Cangzhou Hengtai Zeyuan Anti-corrosion Pipeline Co., Ltd.
Spiral Welded Steel Pipe (SSAW) Introduction
1. Product Definition
Spiral welded steel pipe is a type of welded steel pipe made from steel strip coils. The strip is helically coiled under normal temperature and welded using double-sided submerged arc welding (SAW). The weld seam is spiral-shaped, making the pipe suitable for various pressure transmission and structural applications.
2. Product Features
Wide Range of Diameters: Suitable for producing large-diameter pipes using relatively narrow strip steel.
High Strength and Pressure Resistance: The spiral seam distributes stress evenly.
Cost-Effective: More economical than longitudinal welded pipes for large diameters.
Good Welding Performance: Automatic double-sided SAW ensures stable welding quality.
Custom Lengths Available: Pipes can be cut to specific lengths as required.
3. Product Specifications
| Item | Specification Range |
|---|---|
| Nominal Diameter | DN200 - DN3000 (Φ219mm – Φ3000mm) |
| Wall Thickness | 5mm – 30mm (customizable) |
| Length | 6m – 18m (or customized) |
| Steel Grade | Q235B, Q345B, L245-L485 (API 5L), etc. |
| Welding Method | Double-sided Submerged Arc Welding (SAW) |
| Surface Treatment | Black, or anti-corrosion coatings (3PE, epoxy, etc.) |
4. Applicable Standards
| Standard Code | Standard Name |
|---|---|
| SY/T 5037 | Spiral Submerged Arc Welded Steel Pipe for Non-Pressure Fluids |
| GB/T 9711 | Steel Pipe for Pipeline Transportation Systems |
| API 5L | Line Pipe Specification (American Petroleum Institute) |
| EN 10219 | Cold Formed Structural Hollow Sections (EU Standard) |
| ISO 3183 | International Standard for Steel Line Pipes |
5. Main Applications
✅ Pipeline Transmission:
Long-distance transportation of oil and natural gas
Water supply and drainage systems
District heating pipelines
Industrial fluid transmission (chemicals, pharmaceuticals, wastewater, etc.)
✅ Structural Uses:
Steel structures in buildings and bridges
Piling pipes for ports, piers, foundations
Support pipes for tunnels and underground projects
✅ Other Uses:
Outer protection pipes for anti-corrosion and thermal insulation systems
Steel casing and sleeve pipes
6. Common Anti-Corrosion Coatings
3PE (Three-layer Polyethylene Coating): Ideal for underground or submerged pipelines.
Epoxy Coal Tar Coating: Common in drainage, sewage, and municipal water supply systems.
FBE (Fusion Bonded Epoxy): Excellent adhesion and corrosion resistance.
Hot-dip Galvanizing: Suitable for environments with high oxidation requirements.
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Keywords
Spiral Welded Steel Pipe
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Classification
Hebei Hengtai Group, 338 National Road North, Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province
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