| Customization: | Available |
|---|---|
| Type: | Round |
| Standard: | ASTM, DIN |
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Casing is mainly used for drilling construction is to be protect the stability of the hole wall, prevent leakage, collaspes, cavity isolation of aquifers. so that the drilling tool successfully reached the drilling depth, the casing structure adptos two kinds of structure straight connection with coupling or straight connection with male and female,casing shoe can be connected at the bottom of casing to ensure the stability of casing.
casing products adopt DCDMA international standards and domestic industry standards.The W and WT series are interestional standards for direct-connected structures,the common geoglocial casing in China is the structure with coupling.
| Model | Outside diameter (MM) |
| AW | 57.1*4.35 |
| BW | 73*6.35 |
| NW | 88.9**6.35 |
| HW | 114.3*6.35 |
| HWT | 114.3*6.35 |
| PW | 139.7*6.35 |
| PWT | 139.7*7.1 |
| SW | 168.3*7.95 |
| 73 | 73*3.75 |
| 89 | 89*4.5 |
| 91 | 91*4.5 |
| 108 | 108*4.5 |
| 127 | 127*4.5 |
| 149 | 146*5.0 |
| 168 | 168*6.5 |
| 178 | 178*7.0 |
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