ISO65:seamless carbon steel & erw welded carbon steel pipe 

BS1387-85: erw welded carbon steel pipe ,hot dipped galvanized steel pipe , threaded ends , sockets ends

BSEN10255: erw welded carbon steel pipe, hot dipped galvanized steel pipe both galvanized and black ,seamless and erw 

ASTM A53 : seamless carbon steel pipe & erw welded carbon steel pipe for high pressure fluid

ASTM A500: circle , square , rectangular hollow section  both seamless and erw

ASTM A513: erw carbon steel pipe 

ASTM A106: seamless carbon steel pipe for structural & fluid

AS1163: erw round pipe and square hollow section & rectangular hollow section for steel structural purpose

GB/T3091: erw welded carbon steel pipe for low pressure fluid

GB/T13793: erw welded carbon steel pipe for steel structural purpose

GB/T6728: erw square & rectangular hollow section 

DIN2440:seamless & welded carbon steel pipe both ends threaded and one end sockets ,another ends protected by plastic caps

DIN EN10169,DIN EN 10346: galvanized steel coil prepainted

EN10219:ERW ROUND ,SQUARE , RECTANGULAR PIPE

EN10210: SQUARE , RECTANGULAR PIPE (hollow section) 

EN39: erw scaffolding pipe both galvanized and black 

BS1139: erw scaffolding pipe both seamless and erw 

BS4568-70: Conduit erw

UL797: EMT erw

BS31: pre galvanized conduit erw

API5L: pipeline for gas ,oil  both seamless & erw

API5CT: casing pipe both seamless & erw

JIS G3302: corrugated sheet & galvanized steel coil