WELD PIPE

Weld pipe commonly was classified into rectangle pipe ,and round pipe .round pipe was classified into bright pipe and black pipe . black round pipe also classified into thin wallthickness pipe and thick wall thickness pipe . thick wall thickness pipe commonly contatins two types .one is precision steel pipe , this pipe was used as roller and idler .The standard is like DIN 2391 etc .another type was used to replace seamless boiler pipe , like ASTM A 178 Boiler pipe . if you want to know more information about this pipe .please feel free to contact us by mail.