ASTM A53 is standard specification for pipe, steel, black and hot dipped, zinc-coated, welded and seamless.ASTM A53 pipe is used as structural steel or for low-pressure plumbing.
A53 Type S, which is seamless pipe, produced by hot working, and possibly cold finishing, There are two grades :A53 Type S Gr A and A53 Type S Gr.B
China Standard : GB/T 8162
Japan Standard :JIS G3441 ;JIS G3444
WORLDIRON STEEL stock size from 1/2'' to 24'' schedule 40 A53 seamless pipe.ASTM A 53 Grb carbon steel pipe.Schedule 40 size including:
2" SCHEDULE 40 A 53 Grb pipe,3" SCHEDULE 40 A 53 seamless pipe,4" SCHEDULE 40 A 53 carbon steel pipe and so on...
Further information,see WORLDIRON STEEL PIPE