Standard: API 5D
Application: For well drilling
Tolerance on Dimensions
| Item | Tolerance | |
| Pipe Body | OD≤101.6mm | +0.79mm | 
| OD≥114.3mm | +1% -0.5% | |
| Single Lengths | -12.5% | |
| Weight | +6.5% -3.5% | |
Chemical composition and mechanical properties
| Grade | Chemical Composition | Mechanical Properties | ||
| P | S | Yield Strength(Mpa) | Tensile Strength(Mpa) | |
| E-75 | ≤0.020 | ≤0.015 | 517-724 | ≥689 | 
| X-95 | ≤0.020 | ≤0.015 | 655-862 | ≥724 | 
| G-105 | ≤0.020 | ≤0.015 | 724-931 | ≥793 | 
| S-135 | ≤0.020 | ≤0.015 | 931-1138 | ≥1000 |