Spiral Submerged Arc Welded (SSAW / HSAW) Pipe is a large-diameter welded steel pipe manufactured using spiral forming and submerged arc welding technology. It is widely used in oil and gas transportation, water supply systems, structural engineering, and large-scale pipeline projects.
Material Type :
Carbon SteelOuter Diameter Range :
219mm – 3000mmWall Thickness Range :
5.0mm – 25.4mmCustomizable :
YesOrder(MOQ) :
2TSpecifications
Spiral submerged arc welded pipes are produced by spirally forming steel coils into a cylindrical shape and welding the seam using the submerged arc welding process. This manufacturing method allows the production of large-diameter pipes with stable weld quality and strong structural integrity.
The SSAW or HSAW process provides high welding strength, deep weld penetration, and reliable joint performance, ensuring that the pipes can withstand high pressure and demanding working conditions. The spiral forming process also allows flexible diameter production while maintaining consistent pipe quality.
These pipes are commonly manufactured from carbon steel coils and structural steel materials, and they can be supplied with additional treatments such as anti-corrosion coating, surface finishing, or heat treatment depending on project requirements.
Due to their large diameter and excellent mechanical properties, spiral submerged arc welded pipes are widely used in long-distance oil and gas pipelines, water transmission systems, bridge construction, piling projects, and large infrastructure engineering. Their strength, durability, and cost efficiency make them an important material for modern pipeline construction.
Spiral Welded Steel Pipe is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
| Grade | Grade Equivalent | Mechanical Properties | Size Range | Chemical Composition (Typical, %) |
|---|---|---|---|---|
| API 5L Gr.B | API 5L Grade B | Tensile ≥414 MPa
|
OD 219–3000 mm
|
C≤0.28
|
| API 5L X42 | API 5L X42 | Tensile ≥432 MPa
|
OD 219–3000 mm
|
C≤0.28
|
| API 5L X52 | API 5L X52 | Tensile ≥496 MPa
|
OD 219–3000 mm
|
C≤0.28
|
| API 5L X60 | API 5L X60 | Tensile ≥565 MPa
|
OD 219–3000 mm
|
C≤0.26
|
| API 5L X65 | API 5L X65 | Tensile ≥586 MPa
|
OD 219–3000 mm
|
C≤0.26
|
| API 5L X70 | API 5L X70 | Tensile ≥621 MPa
|
OD 219–3000 mm
|
C≤0.26
|
| Q235B | GB Q235B / S235JR | Tensile 375–500 MPa
|
OD 219–3000 mm
|
C≤0.22
|
| Q355B | GB Q355B / S355JR | Tensile 470–630 MPa
|
OD 219–3000 mm
|
C≤0.20
|
|
Note: If you do not find a Spiral Welded Steel Pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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Factory
FAQs
Q: What types and standards of carbon steel do you mainly supply?
A: We mainly supply a wide range of carbon steel products including seamless and welded steel pipes, steel plates, coils, and bars. Common carbon steel grades include A36, A106, A53, API 5L, and S355, which are widely used in construction, machinery, and pipeline engineering. All carbon steel products comply with international standards such as ASTM, API, EN, and JIS. We can also provide corresponding material test certificates (MTC) and support customized specifications according to customer project requirements.
Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?
A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.
Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?
A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.
Q: What are your delivery times and logistics solutions for overseas customers?
A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.
Q: As a new customer, how do I begin cooperation? Can you provide samples for testing?
A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.
|
Note: If you do not find a Spiral Welded Steel Pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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