Key Considerations for Selecting Galvanized Pipes

Key Points for Selecting Chongqing Galvanized Pipes

Surface Inspection

Carefully examine the pipe's surface for smoothness

Ensure absence of zinc nodules and burrs

Premium-quality pipes typically exhibit:
• Smooth, defect-free surfaces
• Consistent silver-white coloration

Coating Quality Verification

Check for visible defects (bare spots, discoloration)

Verify uniform zinc layer distribution

Reject pipes with:
• Irregular coating patterns
• Abnormal color variations

Dimensional Compliance Check

Confirm length meets standard specifications

Measure and validate:
• Pipe diameter (OD tolerance:±0.5mm for ≤40mm pipes)
• Wall thickness (±10% of nominal thickness)

Require mill test certificates for critical dimensions   http://www.hnftsteels.com