Description
Factory-Direct SSAW Spiral Steel Pipe Supply — Our own mill with 3 production lines and 2,800+ raw material specifications ensures full material traceability from raw steel to finished SSAW spiral steel pipe, eliminating third-party sourcing risks.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | SSAW Spiral Steel Pipe (Outer Diameter 219.1mm–3620mm) |
| Product Type | SSAW Welded Steel Pipe / Spiral Submerged Arc Welded Pipe |
| Steel Grade | Q235, Q345, A53B, A106B, API 5L B, X42, X46, X52, X60, X65, ST37.0, ST35.8, ST37.2, ST35.4/8, ST42, ST45, ST52, ST52.4, STP G38, STP G42, STPT42, STB42, STS42, STPT49, STS49 |
| Standard | ASTM A53, ASTM A106, API 5L, ASME B36.10M, DIN1626, DIN1629, DIN17175, DIN 2448, JIS G3452, JIS G3454, JIS G3455, JIS G3456, JIS G3457, JIS G3461 |
| Section Shape | Round |
| Size Range | Outer Diameter 219.1mm–3620mm (Pipe Size 1/2″–32″) |
| Wall Thickness | SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS, DIN/JIS standard thickness |
| Length | 5.8m, 6m, 11.8m, 12m or as per customer requirements |
| Technique | SSAW (Spiral Submerged Arc Welded) / Hot Rolled Based |
| Surface Treatment | Black painting, black varnish, transparent oil, hot galvanized, 3PE, epoxy coating, BE, PE |
| Ends | BE (Beveled), PE (Plain End) |
| Tolerance | ±1% |
| Application | Low and middle pressure fluid pipeline, boiler, petroleum and natural gas industry, drilling, chemical, water transportation systems, building industry, machinery |
| MOQ | 5 Tons |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Petroleum & Natural Gas | API 5L X42–X65 grade SSAW pipes for transmission pipelines, gathering lines, and distribution networks |
| Water Infrastructure | Large diameter SSAW spiral steel pipe for municipal water supply, industrial cooling systems, and wastewater conveyance |
| Building & Construction | Structural columns, piling foundations, and scaffold support systems in commercial and industrial buildings |
| Chemical & Industrial | Process piping for chemical plants, boiler feed lines, and low-pressure steam distribution |
| Machinery | Conveyor structures, hydraulic cylinder bodies, and mechanical component fabrication |
Where Material Traceability Decides Project Acceptance
Single-source mill certification eliminates the gap between raw material supplier and fabricator.
When EPC firms source SSAW spiral steel pipe from China, fragmented procurement creates material certification gaps — the fabricator sources steel from third parties, and heat number traceability breaks down. Project inspectors reject batches without complete mill test certificates linking chemical composition to mechanical properties. Our vertically integrated facility produces raw steel and fabricates finished SSAW spiral steel pipe under one quality system, ensuring every pipe carries full documentation from melt to final inspection. [NEED_CITE: material traceability requirements in API 5L pipeline specifications]
Matching Large-Diameter SSAW to Infrastructure Projects
Municipal water authorities and EPC contractors specify large-diameter SSAW spiral steel pipe (OD 1000mm–3620mm) for transmission mains because the spiral weld geometry distributes stress more evenly than longitudinal seams under internal pressure. For petroleum transmission lines, API 5L grades X42 through X65 provide the yield strength margin required by design codes while maintaining weldability in field conditions. Our production lines form and weld SSAW spiral steel pipe to precise dimensional tolerances, ensuring field fit-up during installation without costly rework.
Engineering Compliance and Certification Requirements
Infrastructure projects across different regions demand specific standard compliance — EN standards for European markets, ASTM/API for North American and Middle East projects, JIS/GOST for Asian specifications. Our SSAW spiral steel pipe production conforms to multiple international standards simultaneously, with certified welding procedures (WPS/PQR) and qualified welders meeting AWS and EN requirements. Third-party inspection agencies conduct stage-by-stage verification from material procurement through final coating application. [NEED_CITE: EN 10219 structural hollow section compliance for construction projects]
Steel Grade Selection and Spiral Welding Process
The SSAW process forms steel coil into a helical shape and welds the seam using submerged arc welding from both inside and outside, creating a continuous spiral joint that distributes stress across the pipe circumference. This geometry allows production of large diameters (up to 3620mm) from narrower coil widths, reducing material waste compared to seamless alternatives. Steel grade selection depends on service conditions — Q235 and ST37 grades suit low-pressure water systems, while API 5L X52–X65 grades provide higher yield strength for gas transmission pipelines operating at elevated pressures. Surface treatment selection (3PE coating, epoxy, or hot-dip galvanizing) addresses specific corrosion environments — 3PE provides mechanical protection plus cathodic disbondment resistance for buried pipelines, while epoxy coatings suit internal linings for potable water service.
