The drill stem / drill string including DP (drill pipe), HWDP (heavy weight drill pipe), DC (drill collar), Kelly etc. The accessories, such as tool joint, drilling tool lifting sub, cross-over sub and so on are also available according to customers' detailed requirements.Technical parameter Nominal size Pipe body Tool joint Weight D d Upset dimension RSC type DJ ID HSC bevel DF(mm) Kg/Piece Center dia. Dm(mm) End dia. DTE(mm) 3 1/2 88.9 57.4 101.6 98.4 NC38 127 52.4 116.3 312 3 1/2 88.9 57.2 101.6 98.4 NC38 127 57.2 116.3 282 4 101.6 65.1 114.3 106.4 NC40 133.4 65.1 127.4 370 4 1/2 114.3 69.9 127 119.1 NC46 158.8 69.9 145.3 558 5 127 76.2 139.7 130.2 NC50 168.3 76.2 154 672 5 1/2 139.7 92.1 152.4 144.5 5 1/2FH 184.2 92.1 170.7 776 6 5/8 168.3 114.3 184.2 176.2 6 5/8FH 203.2 144.3 195.7 964
