Nickel Alloy Square Pipe and Tube

Nickel alloy square pipes and tubes are important profiles widely used in industrial structures, machinery manufacturing, and construction engineering. With their symmetrical cross-sectional shape, excellent mechanical properties, and superior corrosion resistance, they have become ideal choices in offshore engineering, petrochemical, environmental protection equipment, transportation, and architectural decoration fields. The nickel alloy square pipes and tubes supplied by us are manufactured from high-quality nickel-based alloy coils/strips through multiple precision processes including precision cold forming, high-frequency/TIG welding, weld seam treatment, solution heat treatment, and straightening/cutting to length. Featuring high dimensional accuracy, four uniform corners, smooth internal and external surfaces, and excellent mechanical properties, they are specifically designed for applications with strict requirements for structural strength, corrosion resistance, and appearance quality.

Supply Range

Side Length A × A: 10mm × 10mm – 400mm × 400mm (Larger sizes negotiable)

Wall Thickness (t): 0.8mm – 12.0mm (determined by section size)

Length (L): Random length: 3-8 meters; Fixed length: Precision cut as per customer requirements

Side Length: Tolerance ±0.3mm – ±1.0mm (depending on section size and wall thickness)

Wall Thickness Tolerance: ±0.1mm – ±0.3mm

Corner Radius: Typically ≤2 × wall thickness, can be controlled as required

Special Specification Notes:

Thin-Wall Square Tubes (t≤2mm) : For light structures, decorative parts, instrument frames

Thick-Wall Square Tubes (t≥5mm) : For load-bearing structures, heavy equipment supports

Large Size Square Tubes (A≥150mm) : For large structures, offshore engineering

Non-Standard Sizes: Square tubes with any side lengths available as per drawings

Strict Non-Destructive Testing

Every nickel alloy square pipe and tube undergoes rigorous NDT inspection:

Penetrant Testing (PT) : Detecting surface-opening defects on weld seam and base metal

Radiographic Testing (RT) : Inspecting weld seams for critical service square tubes

Ultrasonic Thickness Measurement: Verifying wall thickness uniformity

Multiple Surface Conditions Available

Pickled: Scale and welding discoloration removed, silver-white surface, suitable for general industrial applications

Polished: Internal/external surfaces polished, high finish, suitable for decorative, clean industries