... A,B,X42,X46,X52,X56,X60,X65,X70,X High Quality Carbon Steel Drill Pipe We can produced drilling pipe(API5D ... seam inspection. We strictly carry out API spec Q1 quality control system and API Spec 5DP production standard. We have a ... 60.32mm to 139.7mm3) Wall thickness:6.45 to 12.7mm4) Grade:E75,X95,G105,S1355) Length:R1:6. ... 1-7.01mm, R2:8.84-9.75mm, R3:12.19-13.72mm For more than 40 years, we've ...