8 1/2″ chisel 537 tricone rock roller bit tungsten domed instert drilling bits

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Product Description
Specification
IADC
WOB
RPM
Applicable Formations
(KN/MM)
(r/min)
(Bit Dia)
116 117
0.35~0.8
150~80
Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk etc.
136 137
0.35~1.0
120~60
Soft to mesium soft formations with low compressive strength and high drillability.such as medium soft shale,hard gypsum,medium
soft limestone.medium soft sandstone soft formation with harder nterbeds,ect.
216 217
0.4~1.0
100~60
Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft
sandstone,soft formation with harder interbeds ect.
246 247
0.4~1.0
80~50
Medium hard formations with high compressive strength,such as abrasive shale.limestone,sandstone,dolomite,hard gypsum,marble,ect.
417 437
447
0.35~0.9
150~70
Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk,gypsum,salt,soft shale,soft
limestone,etc.
517 527
0.35~1.0
140~60
Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,soft shale.soft limestone,ect.
537 547
0.45~1.0
120~50
Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,medium soft
sandstone,medium formation with harder and abrasiver interbeds,ect.
617 627
0.45~1.1
90~50
Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,ect.
637
0.5~1.2
80~40
Hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble,ect.
Packing & Delivery
Company Profile
FAQ
1. Is your company a distributor or a manufacturer?
A: Yes,We are a a professional factory of
rock drilling bits in China.

2. How about your products?
A : All our activities are accredited to ISO 9001:2008, both in products and services, at the same time, mature production
technology ensuring the quality satisfy international request.We have many high quality bits.

3.what is the Packaging & Delivery?
A:We used high quality export carton or standard export woodern case

4.what is the time about the delivery?
A: repared to deliver within 1 week, if in stock.
Depends on order quantity, when out of stock,7-30days
Transportation:By sea or air
5. How to order the products?
A: Send the inquiry with detail item description or with Model number. If there is no packing demand we take it as sea-way
packing. If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.

Model Number

537

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