Hole opener bit for 12 1/4inch
We(Chuanda ) can design all the rock reamers (Hole openers ) for
both horizontal directional drilling and vertical drilling as your
special request,for example center shaft length, thread (screw)
type, roller cones (palms) sizes, pilot size, extra projection on
the palm ,nozzles , nozzles sizes ,for both replaceable cones and
fixed cones hole openers for your whole drilling project .We
Very soft formations with low compressive strength and high
such as clay, mudstone, chalk, gypsum, salt, soft limestone, etc.
Soft formations with low compressive strength and high
such as mudstone, gypsum, salt, soft limestone, etc.
Soft to medium formations with low compressive strength, such as
medium soft limestone, medium soft sandstone, medium formation
with harder and abrasive interbeds, etc.
Medium hard formation with high compress strength, such as hard
limestone, sandstone, dolomite. etc
Hard formations with high compressive strength, such as sandstone,
limestone, dolomite ,hard gypsum, marble, etc.
Note: The upper limits of WOB and RPM in above table should not be
1.Force balanced,resist impact to the blade during high-speed
drilling,to make bit work stable.
2.The cutter is high performance to increase the ability of
anti-impact and anti-abrasive.
3.Optimal hydraulic desigh,easy to move out the drill cuttings and
4.Equipped with back reaming teeth.
Any inquiry is welcomed here .
1) How to send money to us ?
We can send you our bank account information after the contract is
made .By T/T ,Western union ....
2) What is the MOQ ?
Small trial order is acceptable ,like 1pc,2 pcs....
3) Inspection is possbile ?
Yes, you are welcome to our company at any time or you can make
inspection through Third inspection agent ,like "SGS" ,BV and so on
4) How to transport the bits ?
By sea ,by air ,by DHL,by UPS and so on ....
Do you have any questions ? Please don't hesitate to ask me and you
will get the satisfactory response once you contact us .