High Quality Carbon Steel Drill Pipe 1.OD: 10.3-1219.2mm 2.WT: 1. ... ,B,X42,X46,X52,X56,X60,X65,X70,X High Quality Carbon Steel Drill Pipe We can produced drilling pipe(API5D,APISEPC7,API5CT ... :6.45 to 12.7mm4) Grade:E75,X95,G105,S1355) Length:R1:6.1-7.01mm, R2:8.84-9.75mm ... each heat of steel.Strict full-length inspection especially on the weld-neck region ensures the drill pipes are of no defects ...