Description
Full-Range API 5L SSAW Pipe from Stock — We hold X42 through X70 spiral welded steel pipe in OD 10–1000 mm and WT 1–80 mm, ready for immediate dispatch to oil & gas and piling projects worldwide.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | X42-X65 Spiral Welded Steel Pipe |
| Product Type | Spiral Welded Steel Pipe (SSAW) |
| Steel Grade | X42, X52, X60, X65, X70, L245, L290, L360, L390, L415, Q195, Q235, Q345, ASTM A36, ASTM A53, ASTM A106, ASTM A500, SS400, St37, St52, S235JR |
| Standard | API 5L, ASTM A53, ASTM A106, ASTM A500, GB/T 3091-2001, GB/T 13912-2002, BS 1387, ASTM F1083 |
| Section Shape | Round |
| Size Range | Outer Diameter 10–1000 mm |
| Wall Thickness | 1–80 mm |
| Length | 6–12 m (or customized) |
| Technique | Hot Rolled / Spiral Welded |
| Surface Treatment | Black Painting / Oiled / Non-oiled |
| Tolerance | ±1% |
| Ends | Plain / Beveled (as required) |
| Application | Oil & gas transmission pipeline / Fluid transport / Piling & foundation / Construction structural pipe / Machinery parts / Greenhouse structure / Fence post / Curtain wall |
| MOQ | 5 Tons |
| Origin | China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Oil & Gas EPC | Onshore and offshore transmission pipelines, gathering lines, slug catchers |
| Civil Infrastructure | Bridge piling, port foundation, high-rise building piles |
| Water & Utilities | Raw water transmission mains, pump well casing, drainage outfalls |
| Industrial Construction | Machinery frames, conveyor supports, greenhouse structural columns |
| Energy & Petrochemical | Process piping racks, tank farm foundations, utility pipe bridges |
Where Missing Heat Number Traceability Derails a Pipeline Commissioning
An unreadable heat number on a mill test certificate can halt hydrostatic testing and delay project handover by weeks.
On a recent West Africa gas transmission job, the client’s third-party inspector flagged two heats where the stamping on the pipe body did not match the MTC heat number. The entire section had to be re-inspected, and two joints were rejected outright. With API 5L X42-X65 spiral welded steel pipe, every heat must carry traceable chemical composition and mechanical property records from slab to finished pipe. [NEED_CITE: API 5L heat number traceability requirements for line pipe]
Buyers sourcing SSAW pipe for oil & gas or piling work routinely encounter grade confusion between API 5L, ASTM A53, and GB/T 9711 — standards that look interchangeable on paper but differ in testing frequency, impact test temperatures, and weld seam inspection protocols. A single mislabeled X52 joint in a high-pressure section can trigger full-batch rejection.
Matching Wall Thickness and Diameter to Transmission Pressure and Piling Load
Spiral welded steel pipe in the X42–X65 range covers the pressure envelope for most onshore gas gathering lines and medium-pressure distribution networks. The OD 10–1000 mm and WT 1–80 mm window means a single API 5L X42 X52 X65 spiral welded steel pipe supplier can furnish both the 219 mm × 6 mm gathering line and the 813 mm × 19 mm trunk section from the same mill schedule. For piling applications, the same diameter range serves driven piles in cohesive soils, with beveled ends prepared to match the contractor’s welding procedure specification.
Engineering Compliance Across API, ASTM, and EN Frameworks
API 5L governs the chemical composition limits, tensile requirements, and hydrostatic test pressures for line pipe used in oil & gas transmission, while ASTM A53 and A106 apply to process and high-temperature service. For projects entering European markets, CE marking and conformity with EN 10219 or EN 10210 hollow section standards determine whether the shipment clears customs or sits at the port. [NEED_CITE: CE marking requirements for structural steel pipe under EU Construction Products Regulation] Wall thickness tolerance of ±1% keeps the actual weight within calculable range for foundation design, and beveled ends cut to API 5L bevel geometry allow field welders to proceed without re-preparation.
Understanding Spiral Welding, Grade Progression, and Surface Protection
The spiral welded (SSAW) process forms hot-rolled coil into a helical seam, allowing large diameters from narrower coil widths — a cost advantage over seamless for diameters above 406 mm where seamless availability thins out. Steel grade progression from X42 through X65 reflects increasing specified minimum yield strength, meaning X65 pipe carries higher internal pressure than X42 at the same wall thickness, but demands tighter control on weld seam quality and hydrogen-induced cracking resistance in sour service. [NEED_CITE: API 5L grade designation and yield strength relationship] Surface treatment selection — black painting for inland storage, oiled for short-term transit protection, or non-oiled for immediate coating — depends on the downstream handling sequence and the corrosion environment at the installation site.
