Weld steel pipes

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.

Welded pipes specification and size

ASTM / ASME

Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Electric-Resistance-Welded Steel Pipes ASTM A135 42.2-114.3 x 2.11-2.63 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 21.3-273 x 2.11-12.7 A, B
Pipes for Piling Usage ASTM A252 219.1-508 x 3.6-12.7 Gr2, Gr3
Tubes for General Structural Purpose ASTM A500 21.3-273 x 2.11-12.7 Carbon Steel
Square Pipes for General Structural Purpose ASTM A500 25 x 25-160 x 160 x 1.2-8.0 Carbon Steel

BS

Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Screwed and Socketed Steel Tubes BS 1387 21.4-113.9 x 2-3.6 Carbon Steel

EN

Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Scaffolding Pipes EN 39 48.3 x 3.2-4 Carbon Steel

JIS

Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Carbon Steel Tubes for General Structure Purpose JIS G3444 21.7-216.3 x 2.0-6.0 Carbon Steel
Carbon Steel Tubes for Machine Structure Purpose JIS G3445 15-76 x 0.7-3.0 STKM11A, STKM13A
Carbon Steel Pipes for Ordinary Piping JIS G3452 21.9-216.3 x 2.8-5.8 Carbon Steel
Carbon Steel Pipes for Pressure Service JIS G3454 21.7-216.3 x 2.8-7.1 Carbon Steel
Carbon Steel Rigid Steel Conduits JIS G8305 21-113.4 x 1.2-3.5 G16-G104, C19-C75, E19-E75
Carbon Steel Rectangular Pipes for General Structure JIS G3466 16 x 16-150 x 150 x 0.7-6 Carbon Steel