Description
Factory-direct SSAW spiral steel pipe supply — every batch tested in our in-house physical and chemical laboratory before container loading.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | SSAW Spiral Steel Pipe |
| Product Type | SSAW Steel Pipe / Spiral Welded Steel Pipe |
| Steel Grade | Q235, Q345, Q195, Grade B, X42, X52, X60, X70, L245, L290, L320, L360, L390, L415, 20#, 10#, 16Mn, ASTM A36, ASTM A500, ASTM A53, ASTM A106, SS400, St37, St52, S235JR, S355JR |
| Standard | ASTM, GB/T 3091-2001, GB/T 13912-2002, BS 1387, ASTM F1083 |
| Section Shape | Round |
| Size Range | OD 10–1000mm |
| Wall Thickness | 1–80mm |
| Length | 1–12m (or customized) |
| Technique | SSAW (Spiral Submerged Arc Welded) |
| Surface Treatment | Black Painting / Hot Rolled |
| Ends | Plain / Beveled (customizable) |
| Application | Drainage and sewage systems, liquid delivery, construction pipe, structural pipe, curtain wall, machinery parts |
| MOQ | 5 Tons |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Municipal Infrastructure | Underground drainage networks, sewage collection mains, stormwater discharge lines |
| Industrial Fluid Transport | Water supply pipelines, gas distribution networks, pump well casings |
| Construction & Structural | Fence posts, greenhouse frame supports, curtain wall backing structures |
| Machinery & Equipment | Conveyor roller tubes, hydraulic cylinder sleeves, machinery structural parts |
Where Wall-Thickness Tolerance Decides Whether a Shipment Gets Accepted at Site
A single batch failing third-party re-inspection on wall thickness can trigger full container rejection at destination port.
Buyers ordering large-diameter SSAW spiral steel pipe for drainage and sewage infrastructure often discover specification gaps only after the goods arrive. Standard wall thickness tolerances under certain production setups allow negative deviations that technically pass mill standards but fail project-specific engineering requirements. Missing or incomplete mill test certificates compound the problem — customs authorities in regulated markets demand EN 10204 3.1 or 3.2 format documentation, and any discrepancy between the certificate and physical measurements halts clearance. [NEED_CITE: EN 10204 inspection document types for steel products]
Matching Large-Diameter Spiral Pipe to Municipal Drainage Engineering
Municipal drainage and sewage networks demand round-section pipes with outer diameters reaching 1000mm and wall thicknesses up to 80mm to handle hydrostatic pressure and soil loading. The SSAW spiral welding process distributes seam strength along the helical line, making it suitable for long-span underground installations where continuous length reduces joint count. Our SSAW spiral steel pipe production covers the full OD and thickness range listed above, with plain or beveled ends cut to project-specified lengths between 1m and 12m, minimizing on-site welding work for contractors laying gravity-flow or pressurized sewage lines.
Engineering Compliance and Certification Requirements
Structural and pressure-containing applications require the SSAW spiral steel pipe to conform to recognized standards — ASTM A53 and A106 for North American fluid conveyance projects, EN 10219 for European structural hollow sections, and GB/T 3091 for domestic Chinese infrastructure. Steel grade selection directly affects load-bearing capacity: Q235 and S235JR serve general structural purposes, while X42 through X70 API-grade materials handle higher-pressure pipeline environments. Third-party certification from SGS or BV before loading provides independent verification of chemical composition and mechanical properties, which EU and Middle East customs authorities routinely require. [NEED_CITE: ASTM A53 and A106 specification requirements for spiral welded pipe]
Steel Grade Selection and SSAW Process Fundamentals
The SSAW spiral submerged arc welding process forms the pipe by helically winding steel coil and welding both inner and outer seams simultaneously under flux coverage. This produces a continuous helical seam that distributes stress more evenly than longitudinal welds, particularly beneficial for large-diameter pipes where circumferential integrity matters. Steel grade selection follows project specifications: Q235 and Q345 dominate Chinese municipal projects, while S235JR and S355JR serve European structural applications, and X42–X70 grades meet API 5L requirements for oil and gas transmission. Surface treatment with black painting provides basic corrosion protection for indoor or short-term outdoor use, while hot-rolled finish suits applications where subsequent coating or galvanizing will be applied on site. Wall thickness tolerance directly affects theoretical weight calculations — orders placed on weight-based pricing require careful attention to whether the mill produces to nominal or minimum thickness specifications. [NEED_CITE: API 5L steel grade designations and mechanical property ranges]
Hidden Costs of Incorrect Grade or Tolerance Procurement
Ordering SSAW spiral steel pipe without verifying grade equivalence across standards leads to material mismatches at site — Q235 substituted where S235JR is specified may pass visual inspection but fail mechanical testing under EN 10219 requirements. Negative wall thickness tolerance beyond acceptable limits reduces actual load-bearing capacity, creating structural safety concerns that surface only during engineering acceptance inspections. Missing CE marks or incorrect standard references on mill test certificates block EU customs clearance entirely, forcing return shipment or costly re-documentation. [NEED_CITE: steel grade equivalence between GB, EN, and ASTM standards]
Why Buyers Source SSAW Spiral Steel Pipe from SD XJY Pipe
Every production batch undergoes dimensional, mechanical, and chemical testing in our in-house physical and chemical laboratory before release, with complete mill test certificates generated from actual test data rather than template documents. We cover 2,800+ specifications across our tube and section steel divisions, meaning large-diameter spiral pipe orders can be consolidated with structural hollow sections and beams in a single shipment, reducing logistics complexity for EPC contractors. Full international certifications including ISO 9001:2015, Lloyd’s CE (EN 10210/10219), and Singapore FPC ensure documentation meets customs requirements across 50+ export markets. Professional container loading with anti-damage measures prevents bending and surface damage during ocean transit, particularly critical for long-length pipes and precision-end finishes. Custom non-standard sizes, lengths, and end treatments are available with MOQ as low as 5 Tons, accommodating both project-specific requirements and trial orders.
