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Junk Sub is normally used to catch and remove shivers and fallen s such as carbide tooth, drill bit and bearings which are too heavy to be removed from the well hole. Junk sub can be easily disassembled to clean and maintain. Tianhe junk sub can be used while drilling operation to clean the drilling fluid effectively.


Ordering Instructions
1. Select your desired specification according to the applicable hole size.
2. For special order, please specify the required special technical parameters in the contract.

Ordering Instructions
1. Select your desired specification according to the applicable hole size.
2. For special order, please specify the required special technical parameters in the contract.

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Tianhe Oil Group Huifeng Petroleum Equipment CO. ltd.