Welded pipes specification and size

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
Mechanical tubing	ASTM A513	21.3-273 x 2.11-12.7	carbon and alloy steel
Screwed and Socketed Steel Tubes	BS 1387	21.4-113.9 x 2-3.6	Carbon Steel
Scaffolding Pipes	EN 39	48.3 x 3.2-4	Carbon Steel
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

Anti-Corrosion Steel Pipe

Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the process in the transport and use of chemical or electrochemical corrosion reaction of steel pipe.