Description
Factory-Direct SSAW Pipe from Own Mill — XJY Structure operates its own steel production facility with 3 production lines and 2,800+ raw material specifications, delivering API 5L SSAW spiral welded steel pipe with full material traceability from slab to finished product.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | API 5L SSAW Spiral Welded Carbon Steel Pipe |
| Product Type | SSAW Spiral Welded Steel Pipe |
| Steel Grade | Q195, Q235, Q345, SS400, A36, A53, API 5L |
| Standard | API 5L, GB, ASTM, JIS, ISO 9001 |
| Section Shape | Round |
| Wall Thickness | 0.5–80 mm |
| Length | Customer’s Request |
| Technique | SSAW (Spiral Submerged Arc Welded) |
| Surface Treatment | Black Painted / Slightly Oiled / Primary Color |
| Tolerance | ±1% |
| Invoicing | By Theoretical Weight |
| Application | Transmission of gas, water, petroleum; fencing; construction |
| MOQ | 25 Tons (one 20ft container) |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Oil & Gas | Onshore transmission pipelines, gathering lines, distribution networks |
| Municipal Infrastructure | Water supply mains, sewage conveyance, stormwater drainage |
| Construction | Piling columns, structural support, foundation casings |
| Industrial | Process piping, cooling water circuits, fence posts |
Where Wall Thickness Tolerance Decides Pipeline Acceptance
Tolerance beyond ±1% triggers third-party rejection and full container return.
When sourcing API 5L SSAW spiral welded steel pipe for oil, gas, or water transmission, buyers face material traceability gaps when fabricators source steel from third parties. A batch of X52 SSAW pipe shipped to the Middle East arrived with wall thickness at the negative tolerance limit — third-party inspection at port rejected the entire shipment. The cost of return shipping, re-measurement, and replacement exceeded the original material savings. Every pipe we produce carries individual measurement reports, because in pipeline work, a fraction of a millimeter separates compliance from catastrophe. [NEED_CITE: API 5L dimensional tolerance requirements for spiral welded pipe]
Matching Pipeline Pressure Requirements with Wall Thickness Selection
API 5L SSAW spiral welded steel pipe covers wall thickness from 0.5 mm to 80 mm, supporting both thin-wall fluid transport and heavy-wall high-pressure applications. The spiral submerged arc welding process produces continuous helical seams suitable for large-diameter pipelines where straight-seam alternatives face diameter limitations. Our vertically integrated mill-to-pipe supply chain ensures each heat number traces back to our own steel production facility, eliminating certification gaps between material supplier and fabricator.
Engineering Compliance for Transmission Pipeline Projects
Pipeline projects demand strict adherence to API 5L specifications for chemical composition, mechanical properties, and dimensional tolerances. The SSAW process meets API 5L PSL1 and PSL2 requirements for onshore transmission pipelines, while GB/T 9711 covers domestic Chinese pipeline standards. Surface treatment selection — black painted for indoor applications, slightly oiled for temporary corrosion protection during transit, or custom coating per project specification — directly affects service life in corrosive environments. Third-party inspection through SGS, BV, or TÜV validates compliance before shipment. [NEED_CITE: API 5L PSL1 vs PSL2 requirements for spiral welded pipe]
Steel Grade Selection Across International Standards
API 5L, ASTM A53, and GB/T 9711 represent different standardization systems but share overlapping grade designations. API 5L covers pipeline grades from A to X80, while ASTM A53 addresses general pressure applications with Grades A and B. The Q-series (Q195, Q235, Q345) follows Chinese GB standards with yield strength designations. SSAW spiral welded pipe production uses submerged arc welding with continuous strip forming, producing helical seams that distribute stress more evenly than longitudinal seams under internal pressure. Wall thickness tolerance of ±1% ensures dimensional consistency across the full length, critical for field welding and flange connection.
Hidden Costs of Incorrect Material Certification
Material certification gaps create cascading project failures. Pipes sourced from third-party suppliers without heat number traceability face customs rejection when mill test certificates cannot verify chemical composition. Negative tolerance exceeding specification limits triggers structural safety concerns during engineering review. Missing WPS and PQR documentation delays welding procedure qualification on-site. The cost of re-inspection, replacement shipping, and project schedule delays typically exceeds the initial material price difference between certified and uncertified sources. [NEED_CITE: material traceability requirements for API 5L pipeline steel]
Why Source API 5L SSAW Pipe from an Integrated Mill-Fabricator
XJY Structure operates its own steel production facility with 3 production lines and 2,800+ raw material specifications, eliminating the gap between material supplier and fabricator. Each API 5L SSAW spiral welded steel pipe carries mill test certificates with full heat number traceability from our own steel mill. Our engineering team provides shop drawing review and material optimization before production begins. Certified welding procedures (WPS/PQR) and qualified welders ensure compliance with AWS and EN standards. Complete quality documentation packages include dimensional inspection reports, coating reports, and third-party inspection coordination. Professional loading planning handles oversized pipe cargo with specialized lashing for ocean transit.
Documentation & Compliance
- Mill Test Certificate documenting API 5L chemical composition and mechanical properties per heat number
- ISO 9001 quality management system certificate covering SSAW pipe production
- SGS/BV/TÜV third-party inspection reports available for wall thickness and coating verification
- Material traceability records linking each pipe to specific heat numbers from our own steel mill
- Complete export documentation: packing list, bill of lading, certificate of origin
- Welding procedure specifications (WPS) and procedure qualification records (PQR) for field welding
Packaging, Loading & Delivery
- API 5L SSAW pipes bundled with steel strips and edge protectors to preserve black painted or oiled surface during ocean transit
- Wall thickness range 0.5–80 mm accommodates both standard container loading and oversized cargo planning
- Custom length cutting available per project specification, with standard lengths optimized for 20ft container loading at 25-ton MOQ
- Heat number and steel grade stenciled on each pipe for site identification and traceability
- FOB/CIF/DDP terms available with professional oversized cargo loading and lashing for international shipment
- Complete export documentation package prepared before departure, including customs clearance support
Start Your API 5L SSAW Pipe Inquiry
Submit your project drawings, steel grade requirements, wall thickness specifications, and destination port to receive a detailed quotation within 24 hours. Our engineering team reviews shop drawings and provides material optimization recommendations before production begins. Confirm third-party inspection requirements and certification documentation needs to ensure customs compliance at destination.
Request Your API 5L SSAW Pipe Quotation
Share your specifications and receive pricing with mill test certificates within 24 hours.
Contact XJY Structure
Website: www.xjystructure.com
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@xjystructure.com
Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
