Dongying Boru Mechanical Equipment Co.,Ltd
The grade of steel are determined according to the requirements of Group 1 & Group 3 of 5D.
Drill pipe joints at the same level comply with the provisions under the Standard 7.
Standard pipe size range: 2-3/8”~6-5/8”.
| Group | Grade | Yield Strength | Tensile Strength | ||||
| Minimum | Maximum | Minimum | |||||
| psi | Mpa | psi | Mpa | psi | Mpa | ||
| 1 | E-75 | 75000 | 517 | 105000 | 724 | 100000 | 689 |
| 3 | X-95 | 95000 | 655 | 125000 | 862 | 105000 | 724 |
| G-105 | 105000 | 724 | 135000 | 931 | 115000 | 793 | |
| S-135 | 135000 | 931 | 165000 | 1138 | 145000 | 1000 | |
