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Cost-Effective galvanized pipe | Bulk Pricing on Iron Tubes

Cost-Effective galvanized pipe | Bulk Pricing on Iron Tubes

$580.00 SGD
$580.00 SGD
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Galvanized Steel Pipe Product Detail Page

Product Specifications

Parameter Details
Material Low-carbon steel (Q195, Q235, Q345), galvanized coating (30–600 g/m² zinc)
Standards ASTM A53, A795, BS1387, EN39, API 5L, SGCC, DX51D
Diameter 2 inch galvanized pipe 20 ft price: 2" (60.3 mm) to 6" (168.3 mm)
Wall Thickness 0.5–2.5 mm (customizable up to 6.0 mm for heavy-duty applications)
Length Standard: 6 m, 12 m; Custom: 1–12 m (e.g., cutting galvanized steel pipe)
Surface Finish Smooth, spangled, or matte (hot-dip galvanized)
Hardness G300–G550 (Rockwell B scale)
Coating Adherence ≥5,000 hours salt spray test compliance

Key Attributes

  1. Corrosion Resistance:

    • Hot-dip galvanized coating forms a zinc-iron alloy layer, providing 2–4× longer lifespan than electro-galvanized pipes.
    • Ideal for harsh environments (coastal, chemical, or high-humidity areas).

  2. Durability:

    • Tensile strength: 330–550 MPa (varies by steel grade).
    • Bend strength: Capable of 180° bending without cracking (for cold-formed applications).

  3. Versatility:

    • Suitable for 4 inch galvanized pipe structural frameworks, plumbing, fencing, and mechanical engineering.
    • Pre-galvanized options available for welding and fabrication.

Manufacturing Process

Stage Description
Material Prep Steel coils unrolled, flattened, and cleaned via pickling to remove oxides.
Pipe Formation Cold-rolled or ERW (Electric Resistance Welded) for seamless or welded pipes.
Galvanizing Hot-dip galvanizing: Dipped in molten zinc (450–465°C) to form alloy layers.
Quality Control Ultrasonic testing, coating thickness measurement, and hydrostatic pressure checks.

Technical Specifications

1. Tensile & Bend Strength

  • Tensile Strength: Ranges from 330 MPa (Grade Q195) to 550 MPa (Grade Q345). Higher grades (e.g., G550) are used in load-bearing structures.
  • Bend Strength: Achieves a minimum bend radius of 2.5× pipe diameter without fracture.

2. Weight Calculation

Formula for galvanized pipe weight:

  • OD: Outer diameter (mm)
  • WT: Wall thickness (mm)
    Example: 2 inch galvanized pipe (60.3 mm OD, 3.2 mm WT) weighs ~4.5 kg/m.

3. Identification Marking

  • Pipes are stamped with:
    • Manufacturer’s logo
    • ASTM standard (e.g., ASTM A53)
    • Size (e.g., 4 inch galvanized pipe)
    • Coating type (HDG for hot-dip)

4. Stainless Steel Rust Causes

Stainless steel resists rust due to a chromium-rich oxide layer. However, corrosion can occur due to:

  • Chloride Exposure: Coastal environments accelerate pitting.
  • Mechanical Damage: Scratches or welding that disrupt the oxide layer.
  • Chemical Contamination: Acids or alkalis (e.g., industrial pollutants).

Why Choose Our Galvanized Pipes?

  1. Bulk Pricing Advantage: Competitive 2 inch galvanized pipe 20 ft price with volume discounts (FOB: $670–820/ton).
  2. Custom Solutions: Precision cutting galvanized steel pipe services for tailored lengths and angles.
  3. Certified Quality: ISO, RoHS, and ASTM compliance with 5,000+ hours of salt spray testing.
  4. Global Logistics: Sea-worthy packaging and fast delivery (15–30 days worldwide).

Why Our Stainless Steel Stands Out

While galvanized pipes excel in cost-effectiveness, our stainless steel products offer unmatched longevity for specialized applications:

  1. Superior Corrosion Resistance: Chromium-nickel alloys (e.g., SUS 304/316) resist rust even in acidic or marine environments.
  2. Hygienic & Aesthetic: Ideal for food processing, pharmaceuticals, and architectural designs.
  3. Low Maintenance: No recoating required, reducing lifecycle costs.
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