Galvanized seamless pipe

DX51D Galvanized Steel Pipe: High-Formability Corrosion-Resistant Solution for Low-Temperature Applications.‌ ‌Engineered for Precision Fabrication: Construction, HVAC & Food Processing‌ DX51D galvanized steel pipe combines ‌low melting point (1,425–1,535°C)‌ with superior zinc adhesion (Z275 coating), achieving 10–15% higher formability than standard galvanized steel. Its ‌micro-alloyed composition‌ ensures 2,000+ hours of salt spray resistance (ASTM B117), making it ideal for cold-forming applications like agricultural equipment, ventilation ducts, and food processing machinery exposed to -30°C environments.
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Product Introduction

‌DX51D Galvanized Steel Pipe: High-Formability Corrosion-Resistant Solution for Low-Temperature Applications.‌

‌Engineered for Precision Fabrication: Construction, HVAC & Food Processing‌

DX51D galvanized steel pipe combines ‌low melting point (1,425–1,535°C)‌ with superior zinc adhesion (Z275 coating), achieving 10–15% higher formability than standard galvanized steel. Its ‌micro-alloyed composition‌ ensures 2,000+ hours of salt spray resistance (ASTM B117), making it ideal for cold-forming applications like agricultural equipment, ventilation ducts, and food processing machinery exposed to -30°C environments.


‌Certifications & Key Advantages‌

  • ‌EN 10346 & ASTM A653 Certified‌: Compliant with JIS G3302 and GB/T 13912 standards.
  • ‌Cost Efficiency‌: 40% lower welding energy vs. stainless steel 304.
  • ‌Custom Sizing‌: Thickness 0.1–300 mm (±0.15 mm), width up to 3 meters.
  • ‌MOQ 2 Tons‌: Hot-dip galvanized (HDG) finish standard; electroplating optional.

‌Technical Specifications‌

‌Mechanical Properties‌

Property Value Test Standard
Yield Strength 220–320 MPa ISO 6892-1
Tensile Strength 330–440 MPa ASTM E8/E8M
Elongation (A80) ≥22% EN ISO 6892-2
Zinc Coating 180–275 g/m² (Z275) EN 1461

‌Material Composition‌:

  • ‌Carbon (C)‌: ≤0.08%
  • ‌Manganese (Mn)‌: 0.30–0.60%
  • ‌Phosphorus (P)‌: ≤0.035%
  • ‌Silicon (Si)‌: ≤0.03%

‌Coating Details‌:

  • ‌Hot-Dip Galvanizing (HDG)‌: 50–85 µm layer (Z275-Z450 grades).
  • ‌Surface Prep‌: ISO 8501-1 Sa2.5 blast cleaning (25–50 µm profile).

‌Dimensional Tolerances‌

Parameter Tolerance
Thickness ±0.15 mm
Outer Diameter ±0.6% of nominal size
Length ±10 mm

‌Applications‌

  1. ‌Construction‌: Roof drainage systems, cable trays, and fireproof door frames.
  2. ‌Agriculture‌: Greenhouse structures, fertilizer storage tanks, and milking equipment.
  3. ‌Food Industry‌: Conveyor belts, refrigeration pipelines, and meat processing tools.
  4. ‌Energy‌: Solar panel mounts, biogas digesters, and geothermal heat exchangers.

‌Fabrication Guidelines‌

  • ‌Cutting‌: Laser/waterjet (pre-heat >100°C for HDG).
  • ‌Welding‌: Use ER70S-2 electrodes (preheat 80–120°C).
  • ‌Bending‌: Minimum radius = 2x pipe diameter (cold-formed).
  • ‌Painting‌: Apply chromate primer (5 µm) + PU topcoat (25 µm).

‌Quality Assurance‌

  • ‌Coating Adhesion‌: ASTM D3359 cross-hatch test (Class 4B rating).
  • ‌Salt Spray Test‌: 1,500+ hours (ASTM B117) for HDG pipes.
  • ‌Certifications‌: EN 10204 3.1, ISO 9001:2015, and RoHS compliance.

‌Competitive Edge‌

  • ‌Lifespan‌: 25–40 years in humid/coastal zones.
  • ‌Lead Time‌: 12–18 days (MOQ 2 tons).
  • ‌Sustainability‌: 98% recyclable with 15% lower CO₂ footprint than galvanized aluminum.

‌Logistics & Compliance‌

  • ‌Packaging‌: VCI-coated paper + steel straps (ISPM15 compliant).
  • ‌Temperature Range‌: -30°C to 250°C (HDG).
  • ‌Optional Coatings‌: Epoxy-polyester hybrid or fluoropolymer upon request.

‌Comparative Analysis‌

Material Yield Strength (MPa) Corrosion Resistance Key Applications
‌DX51D HDG‌ 220–320 High (humidity) Food processing, HVAC
Galvanized Aluminum 150–200 Moderate Aerospace interiors
Carbon Steel A53 240 Low Water supply lines

‌Request Free Samples or Technical Datasheets Today!‌
Certifications: EN, ASTM, JIS. Global shipping available.

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Supplier of various types of carbon steel

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

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