Product Overview
Galvanized Steel Pipe is high-strength carbon steel tubing coated in zinc to provide long-lasting corrosion resistance. We offer both:
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Hot-dip galvanized pipes – dipped in molten zinc (~450 °C), forming a thick, molecularly bonded zinc layer
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Electro-galvanized pipes – zinc-plated using electrical current, with a smoother finish for indoor or light-duty use
Specifications at a Glance
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Standards Compliant: ASTM A53, BS 1387, GB/T 3091, DIN 2440, JIS‑G3444, EN 10240/10255
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Steel Grades: Q195, Q215, Q235, Q345, S235JR/S275JR, STK400/500
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Zinc Coating Range:
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Hot-dip: 60–275 g/m²
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Electro: 80–275 g/m²
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Shape & Size Options:
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Round: Ø17–273 mm, wall thickness 0.6–12 mm
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Square: 15–400 mm, wall 0.6–20 mm
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Rectangular: 10×20–200×400 mm, wall 0.6–20 mm
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Lengths: 2–5.8 m standard; also available in 6 m or 12 m, custom lengths on request
Core Advantages
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Longevity & Low Maintenance
A hot-dip coating endures 50+ years in typical environments and over 20 years in harsh marine areas, resisting rust and damage . -
Superior Corrosion Protection
Zinc sacrificially protects the steel, even when coating is scratched . -
Cost-Efficient & Ready-to-Use
More affordable than stainless steel, with no need for painting or upkeep post-installation . -
Tough & Reliable
The metallurgical zinc bond resists chipping, scratching, and impact damage . -
Versatility
Multiple shapes and sizes fit many construction, plumbing, and industrial applications.
Common Applications
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Plumbing & Gas Lines: Long-lasting water and gas distribution, ideal for municipal and residential systems.
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Construction & Structural Use: Widely used in scaffolding, structural frames, fencing, and handrails .
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HVAC and Mechanical: Reliable piping for HVAC systems, fire sprinkler networks, and industrial conduits .
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Agriculture & Outdoor Installations: Perfect for farm structures, greenhouses, outdoor supports, and marine environments .
Available Grades & Models
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ASTM A53
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Includes Types F (butt-welded), E (ERW), S (seamless), Grades A & B — ideal for mechanical, plumbing, gas, air, and structural applications .
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Q235 / S235JR / STK400
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Common carbon-steel grades for strong, weldable, and formable pipes suitable for general structural and pipe-use cases.
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Why Choose Our Galvanized Steel Pipes?
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All-round corrosion protection: Sealed even around edges and inside corners .
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Built to last: Less maintenance, fewer replacements — great value over time.
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Ready to install: No painting, no priming — install and go!
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Flexible sizing: Custom shapes and lengths to fit exact project needs.
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Certified quality: Compliant with international standards for safety and performance.
Let’s Build Together
Need expert advice on which pipe grade, coating thickness, or size best fits your project? Drop us a message — we’re ready to provide tailored specifications and free quotes to get you moving faster!
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.