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 Norminal Designation Pipe body Tool joint Size W/T Grade Up- set OD mm Wall RSC type OD mm ID mm Bevel Dia. of shoulder DF(mm) Pin tong Box tong OD of upset neck torsion 2 3/8 6.65 E EU 60.32 7.11 NC26 85.7 45.45 82.95 177.8 203.2 65.09 1.1 X 85.7 45.45 82.95 177.8 203.2 65.09 0.87 G 85.7 45.45 82.95 177.8 203.2 65.09 0.79 2 7/8 10.4 E EU 73.02 9.19 NC31 104.8 53.98 100.41 177.8 228.6 80.96 1.03 X 104.8 50.8 100.41 177.8 228.6 80.96 0.9 G 111.1 50.8 100.41 177.8 228.6 80.96 0.82 S 41.28 100.41 177.8 228.6 80.96 0.82 3 1/2 13.3 E EU 88.9 9.35 NC38 120.7 68.26 116.28 203.2 266.7 98.43 0.98 X 127 65.09 116.28 203.2 266.7 98.43 0.87 G 127 61.91 116.28 203.2 266.7 98.43 0.86 S 127 53.98 116.28 203.2 266.7 98.43 0.8 E 11.4 127 65.09 116.28 203.2 266.7 98.43 0.97 X 127 61.91 116.28 203.2 266.7 98.43 0.83 G 127 53.98 116.28 203.2 266.7 98.43 0.9 15.5 S NC40 139.7 57.15 127.4 177.8 254 98.43 0.87 4 14 E IU 101.6 8.38 NC40 133.4 71.44 127.4 177.8 254 106.36 1.01 X 133.4 68.26 127.4 177.8 254 106.36 0.86 G 139.7 61.91 127.4 177.8 254 106.36 0.93 S 139.7 50.8 127.4 177.8 254 106.36 0.87 E EU NC46 152.4 82.55 145.26 177.8 254 114.3 1.43 X 152.4 82.55 145.26 177.8 254 114.3 1.13 G 152.4 82.55 145.26 177.8 254 114.3 1.02 S 152.4 76.2 145.26 177.8 254 114.3 0.94 4.5 16.6 E IEU 114.3 8.56 NC46 158.8 82.55 145.26 177.8 254 119.06 1.09 X 158.8 72.6 145.26 177.8 254 119.06 1.01 G 158.8 76.2 145.26 177.8 254 119.06 0.91 S 158.8 69.85 145.26 177.8 254 119.06 0.81 20 E 10.92 158.8 76.2 145.3 177.8 254 119.07 1.07 X 158.8 69.85 145.3 177.8 254 119.07 0.96 G 158.8 63.5 145.3 177.8 254 119.07 0.96 S 158.8 57.15 145.3 177.8 254 119.07 0.81 16.6 E EU 8.56 NC50 168.3 95.25 154 177.8 254 127 1.23 X 168.3 95.25 154 177.8 254 127 0.97 G 168.3 95.25 154 177.8 254 127 0.88 S 168.3 88.9 154 177.8 254 127 0.81 20 E 10.92 168.3 92.08 154 177.8 254 127 1.07 X 168.3 88.9 154 177.8 254 127 0.96 G 168.3 88.9 154 177.8 254 127 0.96 S 168.3 76.2 154 177.8 254 127 0.81 5 19.5 E IEU 127 9.19 NC50 168.3 95.25 154 177.8 254 130.18 1.23 X 168.3 88.9 154 177.8 254 130.18 0.97 G 168.3 82.5 154 177.8 254 130.18 0.88 S 168.3 69.85 154 177.8 254 130.18 0.81 25.6 E 12.7 168.3 88.9 154 177.8 254 130.18 1.02 X 168.3 76.2 154 177.8 254 130.18 0.96 G 168.3 69.85 154 177.8 254 130.18 0.86 S 0.87 19.5 E 9.19 51/2FH 177.8 95.25 170.7 203.2 254 130.18 1.53 X 177.8 95.25 170.7 203.2 254 130.18 1.21 G 177.8 95.25 170.7 203.2 254 130.18 1.09 S 184.2 88.9 170.7 203.2 254 130.18 0.98 25.6 E 12.7 177.8 88.9 170.7 203.2 254 130.18 1.21 X 177.8 88.9 170.7 203.2 254 130.18 0.95 G 184.2 88.9 170.7 203.2 254 130.18 0.99 S 184.2 82.55 170.7 203.2 254 130.18 0.83 5 1/2 21.9 E IEU 139.7 9.17 177.8 101.6 170.7 203.2 254 144.46 1.11 X 177.8 95.25 170.7 203.2 254 144.46 0.98 G 184.2 88.9 170.7 203.2 254 144.46 1.02 S 190.5 76.2 180.2 203.2 254 144.46 0.96 24.7 E 10.54 177.8 101.6 170.7 203.2 254 144.46 0.99 X 184.2 88.9 170.7 203.2 254 144.46 1.01 G 184.2 88.9 170.7 203.2 254 144.46 0.92 S 190.5 76.2 180.2 203.2 254 144.46 0.86 6 5/8 25.2 E IEU 168.3 8.38 65/8FH 203.2 127 195.7 203.2 279.4 176.21 1.04 X 203.2 127 195.7 203.2 279.4 176.21 0.82 G 209.6 120.65 195.7 203.2 279.4 176.21 0.87 S 215.9 107.95 195.7 203.2 279.4 176.21 0.86 27.7 E 9.19 203.2 127 195.7 203.2 279.4 176.21 0.96 X 209.6 120.65 195.7 203.2 279.4 176.21 0.89 G 209.6 120.65 195.7 203.2 279.4 176.21 0.81 S 215.9 107.95 195.7 203.2 279.4 176.21 0.8
