Description
Factory-Direct SSAW Pipe Supply — 3 production lines running 20,000+ tons monthly from Jinan, covering API 5L and ASTM grades in OD 219–4200 mm.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | SSAW Spiral Welded Steel Pipe |
| Product Type | Round Steel Pipe / Circular Hollow Section |
| Steel Grade | Q235, Q345, ASTM A53 Grade B, ASTM A500 Grade A / Grade B / Grade C, API 5L |
| Standard | API 5L, ASTM A53, ASTM A252, ASTM A500, GB/T 9711-2011, GB/T 3091, GB/T 13793 |
| Section Shape | Round |
| Outer Diameter | 219–4200 mm |
| Length | 6–12 m |
| Technique | Spiral Weld (SSAW) |
| Surface Treatment | Bare or Painted |
| Ends | Plain or Beveled |
| Oiled or Non-oiled | Non-oiled |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Application | Fluid transport, Gas pipeline, Oil pipeline, Piling, Drill pipe, Structural applications |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Infrastructure & Piling | Driven pile foundations, bridge pier casings, retaining wall structures |
| Oil & Gas Transmission | Onshore gathering lines, cross-country trunk pipelines, well casing |
| Industrial Fluid Transport | Cooling water circuits, process piping, slurry conveyance |
| Structural Fabrication | Column members, truss chords, equipment support frames |
What Diameter Range and Wall Tolerance Mean for Your Piling or Pipeline Budget
Oversized OD with tight tolerance control separates a smooth site weld from a rejected heat.
When you source large-diameter SSAW spiral welded steel pipe for piling or pipeline work, the first cost you absorb is not the unit price — it is the beveling rework, the fit-up gap filler, or the third-party inspector’s rejection note. Pipes rolled outside tolerance force your field crew to grind bevels by hand or reject entire lengths at the staging area. On a 4,200 mm OD pile, even a few millimeters of eccentricity means the driving shoe does not seat flush, and the hammer transfers impact unevenly through the wall. [NEED_CITE: EN 10219 cold-formed hollow section requirements] That is why we run every SSAW spiral welded steel pipe through three-stage in-house dimensional checks before it leaves Jinan, and we keep API 5L and ASTM A252 heats separated by heat number so your inspector can pull certificates on the spot.
How Large-Diameter SSAW Pipe Meets Piling and Pipeline Engineering Demands
Large-diameter SSAW spiral welded steel pipe in API 5L and ASTM A252 grades is engineered for the two applications that punish steel the hardest: driven foundation piles and pressurized transmission lines. The spiral weld geometry distributes hoop stress more evenly than a straight seam at diameters above 1,000 mm, which is why piling contractors across Southeast Asia and the Middle East specify it for bridge pier and wharf foundations. Our OD range of 219–4200 mm covers everything from small-bore utility casings to major river-crossing pipeline sections, with plain or beveled ends ready for field welding.
Engineering Compliance and Certification Pathways
Structural piling to ASTM A252 requires documented yield and tensile values per heat, while API 5L pipeline grades demand chemical composition limits and hydrostatic test records. [NEED_CITE: steel grade equivalence between EN and ASTM standards] For European projects, the same pipe family can be supplied under EN 10219 cold-formed hollow section requirements when the design calls for structural rather than pressure containment. CE marking under EN 10210/EN 10219 is mandatory for structural hollow sections entering the EU, and missing paperwork is the single most common cause of customs hold at Rotterdam and Hamburg. [NEED_CITE: CE marking requirements for structural steel hollow sections] Bare or painted surface finishes are selected based on whether the pipe will receive field-applied corrosion protection or serve in a temporary piling role where coating is unnecessary.
