Large Pipe Fittings

Our Large Pipe Fittings are designed for high-capacity, large-diameter fluid lines. Made from 5083 or 6061 aluminum, they are produced using specialized large CNC bending and flaring machines. Standard pipe diameters range from 6 mm to 60 mm, with large sizes from 40 mm to 60 mm. Maximum bending capacity is φ60 mm with 3 mm wall thickness, and bending radius is ≥5× pipe diameter. Wall thickness uniformity deviation is ≤±8% (EN 755-2), and maximum inner diameter reaches 56 mm. Tensile strength is ≥275 MPa for 5083-H112. Hard anodizing ensures salt spray resistance exceeding 1000 hours, making these fittings ideal for offshore and marine environments. Maximum working pressure is 10 MPa (1500 psi).

A 56 mm inner diameter fitting offers 3.5× the flow of a 30 mm pipe, making it perfect for hydraulic system main return lines, cooling water headers, and other applications where low flow resistance is critical. We use 5083-H112 aluminum for superior corrosion resistance, tensile strength above 275 MPa, and wall thickness designed for a 4× safety factor. Hard anodizing adds long-term durability in harsh environments.

Ends can be machined for flanges, ferrules, or welds. Supported standards include SAE J518 and DIN 2633 flanges. Flange face flatness ≤0.1 mm, and bolt hole position accuracy ≤φ0.3 mm. Seal grooves comply with ISO 3601-2 for O-rings. Our R&D team can develop fittings based on your drawing or sample. OEM and ODM support is available. We manage quality from design to mass production, ensuring dimensional accuracy, consistent performance, and on-time delivery.

Use these fittings for large hydraulic system main return lines, ship seawater cooling headers, industrial water treatment circulation pipes, and mining machine central lubrication lines. Large pipe fittings are a core product in our tube connector line, delivering reliability and value for demanding industries.

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