National Standard Hot-Dip Galvanized Round Pipe

National standard hot-dip galvanized round pipes are hollow round steel pipes made from ordinary carbon steel round pipes through a hot-dip galvanizing process. This process gives them excellent corrosion resistance. Common specifications: 4 points, 6 points, 1 inch, 1.2 inch, 1.5 inch, 2 inch, 2.5 inch, 3 inch, 4 inch, 4.5 inch, 5 inch to 10 inch. The zinc layer formed by hot-dip galvanizing is 80-120 grams per square meter thick, uniformly adhering to the surface of the steel pipe; this zinc layer can withstand more than 1000 hours of salt spray corrosion and has a service life of more than 30 years. Compared with ordinary black steel pipes, its corrosion resistance life is extended by 5 to 10 times, significantly reducing the maintenance costs of outdoor projects.

National standard hot-dip galvanized round pipes not only possess excellent corrosion resistance but also outstanding strength and economy. Their carbon steel base material has a strength between 235-345 MPa, and the circular cross-section design achieves a more uniform stress distribution, saving 20%-30% of material compared to other shapes of steel. Furthermore, their bright zinc coating is ideal for exposed installation, eliminating the need for secondary coating treatment, thus reducing costs and improving construction efficiency. In terms of installation, these pipes are easy to weld, can be threaded, and are easy to cut, greatly enhancing construction convenience.

Xinlida Steel Pipe has extensive experience in the production of national standard hot-dip galvanized round pipes. By employing high-frequency welding technology combined with a fully automated hot-dip galvanizing production line, it ensures high weld strength and a uniform zinc layer. The production process includes three passivation treatments to enhance the product's resistance to alkaline corrosion. Each finished product undergoes drying, inspection, and fine surface treatment before packaging and shipping.

Our national standard hot-dip galvanized round pipes are available in a variety of specifications. Manufactured strictly according to national standards, the surface features a dense and uniform hot-dip galvanized layer, forming a long-lasting protective film that isolates the pipes from air and moisture corrosion, effectively extending their service life. The products are dimensionally accurate, with full wall thickness, smooth inner and outer walls, stable mechanical properties, and resistance to pressure and deformation, making installation convenient. Choosing Xinlida Steel Pipe Company's national standard hot-dip galvanized round pipes not only provides one-stop purchasing services but also 24/7 after-sales support and real-time tracking, making your procurement process worry-free and reliable.

Why choose Xinlida Steel Pipes?

• Thicker Zinc Coating: The zinc coating has an average thickness exceeding 120 grams per square meter, 20%-30% thicker than ordinary products, providing more durable corrosion protection.

• Advanced Technology: Fully automated production line, small dimensional tolerances, and no incomplete weld seams.

• Price Advantage: Directly from the source factory, saving 10%-20% on costs for the same specifications.

• Export Experience: Successfully completed numerous outdoor projects in Africa and Southeast Asia, with a high customer repurchase rate.

Frequently Asked Questions（FAQ）

Q1: What is the difference between galvanized round pipes and ordinary black pipes?

A: Galvanized round pipes use a hot-dip galvanized coating, which improves corrosion resistance by 5 to 10 times, making them suitable for outdoor use; black pipes are only suitable for short-term indoor use.

Q2: How to choose the zinc coating thickness?

A: For coastal or humid environments, a density of 120 g/m² or higher should be selected; generally, 80 g/m² is sufficient for outdoor use. We will provide free advice based on specific projects.

Q3: Do you support internal plating or special zinc coatings?

A: Fully supported. Internal or external plating processes can be used for drinking water transportation; customization is welcome upon request.

Q4: What documents are required for export?

A: A complete set of documents, including material certificates, zinc coating test reports, certificates of origin, and SGS test results.

National standard hot-dip galvanized round pipes are the best choice for reliable corrosion protection in outdoor projects! Contact us now for customized solutions, quotations, and sample support. Our professional team is available 24/7.

We are committed to producing high-quality national standard hot-dip galvanized round pipes, using Q235B as the mainstream material, with seamless/welded pipe processes available. We employ fully automated welding technology combined with hot-dip galvanizing. This ensures uniform zinc layer thickness and excellent corrosion resistance. We offer a variety of product specifications and can customize products to meet specific customer needs.

For national standard hot-dip galvanized round pipes, please feel free to contact us for the latest quotation, free samples, and professional engineering solutions. We support global export business and look forward to cooperating with you!