DN40 Galvanized Steel Pipe for Plumbing Systems

Galvanized steel pipes are welded steel pipes with a heat-dip or electro-galvanizing coating on their surface. Galvanization can enhance the corrosion resistance of the steel pipes and extend their service life. Galvanized pipes have a wide range of applications. Besides being used as pipelines for water supply, gas, oil and other general low-pressure fluids, they are also used as oil well pipes in the petroleum industry, especially in offshore oil fields, oil pipelines in the chemical industry, oil heaters in coking equipment, condensation coolers, coal distillation oil exchangeers, bridge pile pipes, and support frames for mines and tunnels, etc.

Standard Length: 6 meters (approximately 20 feet). We offer custom cut lengths to minimize waste on your job site.

End Types:

Plain End (PE): For welding, flanging, or grooving.

Threaded & Coupled (T&C): Pre-cut threads for easy, screw-type assembly without welding.

Coating Quality: The zinc coating is smooth and adherent, exceeding the requirements of ASTM A123.

Superior Corrosion Resistance: The hot-dip galvanizing process offers complete, uniform coverage-inside and out-providing a sacrificial layer that protects the base steel from rust, moisture, and harsh environmental conditions.

High Pressure Rating: With a Schedule 40 wall thickness, this DN40 pipe is engineered to handle significant internal pressure, making it ideal for water and gas supply lines.

Durable & Long-Lasting: The metallurgical bond of the zinc coating ensures exceptional abrasion resistance and structural integrity, reducing maintenance costs and replacement frequency.

Precision Manufacturing: Each pipe is produced with consistent dimensions and high-quality control, ensuring easy installation and compatibility with standard fittings.

Certified Quality: Our production is compliant with ASTM standards. Mill Test Certificates (MTC) are available to verify chemical composition, mechanical properties, and coating quality

Plumbing Systems: Potable water distribution lines, residential and commercial plumbing.

Gas Distribution: Low-pressure natural gas and propane distribution systems.

Structural Applications: Handrails, framework for gates, protective barriers, and support structures.

Fencing Projects: As a robust horizontal rail for fencing systems.

Industrial Use: Compressed air lines, and other industrial fluid transport.

Q: Is DN40 the same as 1.5 inch pipe?
A: Yes, exactly. DN stands for 'Diameter Nominal' in metric units. DN40 is the metric designation for a 1.5 Inch NPS (Nominal Pipe Size) pipe. They are the same size.

Q: Is this pipe suitable for drinking water?
A: Yes. When manufactured to ASTM A53 and galvanized to ASTM A123 standards, it is widely approved for use in potable water systems.

Q: What is the pressure rating for the Schedule 40 version?
A: The pressure rating depends on the grade and application. For example, ASTM A53 Grade B SCH 40 pipe has a approximate pressure rating of over 600 PSI for water service. Please contact us for detailed technical data sheets.

Q: Can I get a small order for a trial?  
A: Yes, we offer flexible MOQs. We can often accommodate trial orders of 4tons. Please inquire for specific details.

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