Galvanized Steel Pipe

Product Overview

Galvanized Steel Pipe is high-strength carbon steel tubing coated in zinc to provide long-lasting corrosion resistance. We offer both:

• Hot-dip galvanized pipes – dipped in molten zinc (~450 °C), forming a thick, molecularly bonded zinc layer

• Electro-galvanized pipes – zinc-plated using electrical current, with a smoother finish for indoor or light-duty use

Specifications at a Glance

• Standards Compliant: ASTM A53, BS 1387, GB/T 3091, DIN 2440, JIS‑G3444, EN 10240/10255

• Steel Grades: Q195, Q215, Q235, Q345, S235JR/S275JR, STK400/500

• Zinc Coating Range:

  • Hot-dip: 60–275 g/m²

  • Electro: 80–275 g/m²

• Shape & Size Options:

  • Round: Ø17–273 mm, wall thickness 0.6–12 mm

  • Square: 15–400 mm, wall 0.6–20 mm

  • Rectangular: 10×20–200×400 mm, wall 0.6–20 mm

• Lengths: 2–5.8 m standard; also available in 6 m or 12 m, custom lengths on request

 Core Advantages

1. 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 .

2. Superior Corrosion Protection
   Zinc sacrificially protects the steel, even when coating is scratched .

3. Cost-Efficient & Ready-to-Use
   More affordable than stainless steel, with no need for painting or upkeep post-installation .

4. Tough & Reliable
   The metallurgical zinc bond resists chipping, scratching, and impact damage .

5. Versatility
   Multiple shapes and sizes fit many construction, plumbing, and industrial applications.

Common Applications

1. Plumbing & Gas Lines: Long-lasting water and gas distribution, ideal for municipal and residential systems.

2. Construction & Structural Use: Widely used in scaffolding, structural frames, fencing, and handrails .

3. HVAC and Mechanical: Reliable piping for HVAC systems, fire sprinkler networks, and industrial conduits .

4. Agriculture & Outdoor Installations: Perfect for farm structures, greenhouses, outdoor supports, and marine environments .

 Available Grades & Models

• ASTM A53

  • Includes Types F (butt-welded), E (ERW), S (seamless), Grades A & B — ideal for mechanical, plumbing, gas, air, and structural applications .

• Q235 / S235JR / STK400

  • Common carbon-steel grades for strong, weldable, and formable pipes suitable for general structural and pipe-use cases.

 Why Choose Our Galvanized Steel Pipes?

• All-round corrosion protection: Sealed even around edges and inside corners .

• Built to last: Less maintenance, fewer replacements — great value over time.

• Ready to install: No painting, no priming — install and go!

• Flexible sizing: Custom shapes and lengths to fit exact project needs.

• 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.