ERW Pipe
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ERW Pipe

ERW pipe means electric resistance welded pipe, and it is a resistance welding by 10-500 kHz of high-frequency current.

The raw material of the ERW steel pipe is hot rolled steel coil made of steel billet, and the usual material is Q195, Q215, Q235, Q355 in China ERW pipe grade, which are same material with S195, S235, S355 in Europe, and SS400 in Japan. ERW steel manufacturers will cut the steel coil into strips first, the strip width is according to the perimeter of the and then shaped by mold, welding, cutting, straightening, inspecting, end smoothing, packing, and final storage or dispatch.

The are used widely in construction and infrastructure, such as scaffolding, water and gas delivery, fire control system, oil and heat delivery, and other low-pressure liquid delivery. Generally, the length of produced by the erw steel manufacturers is 6m, which can be determined according to the requirements of the buyer.

Electric Resistance Welded Steel Pipe Flow Chart

Unwinding - Leveling - Shear Butt Welding - Piston Storage - Second Leveling - Rough Forming (Finishing) - High Frequency Welding - Cooling - Sizing - Eddy Current Testing - Fixed Length Sawing - Straightening - Milling Head - Water Pressure Test-check sorting-packaging-storage

ERW Pipe Flow Chart

Specifications of ERW Steel Pipe

Standard: BS 1387-1985, ASTM A53, ASTM A513, ASTM A252-98, JIS G3444-2004 STK400/500

G3452-2004, EN 10219, EN 10255-1996, DIN 2440, GB/T13793-2008

Material: Q195, Q235, Q275, Q345

Specification: 1/2”-8” (OD: 21.3mm-219.1mm)

Thickness: 1.8mm-6.0mm, +/-5% tolerance.

Surface treatment: Galvanized, oil coating,

Pipe end: Plain, groove, threaded with plastic caps or sockets.

Packing: Bare packing/bundle packing/crate packing/wooden protection at both sides of tubes

Transportation: By 20/40FT containers or by bulk vessels as per condition

ERW Steel Pipe's Advantages:

ERW pipe means "high-frequency resistance welded steel pipe", which is different from ordinary welded pipe welding process. The weld is formed by melting the base material of the steel strip body, and its mechanical strength is better than that of general welded pipe.

ERW welded pipe has the characteristics of high production efficiency, low cost, material saving, and easy automation. Therefore, it is widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial sectors, and it is one of the important welding processes.

Hebei Tianchuang Pipe Co., Ltd is a professional china steel pipe suppliers, we provide electric welded pipe, china steel pipe and etc. Want to know erw steel pipe specifications or erw pipe grade? Please contact us.

Localisation : Yongnian Industrial Park, Handan City, Hebei Province, China., 057150 Yongnian Industrial Park,
Personne à contacter : Li Simon, 0310 6668080

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