With professional and productive factory, HAINAISEN is one of the leading China ladder type drag bit manufacturers. Welcome

to wholesale ladder type drag bit from us, we always have cheap products to offer you.
IntroductionLeading manufacturer of tungsten carbide drag bit in different size, such as 2-wings drag bit, 3-wings drag

bit,4-wings drag bit.Other special design is available upon your request.
Theory
Drag bits 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.
Application
Drag bits also named blade bits, with a TC 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 that are easiest to log.
Feature
Usually drag bits are three wings, while sometime people need four wings or five wings.
hree wings drag bits:
1.Drag bits are made according to API standard or NROD thread standard or others.
2.Various step and chevron drag bits are available from 2 inch to 17 1/2 inch.
3.There is very good feedback because of the quality and price.
4.Different drag bits can be made according to your drawings or samples. http://www.pdcoiltool.com