drill pipes are in accordance with API 5D. The
material of drill pipe body are chosen by 1&3 group of API 5D.
Applied standard:API SPEC 7 drill pipe tool joint
API SPEC 5D Drill pipe specification
SY/T 5561-92 Friction welding pipe welding zone technological conditions
echnological conditions
Pipe joints and tube body strictly according to the selection criteria,for welding zone work procedure complete on C-132-J Friction welding machine, for welding parts carry on quenching and annealing after welding,hardening and tempering treatment. Each performance index and the specification request must be achieved related standard.
| Dimensions of Drill pipe | |||||||||
| sizes | nominal weight | calculate the weight of flat-side | D/OD | grade | thickness | thickening of the form | |||
| Lb/ft | Kg/m | in | mm | in | mm | ||||
| 2 3/8 | 6.65 | 6.26 | 9.32 | 2.375 | 60.3 | E,X,G,S | 0.280 | 7.11 | external thickening |
| 2 7/8 | 10.40 | 9.72 | 14.48 | 2.875 | 73.0 | E,X,G,S | 0.362 | 9.19 | inside or outside the thickening thickening |
| 3 1/2 | 9.50 | 8.81 | 13.12 | 3.500 | 88.9 | E | 0.254 | 6.45 | inside or outside the thickening thickening |
| 3 1/2 | 13.30 | 12.31 | 18.34 | 3.500 | 88.9 | E,X,G,S | 0.368 | 9.35 | inside or outside the thickening thickening |
| 3 1/2 | 15.50 | 14.63 | 21.79 | 3.500 | 88.9 | E | 0.449 | 11.40 | inside or outside the thickening thickening |
| 3 1/2 | 15.50 | 14.63 | 21.79 | 3.500 | 88.9 | X,G,S | 0.449 | 11.40 | within and outside the outer thickening or thickening |
| 4 | 14.00 | 12.93 | 19.26 | 4.000 | 101.6 | E,X,G,S | 0.330 | 8.38 | inside or outside the thickening thickening |
| 4 1/2 | 13.75 | 12.24 | 18.23 | 4.500 | 114.3 | E | 0.271 | 6.88 | inside or outside the thickening thickening |
| 4 1/2 | 16.60 | 14.98 | 22.31 | 4.500 | 114.3 | E,X,G,S | 0.337 | 8.56 | within and outside the outer thickening or thickening |
| 4 1/2 | 20.00 | 18.69 | 27.84 | 4.500 | 114.3 | E,X,G,S | 0.430 | 10.92 | within and outside the outer thickening or thickening |
| 5 | 16.25 | 14.87 | 22.15 | 5.000 | 127.0 | X,G,S | 0.296 | 7.52 | in thickening |
| 5 | 19.50 | 17.93 | 26.71 | 5.000 | 127.0 | E | 0.362 | 9.19 | inside and outside the thickening |
| 5 | 19.50 | 17.93 | 26.71 | 5.000 | 127.0 | X,G,S | 0.362 | 9.19 | within and outside the outer thickening or thickening |
| 5 | 25.60 | 24.03 | 35.79 | 5.000 | 127.0 | E | 0.500 | 12.70 | inside and outside the thickening |
| 5 | 25.60 | 24.03 | 35.79 | 5.000 | 127.0 | X,G,S | 0.500 | 12.70 | within and outside the outer thickening or thickening |
