Black Tube,API 5I,ERW Pipe 1.Size: OD 10.3-609.6mm, WT ... 3PE; FBE; Black Tube,API 5L,ERW Pipe's Black Tube,API 5L,ERW Pipe's Specifications:1.Gradl: GR.B,X42 ... inspection; SGS/BVBlack Tube,API 5L,ERW Pipe's Black Tube,API 5L,ERW Pipe's Available Designation: STANDARDGRADEAPPLICATIONAPI 5CTJ55,K55,N80Low ... 1/2/3 Black Tube,API 5L,ERW Pipe's Black Tube,API 5L,ERW Pipe's Prosessing Photo: Black Tube,API ...