Description
Factory-Direct SSAW Pipe Mill — S235JR SSAW Spiral Steel Pipe OD 219-3000mm produced on dedicated spiral welding lines with in-house NDT and hydrostatic testing, shipped with EN 10217 mill certificates.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | S235JR SSAW Spiral Steel Pipe |
| Product Type | SSAW Steel Pipe / Spiral Submerged Arc Welded Pipe |
| Steel Grade | S235JR, S275JR, S355JR, S355J0, S355J2, Q235B, Q345B, SS400, API 5L (L245–L555), ASTM A252 |
| Standard | EN 10217-1, EN 10217-5, EN 10219-1/2, GB/T 9711, API 5L (PSL1/PSL2), ASTM A252, SY/T 5037, SY/T 5040, ISO 3183 |
| Section Shape | Round |
| Outer Diameter | 219 mm – 3000 mm |
| Wall Thickness | 5.2 mm – 30 mm |
| Length | 6 m / 12 m (Max 32 m) |
| Technique | SSAW (Spiral Submerged Arc Welding) |
| Surface Treatment | Black / 3PE / FBE |
| Ends | Plain / Beveled |
| Tolerance | ±1% (dimensional) |
| Application | Piling foundation support, bridge construction, hydraulic engineering, oil & gas pipeline transport, water transmission, industrial structural support |
| MOQ | 1 Ton |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| EPC Contractors | Piling foundation support, bridge cofferdam construction, hydraulic engineering structures |
| Construction Companies | High-rise building foundation piles, infrastructure support columns, water transmission pipelines |
| Oil & Gas | Long-distance pipeline transport, gas distribution networks, offshore platform support structures |
| Machinery Manufacturers | Industrial structural support, conveyor system foundations, equipment mounting frames |
| System Integrators | Water treatment plant piping, drainage infrastructure, industrial fluid transmission systems |
Where Wall-Thickness Tolerance Decides Piling Acceptance on Site
Negative tolerance beyond EN 10219 limits triggers third-party rejection and full-container return.
I still remember a batch of S235JR SSAW piling pipes we shipped to the Middle East years ago. The wall thickness drifted into negative tolerance during forming, and the third-party inspector at the destination port rejected the entire container. We had to ship them back, re-measure every single pipe, and replace the ones that fell short. That single shipment cost us weeks of delay and a fortune in返工 logistics. Since then, every S235JR SSAW Spiral Steel Pipe OD 219-3000mm leaving our mill goes through in-house ultrasonic thickness mapping before loading — no exceptions.
Global EPC contractors sourcing S235JR SSAW Spiral Steel Pipe OD 219-3000mm for piling and foundation projects routinely face fragmented procurement across pipe mills, coating shops, and trading agents. Each handoff adds lead-time risk, certification gaps, and coordination overhead. Missing or incomplete mill test certificates cause customs delays; inconsistent material properties trigger on-site rejection; and non-standard diameter requests bounce between suppliers who cannot cover the full range. [NEED_CITE: EN 10219 cold-formed hollow section requirements]
How Large-Diameter SSAW Geometry Matches Piling and Pipeline Loads
The helical weld seam of S235JR SSAW Spiral Steel Pipe OD 219-3000mm distributes stress along the spiral line rather than concentrating it at a single longitudinal joint. This geometry gives large-diameter pipes (up to 3000 mm OD) the structural continuity needed for driven piling and bridge cofferdam applications, where impact loads during installation would expose weak weld lines. The 5.2–30 mm wall thickness range covers both light-duty water transmission and heavy-duty oil & gas pipeline burial depths. Our dedicated SSAW lines produce these diameters in-house — no outsourcing to partner mills — so weld parameters stay under continuous monitoring from coil unrolling to final hydrostatic test.
Engineering Compliance and Surface Treatment Selection for Buried Service
Piling and foundation projects in EU markets require CE certification under EN 10210 / EN 10219 for customs clearance and structural compliance. [NEED_CITE: EN 10219 cold-formed hollow section requirements] S235JR SSAW Spiral Steel Pipe OD 219-3000mm supplied under EN 10217-1 or EN 10217-5 meets these delivery condition requirements with full chemical and mechanical traceability per heat number. For buried service in aggressive soil or marine environments, the 3PE coating system (fusion-bonded epoxy + adhesive copolymer + high-density polyethylene outer layer) provides cathodic disbondment resistance that bare or FBE-only pipes cannot match over decades of underground service. Oil & gas pipeline applications typically specify API 5L PSL1 or PSL2, and our mill produces both compliance levels on the same SSAW lines — the choice depends on your project’s design pressure and inspection regime.
