Spiral Submerged Arc Welded Pipe SSAW

Spiral Submerged Arc Welded (SSAW) pipes are ‌cold-formed steel tubes‌ manufactured by helically welding hot-rolled steel strips at ‌60–85° forming angles‌. Designed for high-pressure fluid transmission, these pipes achieve ‌API 5L X70-grade tensile strength (570 MPa)‌ with ‌±0.75% OD tolerance‌ and ‌±10% wall thickness consistency‌. Ideal for oil/gas pipelines, piling, and water supply systems, SSAW pipes offer ‌30% lower installation costs‌ vs. seamless alternatives while meeting ‌ISO 3183‌, ‌ASTM A252‌, and ‌EN 10219‌ standards.
We offer Spiral Submerged Arc Welded Pipe SSAW and related grades with 100% factory direct pricing and free quotes available within 6 hours.

Our Factory

OUR-ADVANTAGE

Partners

Honors and Clients

APPLICATION-SCENARIOS

Send Us Email​

Product Introduction

Spiral Submerged Arc Welded Pipe SSAW‌ Product Overview‌

Spiral Submerged Arc Welded (SSAW) pipes are ‌cold-formed steel tubes‌ manufactured by helically welding hot-rolled steel strips at ‌60–85° forming angles‌. Designed for high-pressure fluid transmission, these pipes achieve ‌API 5L X70-grade tensile strength (570 MPa)‌ with ‌±0.75% OD tolerance‌ and ‌±10% wall thickness consistency‌. Ideal for oil/gas pipelines, piling, and water supply systems, SSAW pipes offer ‌30% lower installation costs‌ vs. seamless alternatives while meeting ‌ISO 3183‌, ‌ASTM A252‌, and ‌EN 10219‌ standards.


‌Technical Specifications‌

‌1. Dimensions & Materials‌

‌Parameter‌ ‌Specifications‌
‌Outer Diameter (OD)‌ 219.1–3,580 mm (±0.75% tolerance) ‌Wall Thickness‌: 3.2–25.4 mm (±10%)
‌Length‌ 5.8–12.5 m (custom up to 18m) ‌Spiral Weld Angle‌: 50–75°
‌Steel Grades‌ API 5L (X42–X80), ASTM A53 (A/B), EN 10217 (P235–P265), GB/T 9711 (L245–L555)
‌Coil Width‌ 0.8–2.2 m (hot-rolled SAE 1006–1045 steel) ‌Forming Speed‌: 8–25 m/min

‌2. Welding & Testing‌

  • ‌Welding Process‌: Dual-tandem submerged arc welding (SAW) with ‌ER70S-6‌ wire (AWS A5.17).
  • ‌Weld Reinforcement‌: ≤3mm height | ‌Weld Offset‌: ≤1.5mm (API 5L).
  • ‌Non-Destructive Testing (NDT)‌: 100% ultrasonic (UT), X-ray (RT), and hydrostatic testing (30MPa).

‌Chemical Composition & Mechanical Properties‌

‌1. API 5L PSL2 Grades‌ (Typical Analysis)

‌Grade‌ ‌C‌ ‌Mn‌ ‌Si‌ ‌P≤‌ ‌S≤‌ ‌YS (MPa)‌ ‌TS (MPa)‌ ‌CEₚcm‌
‌X42‌ 0.22% 1.30% 0.45% 0.025% 0.015% 290 415 0.20
‌X70‌ 0.12% 1.70% 0.45% 0.025% 0.015% 570 670 0.23

‌2. Key Performance Metrics‌

  • ‌Impact Toughness‌: ≥80J at -20°C (ISO 148-1 Charpy V-notch).
  • ‌Hardness‌: ≤248 HV10 (ISO 6507) for sour service (NACE MR0175).
  • ‌Dimensional Tolerance‌: OD ±0.75%, wall ±10%, straightness ≤0.2% of length.

‌Manufacturing Advantages‌

  1. ‌Spiral Weld Design‌: Distributes stress evenly, enhancing burst pressure resistance (30% > LSAW).
  2. ‌Cost Efficiency‌: 20–30% material savings vs. longitudinal welded pipes.
  3. ‌Customization‌: Adjustable OD/wall ratios (10:1 to 100:1) for geotechnical piling.
  4. ‌Corrosion Protection‌: Optional 3LPE/3LPP coating (2–3mm) for offshore pipelines.

‌Applications‌

‌Industry‌ ‌Use Case‌ ‌Recommended Grade‌
‌Oil & Gas‌ Cross-country transmission lines API 5L X65/X70 (PSL2)
‌Civil Engineering‌ Foundation piling ASTM A252 Gr.3 (455 MPa TS)
‌Water Supply‌ Municipal water mains EN 10219 S355J2H (470 MPa)
‌Structural‌ Bridge supports, industrial racks GB/T 3091 Q345B (470 MPa)

‌Certifications & Compliance‌

  • ‌API 5L‌: PSL1/PSL2 for sour gas service (H₂S ≤15psi).
  • ‌ISO 9001‌: Quality management system.
  • ‌DNV GL-ST-F101‌: Offshore pipeline standards.
  • ‌AS/NZS 2280‌: Ductility testing for seismic zones.

Product Show

G90 Galvanized Sheet supplier

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

Related Products

Scroll to Top