Q345B Small-diameter Galvanized Square Pipe (DN15-DN32)

Product Overview

Q345B Small-diameter Galvanized Square Pipe (DN15-DN32) is a structural steel pipe made from Q345B grade steel with hot-dip galvanization for corrosion resistance.

Specifications

Material

Grade: Q345B low-alloy structural steel. Yield strength: 345 MPa minimum. Tensile strength: 470-630 MPa.

Dimensions

Nominal diameter (DN): 15 mm to 32 mm. Wall thickness: 1.0 mm to 3.0 mm. Length: Standard 6 m, customizable up to 12 m. Cross-section: Square shape with side lengths from 15 mm to 32 mm.

Galvanization

Hot-dip galvanized coating thickness: 40-60 μm average. Zinc coating mass: Minimum 275 g/m². Meets ASTM A123 or equivalent standards for corrosion protection.

Applications

Used in construction frameworks, scaffolding, mechanical structures, and water supply systems. Suitable for indoor and outdoor environments where moderate corrosion resistance is required.

Standards Compliance

Conforms to GB/T 3091 for welded steel pipes and GB/T 13912 for hot-dip galvanization. Additional certifications available upon request.

Asia Metal supports customization of different sizes and specifications for steel products. Contact us for specific requirements.