Galvanized Pipe: Superior Corrosion Resistance

1.Product Introduction

A galvanized pipe is a metal pipe manufactured by coating a steel pipe with a protective zinc layer, typically through hot-dip galvanizing or electro-galvanizing processes. The zinc layer acts as a barrier, isolating the steel from air and moisture, thereby significantly enhancing the pipe's corrosion resistance, rust-proof performance, and service life. Depending on the process, it can be categorized into hot-dip galvanized pipes (thicker zinc coating, higher durability) and electro-galvanized pipes (smoother surface, uniform coating). Galvanized pipes are widely used in construction, municipal engineering, agricultural irrigation, water/gas transportation, and other fields.

2. Sizes

· Diameter:

· We offer a wide range of diameters. Standard sizes start from 1/2 inch (12.7 mm) and go up to 12 inches (304.8 mm). These diameters are suitable for various applications, from small - scale plumbing in residential buildings to large - scale industrial pipelines.

· Custom diameters can also be arranged upon request to meet specific project requirements.

· Wall Thickness:

· The wall thickness varies according to the diameter and the intended use of the pipe. For smaller diameter pipes used in general plumbing, the wall thickness may range from 0.065 inches (1.65 mm) to 0.145 inches (3.68 mm).

· Larger diameter pipes for industrial or structural applications can have wall thicknesses from 0.25 inches (6.35 mm) and above, ensuring they can withstand high pressures and heavy loads.

· Length:

· Pipes are commonly available in lengths of 6 feet (1.83 m), 10 feet (3.05 m), and 20 feet (6.1 m).

· Similar to diameters, custom lengths can be provided to minimize waste and optimize installation in different projects.

3. International Standards
Our galvanized pipes comply with several international standards:

· ASTM A53: This American Society for Testing and Materials standard covers both seamless and welded steel pipes for mechanical and pressure - containing applications. Pipes meeting this standard must pass strict tests regarding dimensions, mechanical properties, and coating thickness.

· EN 10255: An European standard, it specifies the technical delivery conditions for non - alloy and alloy steel tubes suitable for use in pressure purposes. Our products meet the requirements for chemical composition, mechanical properties, and surface quality as defined in this standard.

· ISO 3183: This International Organization for Standardization standard is related to petroleum and natural gas industries - Steel pipes for pipeline transportation systems. Our galvanized pipes can meet the relevant criteria in terms of strength, toughness, and corrosion resistance when used in such applications.

4. Characteristics

· Corrosion Resistance: The zinc coating acts as a sacrificial anode. When exposed to the environment, the zinc corrodes first, protecting the underlying steel. This makes galvanized pipes highly suitable for both indoor and outdoor use, even in harsh conditions such as high humidity areas, near the sea where there is salt in the air, or in industrial settings with chemical exposure.

· High Strength: Made from quality steel, galvanized pipes retain the inherent strength of the base material. They can withstand significant internal pressure in fluid - carrying applications and external loads in structural applications.

· Good Formability: Galvanized pipes can be easily cut, bent, and threaded using common tools. This property simplifies installation and allows for customization on - site according to the project's needs.

· Long Service Life: Due to their corrosion resistance and strength, galvanized pipes have a long service life. They can last for decades with proper installation and maintenance, reducing the need for frequent replacements and associated costs.

5.Applications

Construction

Scaffolding, structural supports, handrails.

Plumbing & Utilities

Water supply, gas distribution, drainage systems.

Agriculture

Irrigation systems, greenhouse frames, fencing.

Industrial

Cable conduits, machinery parts, oil/gas pipelines.

6.SKY STEEL GROUP Steel Pipe Company Information

SKY STEEL GROUP is a premier manufacturer of high-quality galvanized steel pipes. We specialize in providing durable, corrosion-resistant solutions for construction, infrastructure, and industrial applications worldwide.
Our products meet rigorous international standards, including ASTM and ISO certifications. Through advanced manufacturing and strict quality control, we ensure superior performance and reliability in every pipe.
We are committed to delivering exceptional value, competitive pricing, and reliable service to our global customers. Trust us for your steel pipe needs.
Quality. Reliability. Global Partnership.

7. FAQ

Q1. What is the difference between hot-dip and pre-galvanized pipes?

A1.Hot-dip: Submerged in molten zinc for full coverage (thicker coating, better protection).

Pre-galvanized: Zinc-coated before fabrication (thinner layer, lower cost).

Q2. How long do galvanized pipes last?

A2.50+ years in normal conditions; 20–30 years in coastal/high-salinity areas.

Q3. Can galvanized pipes be welded?

A3.Yes, but requires special techniques to avoid zinc fume toxicity (ventilation recommended).

Q4. Are your pipes certified for potable water?

A4.Compliant with NSF/ANSI 61 for safe drinking water transport.

Q5. Do you offer custom sizes and coatings?

A5.Yes! We provide custom diameters, lengths, and zinc thicknesses (e.g., 120g/m² for extra protection).

Q6. What’s the price per ton?

A6.Contact us for real-time quotes (varies by size, quantity, and destination).

Q7.Why Choose Us?

A7.✔ Factory-direct prices (no middlemen).

✔ Mill test certificates (MTC) and SONCAP/ISO 9001 compliance.

✔ 24/7 customer support for technical queries.