AWWA C200 Spiral Welded Steel Pipe
For water transmission and distribution systems demanding strength, durability, and cost-effectiveness, the AWWA C200 Spiral Welded Steel Pipe is the industry-preferred solution. This specification, published by the American Water Works Association, sets rigorous standards for steel water pipe manufactured using the spiral weld process. Our pipes are engineered to meet and exceed these requirements, ensuring optimal hydraulic performance and long-term reliability for municipal water mains, raw water intakes, and large-scale irrigation projects. The inherent structural advantages of spiral welding allow for efficient production of pipes with large diameters and varying wall thicknesses to suit specific pressure ratings and installation conditions. For projects requiring pipes conforming to other critical standards, we also offer a comprehensive range including API 5L Large Diameter Spiral Pipe for oil and gas transmission, ASTM A252 Spiral Piling Pipe for foundational support, Large Diameter Spiral Pipe for Dredging in marine applications, and Spiral Welded Casing Pipe for Oil And Gas.
The manufacturing process of the AWWA C200 Spiral Welded Steel Pipe begins with high-quality steel coils. A forming machine continuously bends the strip at a precise angle, creating a uniform spiral helix. The resulting seam is then welded inside and out using advanced submerged arc welding (SAW) technology, producing a consistent, high-integrity weld that is as strong as the base metal. This method provides exceptional dimensional flexibility. Key product parameters and specifications are detailed below to illustrate the capabilities and conformity of our pipe.
Key Features & Manufacturing Standards
- Standard Specification: Conforms to AWWA C200 for steel water pipe.
- Welding Process: Double-sided Submerged Arc Welding (SAW).
- Steel Grade: Typically manufactured from ASTM A139 Grade B, or other grades as specified.
- Diameter Range: From 24 inches (610 mm) up to 144 inches (3658 mm) and larger.
- Wall Thickness: Customizable, commonly from 0.25 inches (6.35 mm) to 1 inch (25.4 mm).
- Pipe Length: Standard single random lengths or tailored to project requirements.
- Protective Coatings: Available with cement mortar lining (CML) per AWWA C205, polyethylene encasement, or various external coatings like fusion-bonded epoxy (FBE).
- End Finish: Beveled ends for welding, plain ends, or fitted with flanges or couplings.
Typical Technical Specifications
| Parameter | Specification / Range | Notes |
|---|---|---|
| Standard | AWWA C200 | Governs material, manufacture, testing. |
| Material Grade | ASTM A139 Grade B, A, C | Other ASTM grades like A572 available. |
| Outside Diameter (OD) | 24" - 144" (610mm - 3658mm) | Larger diameters upon request. |
| Wall Thickness | 0.25" - 1.0" (6.35mm - 25.4mm) | Designed for internal pressure & external load. |
| Hydrostatic Test Pressure | As per AWWA C200, typically minimum 150 psi or 2x design pressure. | Ensures leak-proof integrity. |
| Yield Strength (Min) | 35,000 psi (241 MPa) for Gr. B | Provides structural safety margin. |
| Tensile Strength (Min) | 60,000 psi (414 MPa) for Gr. B | Meets mechanical property requirements. |
| Internal Lining | Cement Mortar (AWWA C205), Epoxy, etc. | Protects water quality & reduces friction loss. |
| External Coating | FBE, Polyethylene, Bituminous, or Mill Primer. | Corrosion protection for soil burial. |
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