Welded Carbon Steel Pipe (ERW / SSAW / LSAW Welded Steel Tubes)
Prime Mill Grade | Certified China Exporter & Factory Direct Supply
Welded Carbon Steel Pipe (ERW / SSAW / LSAW Welded Steel Tubes) - Technical Overview & Specifications
Welded Carbon Steel Pipe encompasses a comprehensive spectrum of longitudinal and spiral welded steel pipes engineered for fluid transmission, structural engineering, and piling applications. Ironex operates high-precision High-Frequency Electric Resistance Welded (ERW) lines, Longitudinal Submerged Arc Welded (LSAW) mills, and Spiral Submerged Arc Welded (SSAW) plants. Manufactured from prime hot rolled carbon steel coil and heavy plate, our welded steel pipes feature uniform weld seam metallurgy, high roundness, and strict hydrostatic compliance. We support worldwide export shipping with custom coating (3LPE, FBE, Galvanized) and MTC certificates.
Due to daily market movements in raw material costs and exchange rates, prime steel products are quoted on a spot basis rather than fixed prices. We provide transparent wholesale pricing with tier-based volume discounts (FCL / Bulk). Contact our export sales engineering team to receive today's official FOB / CIF quotation and MTC certificate.
Product Parameters
| Product Name | Welded Carbon Steel Pipe (ERW / SSAW / LSAW) |
| Welding Types | High Frequency ERW, Spiral Submerged Arc SSAW, Longitudinal LSAW |
| Standard Specifications | API 5L (PSL1/PSL2), ASTM A53 Grade A/B, ASTM A252, EN 10219, GB/T 9711 |
| Outer Diameter Range | ERW: 21.3mm - 610mm | SSAW: 219mm - 3556mm | LSAW: 406mm - 1524mm |
| Wall Thickness Range | 1.65mm - 50mm (SCH 10, SCH 20, SCH 40, SCH 80, STD, XS) |
| Weld Seam Quality | 100% online eddy current & radiographic/ultrasonic testing (RT/UT) |
| Hydrostatic Pressure | 100% hydraulic tested up to 25 MPa without leakage |
| Anti-Corrosion Options | 3LPE (Three-layer Polyethylene), FBE (Fusion Bonded Epoxy), Hot-Dip Galvanized, Black Bitumen |
Chemical Composition
| Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) |
|---|---|---|---|---|---|
| API 5L Gr. B / A53B | ≤ 0.26 | ≤ 1.20 | ≤ 0.030 | ≤ 0.030 | ≤ 0.40 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| Grade B / Q235B | ≥ 245 | ≥ 415 | ≥ 23 |
Product Features & Advantages
- Cost-effective solution for high-volume cross-country pipeline and municipal infrastructure
- High dimensional roundness, tight diameter tolerances, and superior straightness
- Wide diameter availability up to 3556mm (140 inches) for piling and offshore foundations
- Factory direct manufacturer supply with ISO 9001, CE, and API monogram compliance
Applications & Industries
Customer Reviews & Mill Quality Audits
Overall Satisfaction from Global EPC & Steel Buyers
EN 10204 3.1 Chemical & Tensile Verification Passed
SGS, BV & Cotecna Third-Party Audits Supported
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