Structural Steel Pipe
structural steel pipes engineered for high-load civil engineering, heavy infrastructure scaffolding, architectural frameworks, marine piling, and machinery chassis fabrication. We guarantee exceptional load-bearing yield thresholds, precision dimensional straightness, and strict wall thickness uniformity 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, crack under load, or fail strict on-site building inspections? Eliminate cross-border purchasing risks and secure your mill-verified testing logs immediately.
PRODUCT DETAILS
Structural Steel Pipe Three-Standard Cross Matrix
| American Structural Standard (ASTM) | European Structural Standard (EN) | Japanese / Chinese Standard (JIS/GB) | Outside Diameter & Wall Range | Minimum Yield Strength |
|---|---|---|---|---|
| ASTM A500 Grade B Structural | EN 10219 S235JRH | JIS G3444 STK400 / GB Q235B | OD: 21.3mm – 610mm | ≥ 235 MPa (Standard Scaffolding) |
| ASTM A500 Grade C Heavy-Duty | EN 10210 / 10219 S355J2H | JIS G3444 STK500 / GB Q355B/D | OD: Up to 1220mm Large Bore | ≥ 355 MPa (High-Load Infrastructure) |
| ASTM A252 Piling Pipe (Gr. 2/3) | EN 10219 S275J2H Equivalent | JIS G3444 STK490 Equivalent | Custom Heavy Wall (XS/XXS) | Tailored for Foundation Driving |
Technical QA/QC Verification
• Unaltered Material MTC Logs: Shipments are delivered with genuine EN 10204 3.1 Mill Test Certificates directly tracing the chemical boundaries, elongation ratios, and charpy V-notch impact thresholds to verified steel ladle heats. Fully prepared for third-party project audits by SGS, BV, or TÜV.
• Capital Security Guarantee: We eliminate cross-border financial risks 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
• Rigid Hexagonal Stacking & Multi-Point Maritime Lashing: Small-to-medium pipes are bound into compact bundles using high-tensile steel banding lines and nylon lifting lifting loops, 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 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.
In general, structural pipe is a type of steel construction pipe that meets certain standards of chemical composition and mechanical properties. This pipe can be used for a wide variety of structural applications and there are variety of types of structural pipe available. Common types of structural pipe include:Seamless Steel Pipe: Seamless steel structural pipe is a durable pipe product that is commonly used for dock piling, pipe piling, caissons, and bollards.ERW Steel Pipe: This structural pipe is typically known to the construction industry as high quality line pipe and it is commonly used by the oil and utility companies. This steel pipe can be used for sign pole, column, dock, and tunnel construction.Spiral Steel Pipe: This is an economical and durable type of structural pipe that offers long lasting durability for things like road casing, piling and trenches.DSAW Carbon Steel Pipe: This structural pipe is welded on both the OD and the ID. It is available in many different grades and is used for road casing, road boring, culverts, and more.Fence Pipe: This is a type of structural pipe that is becoming popular for building fences because of its high durability and strength. This structural pipe is used for enclosing parks, parking lots, and more.Culvert Pipe: This type of pipe is not necessary a high quality or extremely durable structural pipe, but rather a construction pipe used for diverting water under and around driveways, water and sewer systems, drainage systems, and temporary bridges.
Application: In Structural Engineering and Construction Industry
Specification: OD: 1/8” ~ 26” (10.3 ~ 660mm)
WT: SCH 10 ~ 160, SCH STD, SCH XS, SCH XXS
LENGTH: Fixed Length (5.8/6/11.8/12mtr), SRL, DRL
Standard: ASTM A53/A252/A500/A501, JIS G3444, EN 10210/10219
Ends: 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
Detail Specification of Structural Steel Pipe
| DN | OD (mm) | SCH40 WT (mm) | SCH40 WT (mm) | SCH40 WT (mm) |
|---|---|---|---|---|
| 1/4″ | 13.7 | 2.24 | 3.02 | / |
| 3/8″ | 17.1 | 2.31 | 3.2 | / |