Steel Grade Hierarchy and SSAW Welding Process Fundamentals
S235JR sits at the entry point of the EN structural steel hierarchy — adequate yield strength for general piling and water transmission where extreme load-bearing is not the primary design driver. Move up to S275JR or S355JR when the structural engineer specifies higher moment capacity for bridge cofferdams or deep foundation piles. The S355J0 and S355J2 variants add Charpy impact testing at 0°C and −20°C respectively, essential for cold-climate infrastructure or offshore platform support where brittle fracture risk exists. SSAW (Spiral Submerged Arc Welding) differs from ERW and seamless processes in its ability to produce large diameters (219–3000 mm) from narrower coil stock — the helical forming angle converts coil width into pipe circumference. This makes SSAW economically favorable for diameters above 508 mm where seamless mills face tooling limits and ERW lines struggle with weld integrity at thickness. The submerged arc process uses granular flux to shield the molten weld pool, producing deep penetration and low hydrogen content — critical for avoiding cold cracking in thick-wall pipes (up to 30 mm) used in piling driven into hard strata.
The Hidden Cost of Unverified Thickness and Missing Certificates
Accepting a S235JR SSAW Spiral Steel Pipe OD 219-3000mm shipment without original mill test certificates (EN 10204 3.1 or 3.2) means you cannot prove chemical composition or yield strength to the project owner’s inspector. Pipes with wall thickness below the specified tolerance — even by fractions of a millimeter — fail ultrasonic inspection on-site, triggering container-level rejection and project delay. [NEED_CITE: steel grade equivalence between EN and ASTM standards] Missing CE documentation blocks EU customs clearance; absent third-party inspection reports (SGS/BV) void the structural engineer’s sign-off. The cost of replacing rejected pipes, re-shipping, and absorbing idle crane time on a piling rig dwarfs any per-ton price saving from an unverified source.
Why EPC Procurement Teams Source S235JR SSAW Spiral Steel Pipe From Our Mill
We operate three dedicated SSAW production lines in Jinan, Shandong — not a trading desk forwarding orders to partner mills. Every S235JR SSAW Spiral Steel Pipe OD 219-3000mm rolls through our in-house physical and chemical laboratory, where incoming coil chemistry, in-process weld parameters, and final hydrostatic test results are logged per heat number. Our mill holds CE certification under EN 10210 / EN 10219 for EU market compliance, ISO 9001:2015 quality management, and verification reports from SGS and BV — the documentation package your customs broker and project inspector require. With 2,800+ specifications across our full product range, we cover non-standard diameters and wall thicknesses that fall outside typical catalog offerings, eliminating the need to source from multiple mills. Our professional loading team optimizes container stowage for large-diameter pipes (nesting smaller OD inside larger OD where geometry permits), reducing freight cost per ton for FOB, CIF, and DDP shipments to 50+ countries across EU, North America, Middle East, and Southeast Asia.