The Hidden Cost of Negative Tolerance and Unverified Certificates
Pipes delivered with wall thickness consistently at the lower edge of tolerance reduce the theoretical weight per meter, which looks like savings on paper but compromises hydrostatic test margins and structural load capacity in piling applications. When a batch of X52 SSAW pipe arrives without original mill test certificates — or with certificates that cannot be cross-referenced to the heat number stamped on each joint — the project owner faces a choice: pay for destructive re-testing at the destination port, or reject the shipment and restart procurement. [NEED_CITE: consequences of forged mill test certificates in steel pipe procurement] Either path adds weeks to the schedule and erodes the per-ton savings the buyer thought they secured.
Why Engineering Procurement Teams Return for Repeat Orders
Our plate and coil division operates with dedicated specification matching — when you request API 5L X42 X52 X65 spiral welded steel pipe, we pull the exact grade, diameter, and wall thickness from stock or schedule mill rolling within typical production lead times. Every pipe leaves with an original mill test certificate showing heat number, chemical composition, and mechanical properties, and we accept SGS, BV, or TUV third-party inspection at any production stage. Custom cutting to 6–12 m lengths and plain or beveled end finishing are handled in-house, so field crews receive pipe ready for welding. Professional heavy-cargo loading — using open-top containers with proper end bracing and weight distribution — prevents the oval deformation and bevel damage that plague improperly stuffed shipments.
Documentation & Compliance
- Mill test certificate documenting X42 through X65 chemical composition, yield strength, tensile strength, and elongation per API 5L, traceable to heat number stamped on each pipe
- CE certificate and Declaration of Performance for structural hollow sections conforming to EN 10219, required for European market customs clearance
- ISO 9001:2015 quality management certificate covering the full SSAW pipe production and inspection process
- SGS or BV third-party inspection report available at mill, during loading, or at destination port, covering dimensional checks and weld seam examination
- Material traceability sheet linking each pipe’s heat number to its original slab chemistry and rolling records
- Complete customs documentation package including packing list, bill of lading, certificate of origin, and commercial invoice formatted for destination country requirements
Packaging, Loading & Delivery
- X42–X65 SSAW pipe bundled with steel strips and edge protectors, with bundle weight calibrated to stay within container payload limits for 20ft and 40ft open-top units
- Black painted or oiled surface protected by waterproof wrapping at pipe ends to prevent corrosion during ocean transit to tropical and coastal project sites
- 6–12 m lengths loaded with timber chocks and wire bracing at both ends to prevent longitudinal shifting and oval deformation during rough-sea transit
- Heat number and steel grade stenciled on each pipe end in weather-resistant paint, matching the mill test certificate for field verification
- FOB, CIF, and DDP shipping terms available, with break-bulk and flatbed options for project cargo exceeding container dimensions
- Custom cutting to site-specific lengths available before shipment, reducing field cutting waste and welding joint counts
Getting Your Quotation and Mill Test Certificate Started
Send your required API 5L grade, outer diameter, wall thickness, length, and destination port — we return a detailed quotation with material cost, processing fees, and shipping terms within 12 hours. If your project calls for non-standard dimensions, beveled end geometry, or third-party inspection staging, we confirm feasibility and timeline before you commit.
Request Your API 5L X42 X52 X65 Spiral Welded Steel Pipe Quote
Submit your specification sheet and destination port to receive pricing, original mill test certificate samples, and loading plan confirmation.
Company: Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Website: www.xjyplate.com
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@xjyplate.com
Frequently Asked Questions
Q: What is the difference between API 5L X42, X52, and X65 grades for spiral welded pipe?
A: These grades represent increasing specified minimum yield strength levels within the API 5L standard. X42 suits lower-pressure gathering lines, X52 covers most onshore transmission applications, and X65 serves higher-pressure trunk lines. The chemical composition and mechanical property requirements tighten as the grade increases, particularly for weld seam integrity.
Q: Can you provide third-party inspection for API 5L X42 X52 X65 spiral welded steel pipe?
A: Yes. We accept SGS, BV, and TUV inspection at any stage — during production, at final inspection before loading, or at the destination port. The inspector verifies dimensional accuracy, weld seam quality, surface condition, and cross-references the heat number on each pipe against the original mill test certificate.
Q: What is the minimum order quantity for SSAW pipe?
A: The minimum order is 5 tons. For project orders requiring multiple grades, diameters, or wall thicknesses, we consolidate from stock or coordinate mill rolling schedules to meet the total volume while keeping individual line items flexible.
Q: How do you handle loading and shipping for long-length spiral welded pipe?
A: For 6–12 m lengths, we use open-top containers with timber chocks and wire bracing at both pipe ends to prevent shifting and oval deformation. For project cargo exceeding container capacity, we arrange break-bulk or flatbed shipping with proper lashing plans. Every loading plan accounts for weight distribution to avoid overweight penalties at port.
Q: What documentation do you provide with each shipment?
A: Every shipment includes the original mill test certificate with heat number traceability, chemical composition, and mechanical properties. We also supply packing list, bill of lading, certificate of origin, and commercial invoice. CE certificates and third-party inspection reports are available upon request for projects requiring customs compliance or quality verification.
