Galvanized Round Pipes

5-inch Galvanized Round Pipe

5-inch (140 mm) large-diameter galvanized round pipe for municipal drainage, steel structural purlins, and heavy infrastructure.

Specifications

Size 5 inch (140 mm OD)
Wall Thickness 1.5 – 3.5 mm
Standard GB/T 3091
Zinc Coating High-quality galvanized
Length 6 m
Packaging Standardized bundling for large-volume supply
Product Details

Description

Product Overview This 5-inch galvanized steel round pipe is one of the main pipe materials used in industrial and infrastructure fields, offering a cost-effective option suitable for large-scale load-bearing applications.

With an outer diameter of approximately 140 mm, it is made of high-quality galvanized steel strip through high-precision high-frequency welding, resulting in a uniform and bright zinc layer. The combination of a large diameter and a reasonable wall thickness (1.5–3.5 mm) gives it strong load-bearing capacity.

Applications - Municipal drainage project main pipes - Steel structural purlins in factories - Agricultural irrigation main pipes - Heavy equipment frame components

Manufacturing

Galvanizing Process

Our galvanized round pipes undergo a comprehensive hot-dip galvanizing process. The process includes chemical cleaning (alkaline degreasing and inhibited acid pickling), flux treatment, immersion in a 445–455°C molten zinc bath, and controlled cooling.

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