We have all size of tricone bits,PDC bits,core bits,steel tooth bits,insert tricone bits,single cone bits,hole opener,assemble tricone bit,etc. Suitable for soft to hard formations.
3 wing drag drill bit for well drilling
Step Drag Bits also named blade bits, with a Tungsten Carbide inserts on the blades. They are usually designed for use in soft formations such as sand, clay, or some soft rock. Their uses include drilling water wells, mining, geothermal, environmental and exploration drilling. Whenever possible, they should be used to drill pilot holes, for they produce cuttings are easiest to log. Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples. Many special designs are available upon your request. Drag bit are manufactured from forged high quality alloy steel and premium tungsten carbide insert, plus state of art welding technology and multiple precision heat-treatment to provide highest penetration rate and longest lifespan at roughest condition
Shale more or drilling fluid density is larger, should be selected with a larger amount of slip drill
The formation of limestone, sandstone, should choose smaller slip bit
In drilling hard and high abrasive stratum, appropriate uses ball tooth, double cone tooth head.
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.alibaba.com/
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.
payment:T/T. 30%deposits,70% before delivering.
If you have any questions ,pl tell me ,it is my pleasure to reply you.