LZQ TOOL CO., LTD. +86-021-50327060
LZQ TOOL CO., LTD. zq@lzqtech.com
LZQ Tools

Depth Drill


Super-hard processing of professional, special, non-standard, special shaped and new products with any kind, any shape and tolerance. If you have any similar inquiry, please fax us your address or call us to get samples in the photos and related catalogue for your reference (only a small amount is allowed).

We keep around RMB 20~30 Million turnover stock articles such as raw material, semi-products, finished products in an ordinary year, we are capable to produce according to drawing or sample provided by the customer, so as to present you a favourable cost-performance ratio…Welcome to visit our factory.

Product Details

We can also provide mass production of centre drill bit, chamfer drill bit, the profile drill bit of ultra micro-grain quality carbide)(K10/HRF10/NRB10Z/MR11/PR40/PRA5/VRA201/VWA441/VWA431 etc. Super-thin twist drill (ultra micro-grain quality carbide/High-grade high cobalt powder steel. When producing in batch, we can produce forming drill bits with many kinds of apex angles, cutting-edge forms and μm dimension tolerance.


We can produce special, compound, special-shaped, super large, super thin, super long combined profile tools according to drawings, samples, size tolerance and application. Type of flute: (standard and non-standard 1-flute~12-flute series mill, reamer): deep groove, round head, end angle R, hollow, oblique flute (tapered), long flute, for aluminium, copper application, a chip-dividing groove (for rough mill application). Twist drill bits range in diameter from 0.002 to 3.5 in (0.051 to 88.900 mm) and can be as long as 25.5 in (650 mm).

The geometry and sharpening of the cutting edges are crucial to the performance of the bit. Small bits that become blunt are often discarded because sharpening them correctly is difficult and they are cheap to replace. For larger bits, special grinding jigs are available. A special tool grinder is available for sharpening or reshaping cutting surfaces on twist drill bits in order to optimize the bit for a particular material.

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  • Depth Drill
  • Depth Drill

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