1.Description of center drill bits

2.Application&Material&Coating of center drill bits

1). Center drill types are commonly used to drill holes which provide small diameters. Mostly used to create pilot holes, they are very useful as they can guide the worker to correctly perform the holes he needs. Once the hole is located in the right place, the center drill has to be replaced with a normal drill which provides the right diameter. However, in order to use the center drill, you have to provide the proper lubricant so that the drill’s tip is not going to be twisted off while performing a specific task.

2). The center drill requires a special type of material that is commonly used to fabric the finest tools. Different types of steels ensure the material which is needed to engineer various center drill types. The materials are used to fit different specifications so that the applications can be easily completed. As well, the drills are commonly coated with special sealing layers which improve their cutting characteristics. The protective coat extends the life of these magnificent tools.

A type

B type

Packaging & Shipping

Packaging Detail:    1. One plastic pipe pack one piece,10 pieces per set
                              2. Use the air bubble paper to encase the plastic pipe
                              3. Put the goods encased with air bubble paper into the carton
                              4. Other packaging will be accept according your needs

Delivery    Detail:    5~15 work days that depends on your quantity

Service We Can Offer You:

Zhangjiagang Ruizheng Tool Co., Ltd. is a professional manufacturer of carbide cutting tools, and professionally manufactures and sells solid carbide circular saw blade , slitting cutters, CNC end milling cutters, angle milling cutters, V-cut knives, and paper cutting knives. And we can produce all kinds of non-standard cutting blade according to customers' drawing.

• If you have any questions or need any assistance from us, please feel free to contact us on trade manager.
• We will try our best to reply to your queries within 24 hours; some delay might be caused during weekends or holidays.