API 5L X65 SSAW Spiral Welded Carbon Steel Pipe with 219mm-3500mm OD and 5.0mm-28mm WT for Oil Gas Water Pipeline

Our API 5L X65 SSAW (Spiral Submerged Arc Welded) carbon steel pipe is engineered for large-diameter, high-pressure pipeline applications. Manufactured to SY/T5037 and API 5L specifications using advanced double-sided submerged arc welding technology, this pipe delivers superior strength (minimum yield 450 MPa) and reliability for critical infrastructure projects.

• Spiral Welding Technology: Continuous spiral forming allows production of large-diameter pipes with excellent roundness and straightness
• X65 High Strength Grade: Minimum yield strength of 450 MPa (65 ksi) for high-pressure transmission pipelines
• Extra-Large Diameter Range: OD from 219mm to 3500mm covers all major pipeline specifications
• Double-Sided Welding: Internal and external submerged arc welding ensures full penetration and defect-free joints
• Long Length Capability: Available in lengths up to 24 meters to reduce field welding joints

• Long-distance oil and gas transmission pipelines
• Water supply and sewage treatment mains
• Offshore and subsea pipeline projects
• Structural pipe piling and foundation engineering
• Petrochemical and refinery process piping

Comprehensive testing includes 100% hydrostatic pressure test, radiographic (X-ray) weld inspection, ultrasonic testing, mechanical properties testing (tensile, yield, elongation, impact), chemical analysis, and dimensional verification.

Standard shipping package with plastic end caps, bundled and secured with steel straps, waterproof wrapping for ocean transport. Delivery within 15-30 workdays from order confirmation.