140 мм QL50 молоток dth, буровые долота для водяных скважин, горных работ, бетонного бурения, пескоструйная обработка (60681055564)

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Product Overview


140mm diameter QL50 hammer 's dth button bits for tunneling,piling,water well,mining,concrete drilling,quarrying,blasting



Product Description


The dth button bits  is the tool cutting rock. Sinodrills DTH button bits are made of superior quality alloy steel which is made by Timken in U.S. Besides, all our DTH bits are using the brand "Element Six" T.C carbide which provides (the T.C buttons) for Boart Longyear. In addition art manufacturing technology makes our dth button bits with higher and more reliable quality.

Different face style makes DTH bits suitable for various rock conditions.

Flat face:  This is an universal design, especially for hard and abrasive rock formation. So typically, flat face with hemi-spherical buttons design is the most popular choice.


Convex face: A classic design for soft to medium hard rock formation which is not so abrasive. This design have very excellent penetration rate but poor in hole deviation if rocks are hard.


Concave face: Medium hard to hard rock formations which is less abrasive and fractured. Especially for deep hole drilling, excellent control over hole deviation.


DGR face:  A special design for hard or very hard rock conditions, double gauge row buttons provide very excellent ware-resistance and very longer life time.  It is usually used for some bigger diameter DTH bits.
Besides, we are manufacturing the DTH bits with various shanks so they can be compatible with different DTH hammers.



Product description


the specifications of QL50 dth button bits  is below for  your reference:


Shank style

Diameter in mm

Flat face

Convex face

Concave face

Approx. weight

Part number



QL 50


16.2 kgs



16.6 kgs



17.1 kgs



17.8 kgs



18.0 kgs




 Other dth button bits:


          Bit size         Shank type                Recommended DTH bits diameter
 3.5”/3” DTH hammer bits COP34, DHD3.5, MISSION30, BR3 shank 90mm~ 105mm
4'' DTH hammer bits DHD340, QL40, MISSION40, SD4 shank 110mm~ 130mm
5'' DTH hammer bits DHD350, QL50, MISSION50, SD5 shank 134mm~ 152mm
 6” DTH hammer bits DHD360, QL60, MISSION60, SD6 shank 152mm~ 203mm
 8” DTH hammer bits DHD380, QL80, MISSION80, SD8 shank 203mm~ 305mm
12'' DTH hammer bits DHD112, SD12 and QL120 shank. Available upon to customers’ request

 Welcom to our company and order this product , QL50 dth button bits . 

Packaging & Shipping

dth button bits will be packed in cardboard and plywood case ,shipped by sea,by air or by land.

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