If you are sourcing pipes for fluid transmission, scaffolding, or robust outdoor structures, you need a product that offers unbeatable durability and corrosion resistance. In the global steel market, the highest demand consistently falls on **Hot-Dipped Galvanized (HDG) Steel Pipes** manufactured to ASTM A53 and BS 1387 (EN 10255) standards.
As a leading export supplier based right in the heart of Liaocheng, Shandong—China's renowned steel manufacturing hub—we provide these top-tier galvanized pipes directly to international contractors, wholesalers, and distributors at highly competitive factory prices.
Why ASTM A53 and BS 1387?
These two standards represent the gold standard in the galvanized pipe industry.
ASTM A53 (Grade A / Grade B):This is the paramount standard in the Americas and the Middle East. It covers seamless and welded black and hot-dipped galvanized steel pipes used for mechanical and pressure applications, as well as ordinary uses in steam, water, gas, and air lines.
BS 1387 (EN 10255):Widely used across Europe, Asia, and Africa. These tubes are categorized into Light, Medium, and Heavy classes. They are heavily relied upon for scaffolding tubes, fencing, and greenhouse structural frames.
Product Specifications & Key Parameters
To meet the diverse needs of our global clients, we maintain a comprehensive production line capable of customizing every aspect of your order.
Core Technical Details:
Standard and Grade:ASTM A53 Gr.A / Gr.B, BS 1387 (Light, Medium, Heavy), EN 10255, JIS G3444.
Manufacturing Process:Electric Resistance Welded (ERW) or Seamless (SMLS).
Outer Diameter (OD):Ranging from 1/2 inch to 24 inches (21.3mm - 609.6mm).
Wall Thickness (WT):From 1.2mm up to 22mm. We supply all standard schedules including SCH 10, SCH 40, and SCH 80.
Zinc Coating Weight:This is the most crucial factor for lifespan. We offer thick, uniform zinc coatings ranging from 200g/m² to 500g/m²**, ensuring decades of protection even in harsh coastal or high-humidity environments.
Pipe Length:Standard 5.8 meters (for 20ft containers) and 6 meters / 12 meters (for 40ft containers). Custom cutting is fully supported.
Pipe Ends Processing:Plain Ends (PE):Standard straight cut.
Beveled Ends (BE):Prepared for easy welding.
Threaded Ends:With or without sockets/couplings, protected by plastic caps.
Grooved Ends:For quick assembly in fire protection systems.
Primary Applications of Our GI Pipes
Because of their heavy zinc armor, our HDG pipes are highly versatile and trusted across multiple heavy-duty sectors:
Fluid Transportation:Safe and clean transmission of low-pressure liquid, water, gas, and oil.
Construction & Scaffolding:Providing unyielding strength and rust-proof reliability for scaffolding systems and building frameworks.
Fire Protection Systems:The industry standard for indoor and outdoor sprinkler systems.
Agriculture:Highly resistant to soil moisture, making them perfect for greenhouse frames and irrigation lines.
Fencing and Handrails: Long-lasting outdoor structural support for highways, bridges, and commercial boundaries.
The Liaocheng Manufacturing Advantage
Why do international buyers choose to source from us? Location and expertise.
Being situated in Liaocheng, Shandong, gives us direct access to premium raw materials and a highly integrated local supply chain. This means shorter production times, lower overhead costs, and strict quality oversight at every step of the process. Every batch of our galvanized pipes undergoes severe hydrostatic testing and non-destructive inspection before it is packed for ocean frei