All drill pipes are made according to API SPEC 5D Our company can provide drilling pipe,HWDP,tubing pipe,casing pipe and so on Technical specification: Outside diameterNormal weightAccount weightSteel gradeWall thicknessUpset endsin.mmlb/ftkg/min.mm2 3/860.36.656.269.32E,X,G,S0.2807.11EU2 7/873.010.49.7214.48E,X,G,S0.3629.19EU IU3 1/288.99.508.8113.12E0.2546.45EU IU3 1/288.913.3012.3118.34E,X,G, ...