ERW Steel Pipe Crude oil pipelines, Natural gas pipelines, Water supply ... inch)Standard: API 5L, API 5CT,BS1387-1985,ASTM A-53,GB/T3091-2001Grade: A, B, X42, X46, X52, X56, X60, ... together with steel stripType of ERW Steel Pipe finish: Black paint on pipe, beveled or plain end with plastic ... cap.ERW Steel Pipe Application: Line pipe in oil and sewage transportation, in low ...