Narrow Diameter Spiral Welded Tube

When precision engineering and structural integrity are paramount for applications requiring compact yet robust fluid or gas conveyance, specialized tubing solutions are essential. For scenarios demanding reliable performance within constrained spatial parameters, our range of Small Size Spiral Welded Pipe offers an ideal balance of strength and dimensional accuracy. This category is particularly crucial in industries where space optimization is critical without compromising on pressure ratings or durability. Our Small Bore Spiral Welded Tube is manufactured to exacting standards, ensuring a consistent internal diameter for smooth flow characteristics. Similarly, projects requiring high-strength, small-scale infrastructure benefit from our Small Caliber Spiral Steel Pipe, known for its excellent weld integrity and resistance to deformation. For the most space-critical applications, our Mini Diameter Spiral Welded Pipe represents the pinnacle of manufacturing precision, delivering exceptional performance in compact instrumentation, specialized machinery, and intricate system layouts.

The manufacturing process for our Narrow Diameter Spiral Welded Tube involves forming a continuous strip of high-grade steel into a helical spiral, which is then welded along the seam using advanced submerged arc welding (SAW) or high-frequency induction welding techniques. This spiral formation is key to the product's superior strength-to-weight ratio and its ability to withstand higher internal and external pressures compared to longitudinally welded pipes of similar diameter. The production is tightly controlled, with rigorous non-destructive testing (NDT) implemented at every stage to guarantee weld seam integrity, dimensional consistency, and overall material quality. The resulting Narrow Diameter Spiral Welded Tube exhibits excellent concentricity, a smooth internal surface to minimize turbulence and pressure drop, and a uniform wall thickness that is critical for predictable performance in demanding service conditions.

Key Specifications & Parameters

• Outer Diameter (OD) Range: 6 inches (168.3 mm) and below, with specialized production capabilities for diameters as low as 2 inches (50.8 mm).
• Wall Thickness (WT): Available from SCH 5S through SCH XXS, typically ranging from 1.8mm to 12.7mm, depending on diameter and steel grade.
• Material Grades: Manufactured from a variety of carbon steels (e.g., ASTM A53, A500), high-strength low-alloy steels (HSLA), and alloy steels to meet specific mechanical property requirements.
• Lengths: Supplied in standard random lengths or cut to precise customer specifications, with options for beveled ends ready for welding.
• Standards Compliance: Conforms to major international standards including ASTM, API, EN, and DIN, with full Mill Test Certificates (MTC) provided.
• Primary Applications: Instrumentation lines, hydraulic and pneumatic systems, heat exchanger tubing, structural components in compact frameworks, and specialized process piping in chemical, food & beverage, and semiconductor industries.

*Pressure ratings are indicative and vary based on wall thickness, material grade, and safety factor applied. Engineering consultation is required for specific design pressure.