The descriptions of a crown thread drilling pipe.
A crown thread drilling pipe is for a water well borehole drilling rig to drill a water well borehole, the length of the crown thread drilling pipe is 1.5m, 2m, 3m, and 6m. What length of a crown thread drilling pipe is suitable based on the drilling tower of the water borehole drilling rig?
A Crown thread drilling pipe is a kind of steel pipe with a pin screw at one end and a box screw on the other. The drilling pipe is to transmit rotational torque from a drill rig rotary head down to the drilling bits. The threads are standard API connections, like 2 3/8″ API REG thread, 3 1/2″ API REG thread or API IF thread, etc.
Usually, the diameter is 50mm, 60mm, 76mm, 89mm, 95mm, 102mm, 114mm, 127mm, 140mm, 159mm, the diameter is from 1000mm to 6000mm in length.
The specifications of crown thread drilling pipe.
| Drilling Diameter | length | Connection Thread | Thickness |
| 60mm, 2 3/8 inch | 1,000~6000 mm | T42×10×2 | 5~8 mm |
| 76mm, 3 inch | 1,000~6000 mm | 2 3/8” API REG | 5~8 mm |
| 89mm, 3 1/2 inch | 1,000~6000 mm | 2 3/8” API REG/IF | 5~12 mm |
| 114mm, 4 1/2 inch | 1,000~6000 mm | 2 7/8” API IF, 3 1/2” API REG | 6.5~20 mm |
| 127mm, 5 inch | 1,000~6000 mm | 3 1/2” API REG | 8~20 mm |
| 140mm, 5 1/2 inch | 1,000~6000 mm | 3 1/2” API REG | 10~22 mm |
| 146mm, 5 3/4 inch | 1,000~6000 mm | 3 1/2” API REG | 10~22 mm |
| 152mm, 6 inch | 1,000~6000 mm | 4 1/2” API REG | 10~22 mm |