Documentation & Compliance
- Mill test certificate documenting Q235/X70 chemical composition and mechanical properties per ASTM A53 or GB/T 3091, formatted to EN 10204 3.1 standard
- CE certificate covering EN 10210/EN 10219 compliance for structural hollow sections exported to European markets
- ISO 9001:2015 quality management system certificate covering SSAW spiral steel pipe production processes
- SGS or BV third-party inspection report verifying wall thickness, outer diameter, and weld seam quality before container loading
- Material traceability documentation linking each pipe to heat number, coil batch, and production date
- Complete customs documentation including packing list, bill of lading, and certificate of origin for destination clearance
Packaging, Loading & Delivery
- SSAW spiral steel pipe bundled with steel strips at intervals matching the 1–12m length range, with edge protectors preventing black painting damage during handling
- Surface protection maintained through careful stacking separation, preserving hot-rolled finish or painted coating during ocean transit
- Container loading optimized for large-diameter pipes up to 1000mm OD, with wooden cradles and chocking preventing movement and ovality deformation
- Custom length cutting to project-specified dimensions between 1m and 12m, reducing on-site cutting waste for drainage and sewage installations
- Heat number and steel grade marking on each pipe end, enabling site traceability and inspection verification
- FOB, CIF, and DDP shipping terms available, with professional loading supervision ensuring damage-free arrival at destination port
Requesting Quotation and Technical Documentation for SSAW Spiral Steel Pipe
Submit your required outer diameter, wall thickness, steel grade, length, surface treatment, and destination port to receive a detailed quotation including unit pricing, production lead time, and shipping terms. We provide mill test certificates from actual batch testing, arrange SGS or BV third-party inspection on request, and confirm custom size availability for non-standard specifications. Our team responds within 12 hours with complete technical and commercial documentation for your engineering review.
Frequently Asked Questions
Q: What steel grades are available for SSAW spiral steel pipe, and how do I select the correct grade for my project?
A: We produce SSAW spiral steel pipe in grades ranging from Q195, Q235, Q345 for general structural and municipal applications, through S235JR and S355JR for European standard projects, to X42, X52, X60, X70 and corresponding L245–L415 API grades for pressure pipeline systems. Grade selection depends on your project specification — we provide equivalence guidance between GB, EN, and ASTM standards to ensure correct material ordering.
Q: Can you provide third-party inspection before shipment, and what does the mill test certificate include?
A: Yes, we arrange SGS or BV third-party inspection covering dimensional verification, weld seam quality, and mechanical testing before container loading. Every shipment includes a mill test certificate documenting actual chemical composition and mechanical properties per the specified standard, with heat number traceability for each pipe.
Q: What is the minimum order quantity, and do you produce non-standard sizes?
A: The MOQ for SSAW spiral steel pipe is 5 Tons. We produce custom non-standard outer diameters, wall thicknesses, and lengths beyond the standard 10–1000mm OD and 1–80mm thickness range, with typical production lead times for custom specifications.
Q: How do you ensure the pipes arrive without damage during ocean shipping?
A: We use professional container loading with wooden cradles, steel strip bundling, and edge protectors specifically designed for large-diameter spiral pipe. Each bundle is secured to prevent movement, and surface treatment — whether black painting or hot-rolled finish — is protected through careful stacking separation.
Q: What surface treatment options are available for corrosion protection?
A: Standard options include black painting for basic protection and hot-rolled finish for applications requiring subsequent on-site coating. For enhanced corrosion resistance in drainage and sewage environments, we can coordinate 3PE coating or hot-dip galvanizing based on your project requirements.
Get Your SSAW Spiral Steel Pipe Quotation with Full Certification Package
Send your specifications — outer diameter, wall thickness, steel grade, quantity, and destination port — to receive pricing, mill test certificate samples, and production scheduling within 12 hours.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Website: www.sdxjypipe.com
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxjypipe.com
Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
