The SSAW Steel Pipe Production Process: A Professional Guide for Procurement Managers

For large-diameter pipeline projects—whether for water transmission, piling, or oil and gas—SSAW (Spiral Submerged Arc Welded) pipes are often the most cost-effective and versatile choice. However, the reliability of an SSAW pipe depends entirely on the precision of its manufacturing process.
At JS FITTINGS, we adhere to a rigorous production flow that exceeds standard requirements. Here is a technical breakdown of how we transform hot-rolled steel coils into high-performance spiral pipes.

Raw Material Preparation & Uncoiling (The Foundation)

The quality of an SSAW pipe begins with the steel coil. We utilize premium hot-rolled coils from top-tier mills.
Process: The coil is uncoiled and leveled to ensure a flat surface.
Quality Point: We perform chemical analysis and mechanical testing on every heat number before production begins to ensure compliance with ASTM A252 or API 5L grades.

Milling & Forming: The Precision Spiral (H2)

Unlike LSAW pipes, SSAW pipes are formed by bending the steel strip at a specific “spiral angle.”
Technical Edge: Our advanced 3-roll forming technology ensures that the diameter and roundness tolerances are kept well within international standards. This precision is critical for on-site welding and alignment.

Double-Sided Submerged Arc Welding (The Core)

The “Submerged Arc” (SAW) process is what gives these pipes their strength.
Internal & External Welding: We utilize automatic twin-wire welding systems. By welding both the inside and outside of the seam, we ensure full penetration and a smooth finish.
Flux Management: High-quality welding flux is used to prevent oxidation, ensuring the weld seam is free from slag inclusions and porosity.

Real-Time Ultrasonic & X-Ray Inspection (H2)

This is where many suppliers cut corners, but where JS FITTINGS excels.
Online NDT: Every millimeter of the weld seam is scanned by automatic ultrasonic testing (UT) devices immediately after welding.
Manual Cross-Check: Any “suspect” areas identified by the machine are manually re-inspected using X-ray imaging to ensure 100% integrity.

Hydrostatic Testing: Pressure Performance (H2)

To simulate real-world working conditions, every SSAW pipe undergoes a hydrostatic test.
Standard: Pipes are pressurized for at least 5-10 seconds to verify that the body and weld seam can withstand the specified project pressures without leaking or deforming.

Beveling & Coating

Beveling: Precision end-beveling is performed to allow for easy field welding.
Surface Protection: Depending on the application (e.g., underground water or offshore piling), we apply Bitumen, 3LPE, or FBE coatings to prevent long-term corrosion.

Technical Specifications

Why Choose SSAW Pipes from JS FITTINGS?

As a specialized industrial pipe supplier, we understand that for stockists and EPC contractors, a pipe is more than just steel—it’s the lifeline of a project.

Please contact JS FITTINGS to get more informations about the SSAW steel pipes.

Email: info@jssteelpipes.com

WhatsApp: 008618003119682