Wire-line core drilling tools can lift core from drill rods without picking up coring system. A complete set of wire-line drill tools include: Core barrel assembly, overshot assembly, drill rods, holding dog, hoisting plug, circle wrench etc. It has some advantages such as high penetration rate, high penetration rate, high core recovery ratio, long bit life and lower labour intensity. The advantages can get more clear with the increasing of drill hole depth.
We can supply B N H overshot Assembly.

Brief Introductions of overshot
We are a China core drill manufacturer. The overshot is used when wear and other mechanical damage prevent the use of the regular pulling tool. We can produce overshot assembly of all Wireline and Chinese standards. Our overshots are consisted of lifting dogs, jar tube and swivel. Owing to the large amount of stocks, the products can be shipped out immediately according to your requirements. Geotec sincerely hopes to cooperate with you.
Features of overshot
1) Strong magnetic field and strong attractive force.
2) Have multiple functions.
3) Be convenient and safe in use.
4) Advanced designs and multiple choices.

Applications of overshot
It is widely used in geological and mineral, metallurgy, mining, oil drilling, and hydrology industries. This product is suitable for a wide range of aperture grades. It is used for attracting the pro-magnetic objects, for example, steel drop, hard alloy, sheet iron, iron slab, scrap iron as well as other iron apparatus left in the hole.