Hidden Costs of Incorrect Grade Specification
Specifying the wrong steel grade or accepting pipes without proper certification creates downstream costs that far exceed initial price differences. Material substitution without engineering approval voids design calculations and triggers project rejection during inspection. Pipes with incomplete mill test certificates face customs delays or outright rejection at destination ports. Negative tolerance abuse reduces actual wall thickness below design minimums, compromising pressure ratings and creating structural safety liabilities. [NEED_CITE: consequences of material non-compliance in pressure vessel and pipeline codes]
Why Source SSAW Spiral Steel Pipe from Our Facility
Our own steel mill operates 3 production lines with 2,800+ raw material specifications in inventory, enabling direct control over chemistry and mechanical properties from slab to finished pipe. This vertical integration eliminates the markup and quality uncertainty of third-party material sourcing. Every SSAW spiral steel pipe carries heat number traceability back to our melt shop, with complete chemical analysis and mechanical test results documented in mill test certificates. Our certified welding procedures and qualified welders meet international standards, with full documentation packages including WPS, PQR, weld maps, and coating reports. Professional loading planning addresses the complexity of oversized cargo — we engineer custom cradles and lashing systems for 3620mm diameter pipes to prevent ovality damage during ocean transit.
Documentation & Compliance
- Mill test certificate documenting API 5L X52 chemical composition and yield strength per API 5L specification, with heat number traceability to our melt shop
- Third-party inspection reports from SGS or BV covering dimensional verification, weld seam NDT testing, and coating thickness measurement
- ISO 9001 quality management system certificate covering the complete production process from raw material incoming inspection through final packaging
- Welding procedure specifications (WPS) and procedure qualification records (PQR) demonstrating compliance with AWS D1.1 and EN ISO 15614 standards
- Export documentation package including commercial invoice, packing list, bill of lading, and certificate of origin for customs clearance
Packaging, Loading & Delivery
- SSAW spiral steel pipe bundled with high-tensile steel strips at intervals calculated for the specific diameter and wall thickness, preventing bundle deformation during handling
- Beveled ends protected with plastic caps to preserve weld preparation geometry and prevent moisture ingress during ocean transit
- 3PE coated pipes wrapped with UV-stabilized polyethylene film to protect the coating from mechanical damage during loading and transport
- Custom loading plans for 3620mm diameter pipes using engineered cradles and dunnage to maintain roundness and prevent ovality exceeding ±1% tolerance
- Heat number and steel grade stenciled on each pipe at 1-meter intervals for field identification and traceability verification
- FOB, CIF, and CFR delivery terms available with professional oversized cargo booking and port-to-site logistics coordination
Initiating Your SSAW Spiral Steel Pipe Inquiry
Submit project specifications including outer diameter, wall thickness, steel grade, quantity, and destination port to receive a detailed quotation with production timeline and mill test certificate sample. Our engineering team reviews drawings for custom fabrication requirements and provides shop drawing coordination for complex projects. Confirm certification requirements and third-party inspection scope before contract signing to ensure compliance with project specifications.
Frequently Asked Questions
Q: What is the difference between API 5L and ASTM A53 grades for SSAW spiral steel pipe?
A: API 5L covers line pipe grades (B, X42, X46, X52, X60, X65) designed for pressure containment in petroleum and gas transmission, with stricter chemical composition controls and mandatory hydrostatic testing. ASTM A53 covers general purpose pipe (Grade A, B) for low-pressure applications including water conveyance and structural use. Both standards are available in our SSAW spiral steel pipe production, with selection depending on service pressure and medium.
Q: How do you ensure material traceability for SSAW spiral steel pipe orders?
A: Every pipe carries a unique heat number stenciled on the surface, traceable to our melt shop records showing chemical composition, mechanical test results, and production date. Mill test certificates accompany each shipment, and third-party inspection agencies can witness testing at any production stage.
Q: What surface treatment options are available for corrosion protection?
A: We offer 3PE coating (three-layer polyethylene with fusion-bonded epoxy primer) for buried pipelines requiring mechanical protection and cathodic disbondment resistance, epoxy coating for internal linings in potable water service, hot-dip galvanizing for atmospheric corrosion protection, and black painting or varnish for temporary protection during storage and transport.
Q: Can you produce custom diameters and wall thicknesses outside standard schedules?
A: Yes, our SSAW production lines accommodate outer diameters from 219.1mm to 3620mm with wall thicknesses per customer specification. Minimum order quantity is 5 tons, and we provide engineering support for non-standard dimensions including shop drawing review and fabrication sequencing.
Q: How do you handle loading and shipping for large diameter SSAW pipes?
A: Pipes exceeding 2000mm diameter require custom engineered cradles and lashing systems to maintain roundness during ocean transit. Our loading team develops project-specific plans accounting for vessel type, port facilities, and destination handling equipment. We coordinate with specialized heavy-lift shipping agents for oversized cargo bookings.
Get Your SSAW Spiral Steel Pipe Quotation Today
Submit your project specifications — diameter, wall thickness, steel grade, quantity, and destination — to receive a detailed quotation with production timeline and mill test certificate sample within 24 hours.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
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
