Features: 1) ERW steel pipes: a) Hot-dipped galvanized and black b) Round and square Features: 1) ERW steel pipes: a) Hot-dipped galvanized and black b) Round and square c) Standard: BS1387-1985, ASTM A53 SCH40 d) Customers' designs welcome2) Fittings: steel sockets, steel nipples, steel king nipples, steel bends ERW Steel Pipes and Carbon steel Fittings