durable well drilling /mining 4 1/8" single roller bits
USD $100 - $5,000 /Piece
Min.Order:1 Piece
Hejian Hengji Bit Manufacture Co., Ltd.
IADC | WOB(KN/mm) | RPM(r/min) | Applicable Formations |
527 | 0.3-0.7 | 120-50 | Soft formation with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft shale,soft limestone,etc |
547 | 0.3-0.7 | 100-50 | Soft to medium formation with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,medium for formation with harder and abrasiver interbeds,etc. |
617 | 0.4-0.8 | 90-50 | Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,etc. |
It is suitable for sidetracking,deep well drilling and old well repairing.
1 Two watercourse can improve washing endurance and prevent mud.
2 Silver-plated at sliding surfaces of cone bearing to strength self-lubricating effect,and improve the bearing of wear-resisting life.
3 The bit inlaid with diamond compact teeth can be more effectively improve working life.
4 Two advanced high-saturated buna-N rubber seal rings are used for journal and bearing pin sealing,which ensured the high reliability of the bearing seal structure.
5 The bearing is improved by applying hard facing layer on head bearing surface,extended working life.
By sea ,By plane , By train ,By DHL,and so on
Guarantee period is 3-4 years.
Supply use and maintenance support.
Welcome to visit our company and inquire any other question, We will answer your questions in detail
1. How to order the products?
Answer:
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. http://hengjibit.en.china.cn/
2. About delivery time?
Answer :
The delivery time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.
3.Can I expect a quality products?
Answer :
Yes. 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.
Contact information:
Name:Ocean yang
TEL.:+86-317-8114222
QQ: 2197735445