Small Caliber Spiral Steel Pipe

The demand for high-quality, durable, and precisely engineered piping solutions in modern construction and manufacturing is paramount. When specific applications call for reduced flow diameters without compromising on strength or longevity, Small Size Spiral Welded Pipe emerges as the optimal choice. This specialized piping is manufactured using a continuous helical weld, a process that inherently distributes stress more evenly along its length compared to longitudinal seams. This structural advantage is critical for systems handling pressure, vibrations, or structural loads. For projects requiring even more compact conduits, such as intricate instrumentation lines or compact mechanical assemblies, a Small Bore Spiral Welded Tube offers superior performance. The spiral weld seam contributes significantly to the overall hoop strength, making these tubes exceptionally resistant to internal pressure and external impacts. Industries ranging from automotive and aerospace to specialized industrial machinery often seek these precise components. For applications where space is at an absolute premium, a Mini Diameter Spiral Welded Pipe provides the necessary robustness in a minimal footprint, ideal for compact heat exchangers or specific hydraulic circuits. Similarly, when design parameters dictate stringent diameter limitations, a Narrow Diameter Spiral Welded Tube ensures reliable fluid or gas transmission where traditional pipes cannot fit, all while maintaining the integrity expected from spiral-welded construction.
The Small Caliber Spiral Steel Pipe is defined by a rigorous set of technical parameters that guarantee its performance and suitability for demanding applications. The manufacturing process begins with high-grade steel coils, which are cold-formed into a continuous spiral. The key specifications are detailed below to provide a clear understanding of its capabilities.

Key Product Parameters & Specifications

• Diameter Range: From 6 inches (DN150) down to 2 inches (DN50), catering to precise flow requirements.
• Wall Thickness: Available from 3.2mm to 12.7mm, allowing for customization based on pressure ratings and structural needs.
• Material Grades: Commonly produced from ASTM A36, A53 Grade B, API 5L Grade B, and stainless steel grades like 304/316 for corrosive environments.
• Length: Standard single random lengths of 20ft to 40ft, with double random and longer lengths available upon request.
• Welding Standard: The helical seam is welded following standards such as AWS D1.1 or ASME Section IX, ensuring weld integrity.
• Surface Treatment: Options include black (mill finish), painted (red oxide, primer), hot-dip galvanized, or polyethylene coated for external protection.
• Tolerance: Strict adherence to diameter (±0.5%), wall thickness (±10%), and ovality as per ASTM or API specifications.