Home » Products » Galvanized Steel » Galvanized Steel Pipe/Tube » DX56D Galvanized Steel Round Pipe – Extra-Formable Zinc-Coated Tubing for Automotive & Construction Use

DX56D Galvanized Steel Round Pipe – Extra-Formable Zinc-Coated Tubing for Automotive & Construction Use

  • 1-12m or as required

  • Pre galvanized:5μm-25μm/Hot dipped galvanized:35μm-200μm

  • AiSi, ASTM, bs, DIN, GB, JIS

  • 1/2''-24''(20MM~508MM

  • Electronic Resistance Welded (ERW)

  • Hot Rolled & Cold Rolled

  • DX56D

  • 30% TT in advance, 70% TT /70% LC at sight balance before shipment

  • support

  • FOB, EXW, CIF, CFR

  • Steel

  • Polished

  • 10 TON

  • Construction

  • DOWNLOAD CATALOG.pdf

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Premium galvanized round pipes made from DX56D grade steel with excellent formability and corrosion resistance. Ideal for automotive panels, HVAC ducts, framing, and fabrication requiring deep drawing.

PRODUCT DESCRIPTION

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 PRODUCT INTRODUCTION

DX56D galvanized steel round pipe is produced from ultra-low carbon steel conforming to EN 10346, with a hot-dip zinc coating applied to enhance its corrosion resistance. DX56D is characterized by very high formability, making it especially suitable for deep drawing, bending, flanging, and roll-forming operations.

Thanks to the protective Z coating (Z40–Z275), this round pipe resists rust and environmental wear, making it a long-lasting solution for both indoor and outdoor applications.

Grade DX56D+Z (EN 10346)
Zinc Coating Z60 – Z275 g/m² (customizable)
Yield Strength ≤ 120 MPa
Tensile Strength 270 – 350 MPa
Elongation (L₀ = 80mm) ≥ 36%
Formability Excellent (suitable for deep drawing & forming)
Weldability Excellent for resistance and spot welding
Outer Diameter 10mm – 219mm
Wall Thickness 0.5mm – 4.0mm
Length 1000mm – 8000mm or custom
Surface Hot-dip galvanized (dry, oiled, or passivated)
galvanized round tubing

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 APPLICATION

DX56D galvanized steel round pipes are widely used in sectors that demand high forming performance and strong anti-corrosion capabilities. Typical application fields include:

  • Automotive industry – inner door panels, exhaust systems, structural tubing

  • HVAC systems – air ducts, ventilation pipes

  • Construction & framing – lightweight steel frames, piping supports

  • Furniture manufacturing – tubular frames, desk & chair structures

  • Electrical conduit systems – cable routing, protection in moist environments

  • Home appliance industry – outer housing, brackets, and tubing

Its superior ductility and surface quality make DX56D a preferred material for precision parts requiring tight bending radii and smooth surface finishing.


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 PRODUCT MECHANICAL PROPERTIES

  • Yield strength (Rp0.2): ≥140 MPa

  • Tensile strength (Rm): 270–420 MPa

  • Elongation A80: ≥38%

  • Vickers hardness (typical): ≤130 HV

  • Bending performance: 180° crack-free bending can be achieved

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 CHEMICAL COMPOSITION

C (carbon) ≤0.08%
Si (silicon) ≤0.03%
Mn (manganese) ≤0.50%
P (phosphorus) ≤0.025%
S (sulfur) ≤0.020%
Al (aluminum) ≤0.015% 

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 PRODUCT PRODUCTION PROCESS

The production process includes hot-rolled or cold-rolled DX56D steel strip uncoiling → cleaning and degreasing → pickling → continuous annealing → hot-dip galvanizing → air knife zinc control → passivation/oiling treatment → forming → high-frequency welding → cutting to length → end treatment → finished product inspection and packaging. The entire process strictly controls the uniformity of zinc layer adhesion and the dimensional accuracy of the finished product to ensure stable product quality and long service life.

galvanized round pipe

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Foshan Shunbei Ronghang Metal Manufacturing Co., Ltd. established in 2008, specializes in the production of carbon steel, including alloy steel plate, galvanized steel plate, color coated steel coil, cold rolled steel plate.

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