Documentation & Compliance
- Mill Test Certificate (EN 10204 3.1/3.2) documenting S235JR / S355JR chemical composition, yield strength, tensile strength, and elongation per EN 10217-1 or API 5L
- CE Certificate (EN 10210 / EN 10219) confirming factory production control for EU structural steel compliance and customs clearance
- ISO 9001:2015 Quality Management System certificate covering incoming material inspection, in-process weld monitoring, and final dimensional verification
- SGS or BV Third-Party Inspection Report available pre-shipment for independent verification of wall thickness, weld integrity, and coating adhesion
- Material Traceability Report linking each pipe to its heat number, coil chemistry, and production date for full audit trail
- Customs Documentation Package including packing list, bill of lading, and certificate of origin for destination-port clearance
Packaging, Loading & Delivery
- Black or FBE-coated S235JR SSAW pipes bundled with high-tensile steel strips and edge protectors to prevent coating damage during crane handling and ocean transit
- 3PE-coated large-diameter pipes (OD above 1000 mm) loaded individually with timber cradle supports to preserve the polyethylene outer layer from point-contact abrasion
- Container optimization for 219–610 mm OD pipes: nested loading (smaller diameter inside larger diameter) maximizes 40ft OT container payload and reduces per-ton freight cost
- Cut-to-length service available for 6 m / 12 m standard lengths or custom lengths up to 32 m, with beveled or plain ends per project drawing specification
- Heat number and steel grade stenciled on each pipe end, with bundle tags showing PO number, dimension, and coating type for site identification
- FOB Jinan/Qingdao, CIF destination port, or DDP door-to-door logistics with real-time container tracking and professional stowage planning
Submit Specifications for Mill-Direct Quotation and Certification Package
Send your S235JR SSAW Spiral Steel Pipe OD 219-3000mm inquiry with outer diameter, wall thickness, length, steel grade, surface treatment, quantity, and destination port — our engineering team responds within 12 hours with unit pricing, production lead time, payment terms, and the applicable mill test certificate format. For non-standard diameters or wall thicknesses outside the 219–3000 mm / 5.2–30 mm range, we provide custom feasibility assessment and tooling confirmation before contract signing. Confirm your CE / SGS / BV inspection requirements and container loading preferences at the quotation stage to lock in compliance documentation and optimize freight cost.
Frequently Asked Questions
Q: What is the difference between EN 10217-1, API 5L, and ASTM A252 for S235JR SSAW Spiral Steel Pipe?
A: EN 10217-1 covers non-alloy steel tubes for pressure purposes and is the baseline standard for European structural and piling applications. API 5L (PSL1/PSL2) governs line pipe for oil and gas transmission with stricter weld inspection and hydrostatic test requirements. ASTM A252 specifies welded and seamless steel pipe piles for foundation support. All three standards are producible on our SSAW lines — the choice depends on your project specification and destination market.
Q: How do I choose between Black, FBE, and 3PE surface treatment for buried S235JR SSAW pipes?
A: Black (uncoated) suits temporary structures or indoor applications where corrosion is not a design concern. FBE (fusion-bonded epoxy) provides single-layer corrosion protection for moderate soil aggressiveness and is cost-effective for water transmission pipelines. 3PE (three-layer polyethylene: FBE + adhesive + HDPE outer) delivers superior cathodic disbondment resistance and mechanical protection for long-term buried service in aggressive soil, marine environments, or cross-country oil and gas pipelines.
Q: Can you produce non-standard diameters or wall thicknesses beyond the 219–3000 mm / 5.2–30 mm range?
A: Yes. Our three dedicated SSAW production lines cover 2,800+ specifications across our full product range. For diameters or wall thicknesses outside the standard catalog, we provide custom feasibility assessment, confirm forming and welding parameters, and issue a production schedule before contract signing.
Q: What certifications are included for EU customs clearance and project compliance?
A: Every S235JR SSAW Spiral Steel Pipe OD 219-3000mm shipped to EU markets includes CE certification under EN 10210 / EN 10219, Mill Test Certificate per EN 10204 3.1 or 3.2, ISO 9001:2015 quality certificate, and complete customs documentation (packing list, bill of lading, certificate of origin). SGS or BV third-party inspection reports are available upon request for independent pre-shipment verification.
Q: How is container loading optimized for large-diameter S235JR SSAW pipes?
A: For pipes in the 219–610 mm OD range, we use nested loading (smaller diameter pipes inserted inside larger diameter pipes) to maximize 40ft OT container payload and reduce per-ton freight cost. Pipes above 1000 mm OD are loaded individually with timber cradle supports and steel strip bundling to prevent movement and coating damage during ocean transit. Our loading team prepares stowage plans based on your order’s diameter and length mix before container sealing.
Get Your S235JR SSAW Spiral Steel Pipe Quotation With Full Mill Certification
Submit your specifications (OD, WT, length, grade, coating, quantity, destination port) via email, WhatsApp, or phone — our team responds within 12 hours with factory-direct pricing, production schedule, and the complete documentation package your project requires.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Website: www.sdxjysteel.com
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxjysteel.com
Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
