ERW steel pipe is the straight seam resistance welding pipe, the English Electric Resistance Welding, abbreviation for ERW.

ERW steel pipe is produced by forming the hot rolled rolling plate through the molding machine, melting the edge of the pipe blank and performing pressure welding under the extrusion roller. The uniform wall thickness can be controlled at about ± 0.2mm.ERW production process has high production efficiency, low cost, material saving, easy automation and other characteristics, widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial fields.

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General Standard and Application of ERW Steel Pipe
S.N.StandardsApplication 
1ASTM A53 Seamless and Welded Black and Hot-dipped Galvanized Steel Pipe
2ASTM A135 Electric-resistance-welded(ERW) steel pipe in NPS 2 to NPS 30
3ASTM A178 Electric-Resistance-Welded(ERW) Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes
4ASTM A214 Electric-Resistance-Welded(ERW) Carbon Steel Heat-Exchangerand Condenser Tubes 
5ASTM A250 Electric-Resistance-Welded(ERW) Ferritic Alloy-Steel Boiler and Superheater Tubes
6ASTM A333 Welded Steel Pipe for Low Temperature Service
7ASTM A334 Welded Carbon and Alloy Steel Tubes for Low Temperature Service
8ASTM A500Cold-Formed Welded Carbon Steel Structural Tubing in Rounds and Shapes
9ASTM A501Hot-Formed Welded Carbon Steel Structural Tubing
10ASTM A513Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing
11ASTM A523Plain end Electric Resistance Welded Steel Pipe for High Pressure Pipe Type Cable Circuits
12ASTM A618Hot-Formed Welded High-Strength Low-Alloy Structural Tubing
13ASTM A795Black and Hot-Dipped Zinc-Coated (Galvanized) Welded Steel Pipe for Fire Protection Use
14EN 10208-1Steel Pipes for Pipelines for Combustible Fluids-Pipes of Requirement Class A
15EN 10208-2Steel Pipes for Pipelines for Combustible Fluids-Pipes of Requirement Class B
16EN 10217-1Welded Steel Tubes for Pressure Purposes-Non-alloy steel tubes with specified room temperature properties
17EN 10217-2Welded Steel Tubes for Pressure Purposes-Electric Welded Non-alloy and Alloy Steel Tubes with Specified Elevated Temperature Properties
18EN 10217-3Welded Steel Tubes for Pressure Purposes-Alloy fine grain steel tubes
19EN 10217-4Welded Steel Tubes for Pressure Purposes-Electric Welded Non-alloy and Alloy Steel Tubes with Specified Low Temperature Properties
20EN 10217-5Welded Steel Tubes for Pressure Purposes-Submerged Arc Welded Non-alloy and Alloy Steel Tubes with Specified Elevated Temperature Properties
21EN 10217-6Welded Steel Tubes for Pressure Purposes-Submerged Arc Welded Non-alloy Steel Tubes with Specified Low Temperature Properties
22EN 10224Non-alloy Steel Tubes for the Conveyance of Water and Other Aqueous Liquids
23EN 10255Non-alloy Steel Tubes Suitable for Welding and Threading
24EN 10288Steel Tubes and Fittings for Onshore and Offshore Pipelines
25EN 10296-1Welded Circular Steel tubes for Mechanical and General Engineering Purposes-Non-alloy and Alloy Steel Tube
26EN 10305-2Steel Tubes for Precision Applications-Welded Cold Drawn Tubes
27EN 10305-3Steel Tubes for Precision Applications-Welded Cold Sized Tubes
28EN 10305-6Steel Tubes for Precision Applications-Welded Cold Drawn Tubes for Hydraulic and Pneumatic Power Systems
29DIN 30670Polyethylene Coatings on Steel Pipes and Fittings
30ISO 3183Steel Pipe for Pipelines Transportation Systems
31API 5LSpecification for Line Pipe