20 gi galvanized seamless saw erw welded c steel grade pipes

$650.00 - $1,020.00
Min. Order
5 Tons
Company Information

Hebei Chengyuan Pipe Industry Group Co., Ltd.

CN Manufacturer, Trading Company
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Quick Details

Port: Tiajin Xingang
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability: 10000 Ton/Tons per Month
Standard: ASTM,API
Standard2: ASTM A106-2006,ASTM A53-2007,ASTM A213-2001,ASTM A333-2005,ASTM A179-1990,API 5CT,API 5L
Grade Group: API J55-API P110,10#-45#,ST35-ST52
Grade: API J55,10#,20#,45#,St37,St52,St35.8
Thickness: 0.6 - 60 mm
Section Shape: Rectangular
Outer Diameter: 219-3020mm
Place of Origin: Hebei, China (Mainland)
Application: Structure Pipe
Technique: ERW
Certification: API
Surface Treatment: black paint
Special Pipe: API Pipe
Alloy Or Not: Is Alloy
Packaging Detail: Plastic caps on both ends, Steel bundle, Woven bag or acc. to customers&#39; request.

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20 gi galvanized seamless saw erw welded c steel grade pipes

Hebei Chengyuan Pipe Industry Group Co., Ltd

Welded steel pipe with hot dip or galvanized layer on the surface of galvanized steel pipe. Galvanizing can increase the corrosion resistance of steel pipe and prolong its service life. Galvanized pipes are widely used in petroleum industry, especially in offshore oil fields, oil wells, pipelines, oil heaters, condensation coolers, coal distillation oil wash exchangers, trestle pipe piles and support pipes for mine tunnels.


It is often said that galvanized pipe, the kind of iron pipe used for gas and heating of galvanized pipe is also galvanized pipe. Galvanized pipe is used as water pipe. After several years of use, a large amount of rust scale is produced in the pipe. The yellow water not only pollutes the sanitary ware, but also contains bacteria that grow on the non-smooth inner wall. The rust causes the excessive content of heavy metals in the water, which seriously endangers human health.

Rust removing method

1. First, the surface of steel is cleaned by solvent, and the organic matter on the surface is removed.

2. Then use tools to remove rust (steel brush), loose or inclined scale, rust, welding slag, etc.

3. Use pickling method.

Galvanizing is divided into hot and cold plating, hot plating is not easy to rust, cold plating is easy to rust.