Good Quality Button Drill Bits - Coupling Sleeve – TDS
Good Quality Button Drill Bits - Coupling Sleeve – TDS Detail:
Because of different applications, we need different lengths of drill stems, so couplings sleeves are used for connecting extension rods. There are semi-bridge couplings and full bridge couplings, the only difference between them is that semi-bridge couplings have a middle stop at the middle of couplings. Usually couplings two ends are the same couplings, like R25, R32,R38,T45, T51, etc .While sometime people need crossover couplings to work, for example, one end is R32 and another end is R38, but basically all couplings are female threads at the two ends.
Connection | Length | diameter | Connection |
D1 | D2 | ||
mm | mm | ||
R22 | 100 | 32 | R22 |
R32 | 160 | 48 | R32 |
R32 | 170 | 55 | R32 |
R25 | 160 | 37 | R25 |
R38 | 170 | 55 | R38 |
T38 | 190 | 55 | T38 |
T45 | 210 | 64 | T45 |
T51 | 225 | 75 | T51 |
T38 | 185 | 55 | T38 |
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Quality comes first; service is foremost; business is cooperation" is our business philosophy which is constantly observed and pursued by our company for Good Quality Button Drill Bits - Coupling Sleeve – TDS , The product will supply to all over the world, such as: Jordan, Vietnam, Bolivia, They're durable modeling and promoting well all over the world. Under no circumstances disappearing key functions in a brief time, it's a must for yourself personally of fantastic quality. Guided by the principle of Prudence, Efficiency, Union and Innovation. the business make an awesome efforts to expand its international trade, raise its enterprise. rofit and improve its export scale. We have been confident that we will have a vibrant prospect and to be distributed all over the world in the years to come.

The factory technical staff gave us a lot of good advice in the cooperation process, this is very good, we are very grateful.

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