Welded Structural Steel Pipe
welded structural steel pipes engineered for heavy civil infrastructure, modular architectural framing, ocean piling foundations, tower cranes, and high-load mechanical equipment chassis. We guarantee exceptional load-bearing yield thresholds, precision geometric straightness, and uniform weld-line penetration structural integrity under our direct [2-Hour Rapid Quote] mill program.
Tired of slow supplier responses while your critical project bidding deadline closes in? Terrified of receiving sub-standard structural pipes that warp during heavy field welding, split along the longitudinal seam, or fail strict on-site construction safety inspections? Eliminate cross-border purchasing risks and secure your mill-verified testing logs immediately.
PRODUCT DETAILS
Welded Structural Pipe Three-Standard Cross Matrix
| American Structural Standard (ASTM) | European Structural Standard (EN) | Japanese / Chinese Standard (JIS/GB) | Process Type & Size Capability | Minimum Yield Threshold |
|---|---|---|---|---|
| ASTM A500 Grade B Structural | EN 10219 S235JRH | JIS G3444 STK400 / GB Q235B | ERW (21.3mm – 660mm) | ≥ 235 MPa (Standard Scaffolding/Frames) |
| ASTM A500 Grade C Heavy-Duty | EN 10210 / 10219 S355J2H | JIS G3444 STK500 / GB Q355B/D | LSAW / SSAW (Up to 1422mm) | ≥ 355 MPa (High-Load Infrastructure) |
| ASTM A252 Piling Structural | EN 10219 S275J2H Equivalent | JIS G3444 STK490 Equivalent | Heavy Wall Custom (XS/XXS) | Tailored for Ocean Foundation Piling |
Technical QA/QC Verification
• Unaltered Material MTC Logs: Consignments are delivered with genuine EN 10204 3.1 Mill Test Certificates directly tracing chemical carbon equivalent values (CEV), mechanical tensile strengths, yield boundaries, and charpy V-notch impact thresholds to verified steel ladle heats. Fully prepared for third-party auditing by SGS, BV, or TÜV.
• Capital Security Guarantee: We clear international transactional anxiety for civil infrastructure developers and global procurement firms by processing high-volume material orders under 100% Irrevocable Letters of Credit (L/C) at sight financial frameworks.
Internal Protection & Ocean Logistics
• Anti-Deformation Bundle Binding & Bulk Vessel Dunnage: Medium-bore sizes are strapped into tight hexagonal bundles with high-tensile steel banding lines and built-in fabric slings, while large-bore pipes are nested loose with heavy timber dunnage blocks. All cargo is cross-anchored inside marine vessels with industrial steel lashing wire setups to eliminate dynamic friction or cross-sectional flattening across sea routes.
• Complimentary Destination Port Demurrage: SXY Steel Group provides an automated allowance of 14 to 21 days of extended free container demurrage at your discharge port, giving your local logistics agents ample operational buffer time for customs clearance.
Product introduction
Welded Structural Steel Pipe
Pipe Type: Structural Pipe, Structural Welded Pipe, Welded Structural Pipe
Application: In the Structural Engineering Area and Construction Industry
Specification: OD: 88.9mm ~ 660mm
WT: 3mm ~ 17.5mm
LENGTH: 0.5mtr ~ 22mtr (5.8/6/11.8/12 meters, SRL, DRL)
Standard & Grades: ASTM A500 Grade 1/2/3, EN 10219
End: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
Surface: Bare, Lightly Oiled, Black/Red/Yellow Painting, Zinc/Anti-corrosive Coating
Packing: Bundled/In Bulk, Plastic Caps plugged, Waterproof Paper wrapped
Technical data
Chemical Composition
Chemical Composition
| Grade | C | Mn | P | S | Si | Cr | Mo |
|---|---|---|---|---|---|---|---|
| 1010 | 0.08-0.13 | 0.30-0.60 | ≤0.04 | ≤0.05 | – | – | – |
| 1020 | 0.08-0.23 | 0.30-0.60 | ≤0.04 | ≤0.05 | – | – | – |
| 1045 | 0.43-0.50 | 0.60-0.90 | ≤0.04 | ≤0.05 | – | – | – |
| 4130 | 0.28-0.33 | 0.40-0.60 | ≤0.04 | ≤0.05 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.75-1.00 | ≤0.04 | ≤0.05 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
Packing and shipping
Our company has passed ISO9001 quality management system certification, Our Mill product with CE/EN10204 / ASTM/Classification society certificate/CASO/BIS etc certificate.All the customers give good appreciation to our products.We are glad to be your good partner.
Application Areas
Steel is widely used in steel structure workshops, bridge frames, main structures of high-rise buildings, and infrastructure construction (such as highways, oil and gas pipelines). Its high strength properties ensure load-bearing stability and seismic performance. In ship manufacturing, steel is used to build hull structures, decks, and internal components. Hot-rolled coils rely on their load-bearing capacity to adapt to harsh environments.
Factory workshop
With a commitment to excellence, innovation, and sustainability, the company has established itself as a trusted partner in the international steel industry.After nearly two decades of relentless endeavour, our client base now spans over 110 countries and regions across Europe, the Middle East, South America, and Southeast Asia.
Free Civil Framework Layout Audit & Welded Structural Pipe Nesting Optimization Assessment
Managing technical procurement parameters for a commercial facility structural frame, high-load foundation piling matrix, staging layout drawing, or global infrastructure tender? Upload your cut-length distribution schedules, load requirements, thickness targets, or raw Bill of Materials (BOM) files below. SXY Steel Group’s technical engineering team will run a thorough nesting allocation study to minimize drop-off scrap margins and save your budget.
