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Light Diameter Spiral Welded Steel Pipe
For applications demanding reliable fluid or gas conveyance in constrained spaces, precision-engineered small diameter welded steel pipes are essential. These specialized pipes are distinguished by their spiral seam welding technique, which offers distinct advantages in structural integrity and production efficiency for narrow-bore applications. When your project specifications call for a Small Size Spiral Welded Pipe, it is crucial to select a product that balances strength with dimensional accuracy. Similarly, a Small Bore Spiral Welded Tube is often the preferred choice for instrumentation lines, hydraulic systems, and compact structural components due to its uniform wall thickness and consistent weld quality. The manufacturing process for a Small Caliber Spiral Steel Pipe involves forming a continuous helical weld, which distributes stress more evenly along the pipe's length compared to longitudinal seams. For the most demanding space-limited installations, a Mini Diameter Spiral Welded Pipe provides an optimal solution, offering high performance in a minimal footprint without compromising on pressure ratings or durability.
The Light Diameter Spiral Welded Steel Pipe represents a pinnacle of modern metallurgical engineering tailored for efficiency and performance. Its defining characteristic is the helical seam, created by continuously forming and welding steel strip at an angle. This method allows for the production of long, continuous lengths of pipe from narrower coils of steel, which is particularly efficient for smaller diameters. The spiral weld itself contributes to a more balanced structure, often resulting in improved ovality and straightness tolerances critical for small-bore applications. Key product parameters for Light Diameter Spiral Welded Steel Pipe are detailed below to assist in specification and selection.
Core Specifications
- Manufacturing Standard: API 5L, ASTM A139, ASTM A252, EN 10219, or customer-specific requirements.
- Welding Process: Submerged Arc Welding (SAW) for superior seam quality and penetration.
- Steel Grade: Available in grades including but not limited to A, B, X42 to X70, and structural grades like S235JR, S355JR.
- End Finish: Plain end, beveled end, or threaded and coupled as per application needs.
- Surface Treatment: Bare, black, varnished, or external/internal polyethylene/ epoxy fusion bonded coating.
- Primary Applications: Piling, structural supports, fencing, mechanical tubing, irrigation systems, and utility conduits.
Detailed Dimensional & Technical Parameters
| Parameter | Range / Specification | Notes |
|---|---|---|
| Outside Diameter (OD) | 6" (168.3 mm) to 24" (609.6 mm) | Specialized production can cater to diameters outside this standard range. |
| Wall Thickness | 3.2 mm to 12.7 mm | Thickness is precisely controlled to ensure consistent pressure capacity. |
| Pipe Length | 6 meters to 24 meters (standard) | Custom double random lengths are available upon request. |
| Tolerance (OD) | ± 0.75% or ± 1.0% | Strict adherence to ASTM, API, or EN standard tolerances. |
| Tolerance (Wall Thickness) | ± 10% or ± 12.5% | Dependent on the specified manufacturing standard. |
| Yield Strength (Min) | 241 MPa to 517 MPa | Varies according to steel grade (e.g., Gr B: 241 MPa, X52: 359 MPa). |
| Tensile Strength (Min) | 414 MPa to 760 MPa | Corresponds with the specified grade and heat treatment. |
| Hydrostatic Test Pressure | As per standard or customer requirement | Typically 80% of specified minimum yield strength (SMYS) for a duration of 5+ seconds. |
| Chemical Composition | C, Mn, Si, P, S, etc., as per grade | Composition is rigorously tested to ensure weldability and mechanical properties. |
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