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Diamond Double Tube Should Meet The Following Requirements Jan 10, 2018

1. Single-action performance is good, the concentricity between the components is better.

2. Pipe without cracking.

3 threaded better.

4. The assembled drill should not be free to fall off when it is lifted vertically.

5. Assembled drill bottom of the spring seat and the bit within the drill distance of 3 to 4 mm.

Use diamond double tube rules must be followed

1. Do not use pipe wrenches to unscrew the drill bit, reamer and inner and outer pipe, and use multi-contact forceps or friction clamp, but also should be noted that the forceps can not touch the drill bit or reamer part of the block.

2. When exiting the core, the sediment-like soft core should be withdrawn by using the mud pump hydraulic pressure relief method. More complete hard core to use rubber hammer, wooden hammer beat the inner tube. Do not use a hammer directly beat the double tube of the inner and outer tube, if necessary, can be in the tube outer pad steel sheath.

3. The double pipe can not be dragged or strove violently while moving; it should be settled when stored, not heavy; when shipping, it should be packaged;

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