erw hot dip galvanized steel pipes

Date:2023-09-01View:418Tags:erw hot dip galvanized steel pipes,Hot Dip Galvanized Pipe,erw pipe
ERW (Electric Resistance Welded) hot dip galvanized steel pipes are a Hot Dip Galvanized Pipe
Hot-dip galvanizing (HDG), as referenced is the process of dipping fabricated steel into a kettle or vat of molten zinc.

Hot-dip galvanizing (HDG) is the process of coating iron, steel or ferrous materials with a layer of zinc. This done by passing the metal through molten zinc at a temperature of 860°F (460°C) to form zinc carbonate (ZNC03). Zinc carbonate is a strong material that protects steel and can prevent corrosion in many circumstances. Hot-dip galvanizing can be carried out cheaply and in large batches.
The process of hot dip galvanization involves immersing the carbon steel pipes or tubes into a bath of molten zinc. This results in a protective zinc coating being applied to the surface of the pipe, providing enhanced corrosion resistance.
The use of hot dipped galvanized steel ensures that these pipes have a long lifespan even in harsh environments. The molten zinc coating acts as a barrier against corrosion, protecting the underlying carbon steel from rusting.

ERW hot dip galvanized steel pipes are widely used for their structural strength and corrosion resistance. They provide an effective solution for applications where durability is essential, making them suitable for a range of industries and construction purposes.

In addition to this, galvanized pipe also provides:
Lower cost than stainless steel
Lowest long-term cost
Reliable performance
Excellent resistance to mechanical damage

erw hot dip galvanized steel pipeserw hot dip galvanized steel pipes


ERW hot dip galvanized steel pipes are often manufactured according to industry standards such as BS 1387 and API Spec 5CT. They come in various shapes and sizes, including rectangular pipes and socketed steel tubes. A common size for these pipes is 150 x 150 mm.

API SPEC 5CT

Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Casting API 5CT Ø48.3~273 x WT2.77~11.43 J55, K55, N80, L80
Tubing API 5CT Ø48.3~273 x WT2.77~11.43 J55, K55, N80, L80, H40

API SPEC 5L

Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Line Pipes API 5L Ø60.3~273.1 x WT2.77~12.7 A25, A, B, X42, X46, X52, X56, X60, X65, X70, X80
ASTM / ASME

Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Electric-Resistance-Welded Steel Pipes ASTM A135 Ø42.2~114.3 x WT2.11~2.63 A
Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes ASTM A178 42.2-114.3 x 2.11-2.63 A, C, D
ERW and Hot-dip Galvanized Steel Pipes ASTM A53 Ø21.3~273 x WT2.11~12.7 A, B
Pipes for Piling Usage ASTM A252 Ø219.1~508 x WT3.6~12.7 Gr.2, Gr.3
Tubes for General Structural Purpose ASTM A500 Ø21.3~273 x WT2.11~12.7 Gr.2, Gr.3
Square Pipes for General Structural Purpose ASTM A500 25 x 25~160 x 160 x WT1.2~8.0 Carbon Steel


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