Product Introduction

The S275 Galvanized Pipe is a robust and versatile steel piping solution engineered to meet demanding industrial and structural requirements. Made from S275 grade carbon steel, which adheres to international standards like EN 10025-2, this pipe is enhanced with a hot-dip galvanized coating that forms a durable zinc-iron alloy layer, providing superior protection against corrosion, moisture, and chemical exposure. Its high yield strength and excellent weldability make it ideal for applications such as water supply systems, gas pipelines, scaffolding, structural frameworks, and mechanical installations. The galvanized finish ensures long-term reliability in both indoor and outdoor environments, reducing maintenance costs and extending service life. Available in a wide range of sizes, from 21.3mm to 610mm in diameter and 1.8mm to 25mm in wall thickness, the pipe can be customized with beveled ends, threading, or protective caps to suit specific project needs. Certified to ISO 9001, SGS, and other quality standards, and compliant with specifications like ASTM A53 and BS 1387, the S275 Galvanized Pipe is a trusted choice for engineers and contractors seeking a cost-effective, high-performance solution for critical infrastructure projects worldwide.

About Us

Zhongxi Metal is a professional manufacturer engaged in the research, development, production, sale and service.,  is committed to providing one-stop steel procurement services for global client.

Advantages of Galvanized Pipe

1. Excellent corrosion resistance

• Zinc layer protection: The surface of the galvanized pipe is covered with a layer of zinc, forming a physical and electrochemical protective layer, which effectively isolates oxygen and moisture and prevents the steel pipe from rusting.

• Sacrificial anode protection: Even if the galvanized layer is partially damaged, the zinc will still corrode preferentially (sacrificial anode effect), protecting the steel pipe substrate from rust.

2. Long service life

• In general atmospheric environment, the service life of galvanized pipes can reach 20~50 years (depending on the thickness of the zinc layer and environmental conditions).

• Compared with ordinary steel pipes (such as black pipes), galvanized pipes have significantly improved weather resistance, reducing maintenance and replacement frequency.

3. High strength and durability

• Galvanized pipes are usually based on carbon steel or low alloy steel (such as Q235, ASTM A53 Gr.B), with high mechanical strength, suitable for load-bearing structures and pressure pipes.

• The zinc layer can also provide a certain surface hardness to reduce mechanical damage during transportation and installation.

4. High cost-effectiveness

• Low initial cost: The price of galvanized pipes is lower than that of corrosion-resistant materials such as stainless steel and copper pipes.

• Low maintenance cost: no need for frequent painting or anti-corrosion treatment, long-term use is more economical.

5. Easy to process and install

• Galvanized pipes can be cut, welded, bent and other processes (pay attention to the volatilization of the zinc layer during welding).

• Standardized specifications (such as DN15-DN600) and connection methods (threads, flanges, clamps) are easy to construct and install.

6. Environmental protection

• Zinc is a recyclable material. Galvanized pipes can be recycled after being scrapped, reducing resource waste.

• Long-term use reduces the risk of pipeline leakage and environmental pollution caused by corrosion.

We have our own Physical & Chemical Testing Center Lab to guarantee our product quality. Our test items & instrument fully meet international standards.

Applications of Galvanized Pipe

1. Construction and Structural Engineering

• Scaffolding & Support Structures: Galvanized steel pipes (such as JIS G3444 STK400/500) are widely used in building scaffolding and temporary support frames. They are corrosion-resistant and have strong load-bearing capacity.

• Steel Structure Buildings: Roof trusses, purlins, and enclosure structures (such as ASTM A53 Gr.B) used for factories and warehouses.

• Roof Drainage System: Galvanized rainwater pipes (such as EN 10255) have good weather resistance and long-term rust prevention.

2. Water Supply and Fire Fighting System

• Tap Water Pipes: Low-pressure galvanized steel pipes (such as GB/T 3091 Q235B-Z) are used for municipal water supply and water pipes in buildings (gradually replaced by PPR pipes, but old systems are still common).

• Fire Fighting Pipes: Galvanized pipes (such as ASTM A53) are used for fire sprinkler systems. They are pressure-resistant and fireproof.

3. Gas and HVAC Engineering

• Gas transmission: Low-pressure galvanized steel pipes (such as GB/T 3091) are used for natural gas and liquefied gas pipelines (must meet explosion-proof requirements).

• Heating, ventilation and air conditioning (HVAC): Galvanized air ducts (such as ASTM A53) are used for ventilation systems, which are corrosion-resistant and easy to process.

4. Agriculture and greenhouses

• Greenhouse frames: Galvanized round or square pipes (such as Q195-Z) are moisture-resistant and rust-proof, suitable for long-term outdoor use.

• Irrigation systems: Galvanized pipes are used for water pipelines, which are cheaper than stainless steel.

5. Power and communications

• Cable protection pipes: Galvanized wire casings (such as GB/T 3091) protect underground or exposed cables from corrosion and mechanical damage.

• Communication towers: Galvanized steel pipes (such as ASTM A53 Gr.B) are used for signal towers and 5G base station structures, which are highly weather-resistant.

6. Industry and machinery

• Transportation pipelines: For low-pressure fluid transportation in factories (such as compressed air and lubricating oil), galvanized pipes (such as JIS G3452 SGP-Z) are used.

• Machinery equipment frames: Galvanized square/rectangular pipes (such as EN 10305) are used for equipment brackets and guardrails.

7. Transportation and municipal facilities

• Road guardrails: Galvanized steel pipes (such as Q235B-Z) are used for highway isolation fences for long-term rust prevention.

• Street light poles & traffic sign poles: Galvanized treatment extends outdoor service life.

8. Other special uses

• Ships and docks: Some galvanized pipes are used for internal pipes of ships or dock facilities (other anti-corrosion measures are required).

• Temporary structures: detachable structures such as exhibition stands and temporary stages, galvanized pipes are easy to reuse.

Contact Us

As a leading company, Zhongxi Metal is known for our excellent product quality and professional services, providing our customers with a reliable partner. We have a global sales network that can meet the needs of customers in different countries and regions.If you need more information about us or have any other needs, please feel free to contact us. We look forward to working with you to create a better future.