The drill bit is a long, thin, slender rod-shaped tool with a long edge that is subjected to high bending stresses while drilling through dense metal. To prevent breakage or chipping of the drill bit, the material used should have sufficient bending strength and toughness. The main procedure of HSS TWIST DRILL BIT hardening is: preheating (secondary) → heating → cooling → straightening → tempering → straightening → inspection.

Diamond saw blades are a kind of cutting tool, mainly composed of two parts: the base and the cutter head, widely used in the processing of concrete, refractory materials, stone, ceramics, and other hard and brittle materials.

Hole saws refer to a kind of sawing class special circular saw for processing round holes in modern industry or engineering, which is simple and flexible to operate, easy to carry, safe, and widely used. The hole saws are installed on the ordinary electric drill, it can easily cut round holes, square holes, triangular holes, straight lines, and curves on any surface such as flat and spherical surfaces of various plates such as copper, iron, stainless steel, and plexiglass.

In addition, our factory has own heat treatment workshop and testing center, which controls the quality of various customer orders in an all-round way. The company has ISO9001, SGS, BV and other important certificates, our products are exported to the Americas, Europe, Asia and Africa, we have OEM c

Our products are exported to the Americas, Europe, Asia and Africa, we have OEM customized many international brands, and registered their own brand DMTOOLFOR, choose Daming, you will have a simple and happy tools life !

Danyang Daming Co., Ltd. was established in 2009. It is a comprehensive company specializing in drill bit,other drilling tools ,saw blades, other cutting power tools accessories. Our drill bits factories can produce various German and American standard high-speed steel drill bits ,Construction drill