The polish rod clamps are with hinge-joint butterfly structure. The body is made of high grade casting steel and accomplished with subjected heat treatment.
The clamps hold the polish rods tightly with force of friction. No any inserts with teeth needed. So damages and cuttings on the polish rod surface can be eliminated.
The specifications and main parameters
| Working tempareature(°C) | 350 | 350 | 350 |
| Working pressure (MPa) | 17 | 17 | 17 |
| Sealing temperature (°C) | 250 | 250 | 250 |
| Connection threads | Up:2-7/8NUE down:2-7/8"NUE | Up:4-1/2"BCSG,Down:2-7/8NUE | Up:4-1/2"BCSG,Down:2-7/8"NUE |
| Certification | API 11B |
| Material | Alloy steel |
| Processing Type | Casting |
| Use | Oil production |
| Specification | 1", 1-1/8", 1-1/4", 1-1/2", 1-3/4" |
| Function | Connect with sucker rod pump and sucker rod |
| Thread type | EUE, NUE |
| Surface processing | Phosphate electrostatic spraying |
| Types | One bolt, two bolt, three bolt clamp |
