Straight Shank Twist Drill Bit Set Metal Drilling Bit

Straight Shank Twist Drill Bit Set Metal Drilling Bit

The high speed steel metal drill bits are suitable for metal hard alloys such as stainless steel, steel,high carbon steel,quenched steel,cast iron, and softer copper and copper alloys such as wood and aluminum alloy.Not applicable to glass or ceramic materials.Not applicable to heat-treated steel and pay attention to control speed, pressure and heat when drilling. Put it in drill bits organizer after use to prevent the drill bit from getting damp and rusty

company profile

ZhongZuan(Chongqing)Precision Tool Manufacturing Co.,Ltd was founded in 1995 and has been specialized in researching and developing and producing the high-quality hole saw bits and drill bits of electric tools for 26 years. Factory is located in Chongqing, China and has an area of 11700 square meters with registered capital over RMB 5millions and over 120 employees. Our core products are diamond hole saw bits, HSS twist drill bits and alloy hole saw and drill bits, so far we have been cooperated with customers from over 10 countries in the world.

We have completely established a set of effective quality management system and strictly implemented the quality standards required by customers in the production process like from the selection/ inspection of raw materials to process control and the final inspection of finished products to improve the products’ quality which help reduce the rate of unqualified.Meanwhile, company regularly carries out the internal audit and management review of the quality system to correct the problems in the operation in time so that our products will have more market competitiveness in the industry.