q355B S235JR |
| Brand Name | Shouya |
| Certification | CE, EN |
| Place of Origin | China |
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Product Specification
| Delivery Time | 15-30 days | Payment Terms | T/T |
| Name | Welded Steel Pipe | Packaging Details | bundled with steel strips or as requirments |
| Supply Ability | 50,0000 tons per year | Model Number | Q235B Q355B S235JR |
| Brand Name | Shouya | Certification | CE, EN |
| Place of Origin | China | ||
| High Light | Square Welded Steel Pipe ，SHS Hollow Section Pipe ，ERW Square Tube Q235B | ||
Square Welded Steel Pipe | ERW SHS Hollow Section | Q235B Q355B S235JR | 20x20–400x400mm | For Construction & Structure
ERW Square Welded Steel Pipe | SHS Hollow Section | Q235B Q355B S235JR | 20*20–400*400mm | For Construction & Structure
Our Square Welded Steel Pipe is manufactured using high-frequency Electric Resistance Welding (ERW) technology from hot-rolled steel coils, delivering a uniform, high-strength weld with excellent dimensional accuracy and a smooth surface finish. Available as Square Hollow Sections (SHS) in sizes from 20*20mm to 400*400mm, these structural tubes are engineered for construction frameworks, steel structures, machinery, and general fabrication applications.
| Item | Range |
|---|---|
| Size (Square) | 20*20mm – 400*400mm |
| Wall Thickness | 1.0mm – 16mm (custom thicknesses available) |
| Length | 6m, 12m, or customized (2m–12m) |
| Material Grades | Q235B, Q355B, S235JR (also available: SS400, Q195) |
| Standard | GB/T 6728, EN10219, ASTM A500 |
| Surface | Black, oiled, painted, or galvanized |
| Ends | Plain end, square cut |
| Property | Q235B / S235JR | Q355B |
|---|---|---|
| Minimum Yield Strength | 235 MPa | 355 MPa |
| Tensile Strength | 370–500 MPa | 470–630 MPa |
| Elongation (min) | 26% | 22% |
| Impact Test | +20°C, 27J min | +20°C, 27J min |
| Best For | General construction, fencing, greenhouse frames | Load-bearing structures, machinery frames, heavy fabrication |
ERW Manufacturing Process — High-frequency electric resistance welding creates a strong, uniform weld seam without filler material. The external weld flash is removed for a smooth, consistent finish.
Tight Dimensional Accuracy — The cold-forming process ensures precise outer dimensions, straightness, and wall thickness tolerances, making these tubes ideal for fabrication and welding.
Smooth Internal Surface — Low friction and efficient flow make ERW square tubes suitable for both structural and fluid conveyance applications.
Structural Strength — The square hollow section profile provides high resistance against bending and torsion, with excellent load-bearing capacity for structural frameworks.
Weldable & Fabrication-Ready — Q235B and Q355B are standard weldable structural steels suitable for MIG/MAG, submerged arc, and manual metal arc welding.
Steel Structures — Building frames, roof trusses, support columns
Construction — Scaffolding, formwork, temporary structures
Fencing & Gates — Security fences, gate frames, guardrails
Greenhouse Frames — Agricultural and horticultural structures
Machinery — Equipment frames, bases, and support structures
General Fabrication — Furniture, shelving, display stands
Factory Direct Supply — Competitive pricing with full traceability
Bulk Stock Available — Fast delivery for standard sizes in Q235B and Q355B
Custom Fabrication — Cut-to-length, drilling, bending, and end finishing services
Export-Ready Packaging — Bundled with steel strips, 20GP/40GP container or bulk vessel loading
Packing: Bundled with steel strips or as per customer requirement
Loading: 20GP / 40GP container or bulk vessel
Lead Time: 7–25 days depending on quantity and specification
Company Details
Business Type:
Manufacturer,Agent,Exporter,Trading Company
Year Established:
2009
Total Annual:
200000000-230000000
Employee Number:
150~170
Ecer Certification：
Verified Supplier
Shandong Shouya Steel Co., Ltd. Welcome to Shandong Shouya Steel Co., Ltd., a professional steel foreign trade and steel solution provider based in Shandong, China. Founded in 2009, we leverage Shandong’s steel industrial cluster advantages and boast more than ten years of experience in... Shandong Shouya Steel Co., Ltd. Welcome to Shandong Shouya Steel Co., Ltd., a professional steel foreign trade and steel solution provider based in Shandong, China. Founded in 2009, we leverage Shandong’s steel industrial cluster advantages and boast more than ten years of experience in...
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