drill pipes are in accordance with API 5D. The
material of drill pipe body are chosen by 1&3 group of API 5D.
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.
API Performance parameters of Drill pipe tube body
Grade
Yield strength
tensile strength
min
max
min
Psi
Mpa
Psi
Mpa
Psi
Mpa
E-75
75000
517
105000
724
100000
689
X-95
95000
655
125000
862
105000
724
G-105
105000
724
135000
931
115000
793
S-135
135000
931
165000
1138
145000
1000
API drill pipe welding zone parameter requestSY/T5561 Standard
Grade
Min Yield strength
Min tensile strength
Min elongation
Min Charpy
impact
Mpa
Mpa
%
J
E-75
517
689
13
20(average value)
15single lowest value
X-95
609
712
G-105
655
724
S-135
724
793
| 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 |