| 1/2″ | 21.3 | 2.77 | 3.73 | 4.78 |
| 3/4″ | 26.7 | 2.87 | 3.91 | 5.56 |
| 1″ | 33.4 | 3.38 | 4.55 | 6.35 |
| 1-1/4″ | 42.2 | 3.56 | 4.85 | 6.35 |
| 1-1/2″ | 48.3 | 3.68 | 5.08 | 7.14 |
| 2″ | 60.3 | 3.91 | 5.54 | 8.74 |
| 2-1/2″ | 73 | 5.16 | 7.01 | 9.53 |
| 3″ | 88.9 | 5.49 | 7.62 | 11.13 |
| 3-1/2″ | 101.6 | 5.74 | 8.08 | / |
| 4″ | 114.3 | 6.02 | 8.56 | 13.49 |
| 5″ | 141.3 | 6.55 | 9.53 | 15.88 |
| 6″ | 168.3 | 7.11 | 10.97 | 18.26 |
| 8″ | 219.1 | 8.18 | 12.7 | 23.01 |
| 10″ | 273 | 9.27 | 15.09 | 28.58 |
| 12″ | 323.8 | 10.31 | 17.48 | 33.32 |
| 14″ | 355.6 | 9.53 | 11.13 | 19.05 |
| 16″ | 406.4 | 9.53 | 12.7 | 21.44 |
| 18″ | 457 | 9.53 | 14.27 | 23.83 |
| 20″ | 508 | 9.53 | 15.09 | 26.19 |
| 24″ | 610 | 9.53 | 17.48 | 30.96 |
Technical data
Structural Steel Pipe Chemical Composition and Mechanical Properties
| Standard | Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Tensile Strength (Mpa) | Yield Strength (Mpa) |
|---|---|---|---|---|---|---|---|---|
| ASTM A53 | A | ≤0.25 | – | ≤0.95 | ≤0.05 | ≤0.06 | ≥330 | ≥205 |
| B | ≤0.30 | – | ≤1.2 | ≤0.05 | ≤0.06 | ≥415 | ≥240 | |
| ASTM A106 | A | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥415 | ≥240 |
| B | ≤0.35 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥485 | ≥275 | |
| ASTM A179 | A179 | 0.06-0.18 | – | 0.27-0.63 | ≤0.035 | ≤0.035 | ≥325 | ≥180 |
| ASTM A192 | A192 | 0.06-0.18 | ≤0.25 | 0.27-0.63 | ≤0.035 | ≤0.035 | ≥325 | ≥180 |
| API 5L PSL1 | A | 0.22 | – | 0.90 | 0.030 | 0.030 | ≥331 | ≥207 |
| B | 0.28 | – | 1.20 | 0.030 | 0.030 | ≥414 | ≥241 | |
| X42 | 0.28 | – | 1.30 | 0.030 | 0.030 | ≥414 | ≥290 | |
| X46 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥434 | ≥317 | |
| X52 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥455 | ≥359 | |
| X56 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥490 | ≥386 | |
| X60 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥517 | ≥448 | |
| X65 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥531 | ≥448 | |
| – | X70 | 0.28 | – | 1.40 | 0.030 | 0.030 | ≥565 | ≥483 |
| API 5L PSL2 | B | 0.24 | – | 1.20 | 0.025 | 0.015 | ≥414 | ≥241 |
| X42 | 0.24 | – | 1.30 | 0.025 | 0.015 | ≥414 | ≥290 | |
| X46 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥434 | ≥317 | |
| X52 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥455 | ≥359 | |
| X56 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥490 | ≥386 | |
| X60 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥517 | ≥414 | |
| X65 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥531 | ≥448 | |
| X70 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥565 | ≥483 | |
| X80 | 0.24 | – | 1.40 | 0.025 | 0.015 | ≥621 | ≥552 |
Structural Steel Pipe Chemical Composition and Mechanical Properties
| Standard | Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Cu (%) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GB/T 8163 | 10 | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.25 | ≤0.25 | 335-457 | ≥205 | ≥24 |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 | 410-550 | ≥245 | ≥20 | |
| Q345 | 0.12-0.20 | 0.20-0.55 | 1.20-1.60 | ≤0.045 | ≤0.045 | – | – | – | 490-665 | ≥325 | ≥21 |
Structural Steel Pipe Tolerance
| Pipe types | Parameter | Pipe Size (mm) | Tolerances |
|---|---|---|---|
| Hot rolled | OD | All | ±1% (min ±0.50mm) |
| WT | All | +15%, -12.5% | |
| Cold drawn | OD | 6~10 | ±0.20mm |
| 10~30 | ±0.40mm | ||
| 30~50 | ±0.45mm | ||
| >50 | ±1% | ||
| WT | ≤1 | ±0.15mm | |
| >1~3 | +15% -10% | ||
| >3 | +12.5% -10% |
Structural Steel Pipe End
| End Type | Application |
|---|---|
| Plain End | Wall Thickness less than 0.5 inch, including SCH STD & SCH XS |
| Plain End (Square Cut) | Wall Thickness over 0.5 inch, including SCH XXS |
| Beveled End | Wall Thickness less than 0.5 inch, including SCH STD & SCH XS |
| Couplings | Outside Diameter equal or less than 2″ |
| Thread Protection | Outside Diameter over 4 inch |
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 & 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.