Steel Grade Selection and Spiral Weld Process Fundamentals
The Q235 and Q345 grades map directly to ASTM A53 Grade B and ASTM A500 Grade B/C in structural applications, giving procurement teams flexibility when project specs switch between Chinese domestic standards and international codes. API 5L covers the pressure-rated pipeline grades, where carbon equivalent and sulfur limits become critical for sour service or low-temperature environments. The SSAW spiral weld process forms the pipe from coiled plate at an angle to the pipe axis, creating a helical seam that allows continuous production in large diameters — something ERW mills cannot achieve beyond roughly 600 mm. [NEED_CITE: SSAW vs LSAW vs ERW pipe manufacturing differences] Non-oiled surface condition with bare or painted finish gives downstream applicators a clean substrate for 3PE coating or field wrap, while beveled ends at 30–37.5 degrees prepare the pipe for immediate girth welding on the spread.
Hidden Costs of Wrong Grade or Missing Certification
Ordering Q235 when the structural engineer specified S355 equivalent means the pipe fails load calculation review at the consultant’s office — not at your yard, but after it has already shipped. Missing mill test certificates or untraceable heat numbers trigger third-party inspector holds, and in the EU, absent CE documentation under EN 10219 means the container sits at port until the paperwork arrives or the cargo is refused entry. Negative tolerance abuse on wall thickness reduces the actual section modulus below design assumptions, creating a structural safety gap that only surfaces during load testing or, worse, under service loads. [NEED_CITE: consequences of wall thickness tolerance deviation in structural steel]
Why Procurement Teams Source SSAW Pipe from Xin Jiyuan
We run three SSAW lines simultaneously in Jinan, giving us the capacity to hold standard sizes in ready stock while producing custom diameters and lengths on dedicated schedules. Every SSAW spiral welded steel pipe leaves our mill with original test certificates tied to heat number, and we welcome SGS or BV third-party inspection at our facility before container loading. Our export team handles the full documentation stack — packing list, bill of lading, certificate of origin, and CE declarations — so your customs broker receives a complete packet on the first submission. For piling contractors buying mixed sizes, we consolidate API 5L, ASTM A252, and structural grades into a single container load, optimizing CBM and reducing your per-ton freight cost. Volume discount tiers apply for recurring orders, and we review pricing with long-term partners every six months.
Documentation & Compliance
- Mill test certificate documenting API 5L chemical composition, tensile properties, and hydrostatic test results per heat number
- CE certificate covering EN 10210 and EN 10219 for structural hollow sections entering European markets
- ISO 9001:2015 quality management certificate covering the full production and inspection workflow
- SGS or BV third-party inspection report available upon request, covering dimensional checks, weld seam UT, and surface condition
- Material traceability sheet linking each pipe to its heat number, plate coil origin, and production date
- Complete customs document package including packing list, bill of lading, and certificate of origin
Packaging, Loading & Delivery
- SSAW spiral welded steel pipe bundled with steel strips and edge protectors, sized to match 6–12 m lengths for container or breakbulk shipment
- Bare or painted surface protected by wooden cradles at contact points to prevent coating damage during ocean transit
- Container loading optimized for large-diameter pipe: OD 219–600 mm pipes nested for maximum CBM utilization, while OD above 1,000 mm shipped on flat rack or breakbulk with chocking
- Beveled ends fitted with plastic protectors to preserve welding preparation geometry during handling and transport
- Heat number and steel grade stenciled on each pipe end for site identification and traceability verification
- FOB, CIF, and DDP terms available with professional export team coordinating port clearance and door-to-door logistics
Getting Your SSAW Pipe Quote and Mill Documentation
Send your specification sheet — OD, wall thickness, length, steel grade, quantity, and destination port — and we return a bulk quotation with volume pricing, production lead time, and available mill test certificate formats within 12 hours. For non-standard diameters or custom end treatments, we provide a feasibility check and lead time confirmation before you commit.
Request Your SSAW Spiral Welded Steel Pipe Quotation
Submit your specifications, steel grade, and destination port to receive factory-direct pricing, production schedule, and mill test certificate samples.
Contact: admin@sdxinjiyuan.com | WhatsApp: +86 188 5315 7756 | Website: www.sdxinjiyuan.com
