... Tube,API 5I,ERW Pipe 1.Size: OD 10.3-609.6mm, WT 1.0-22mm, L <12m 2 ... .Inspection:hydrostatic test 3.Coating:PE; 3PE; FBE; Black Tube,API 5L,ERW ... Tube,API 5L,ERW Pipe's Specifications:1.Gradl: GR.B,X42/X46/X52/X56/x60/X70/X80 2 ... Bridge Structure, Oil And Natural Gas Pressure Steel Tube etc.API 5LGR.B,X42/X46/X52/X56/ ... / GR.C GR.1/2/3 Black Tube,API 5L,ERW Pipe's Black Tube,API 5L,ERW Pipe's ...