25mm-350mm Diamond Core Drill Bit For Stone, Concrete, Bricks

25mm-350mm diamond core drill bit manufacturer, for stone, concrete, bricks.

Process classification

1. Sintered: divided into cold pressing sintering and hot pressing sintering, pressed and sintered.

2. Welded: divided into brazing and laser welding. 

3. Electroplated (brazed): the blade head powder is attached to the substrate by electroplating. 

Strict quality management system, Before products are shipped, they have been rigorously tested, and the defective rate is less than 1/10000.

If the product has quality problems, we will replace it and resend it to you for free. 

  Support customized specifications, OEM, ODM.

  We are a manufacturer located in China, not a trader, no middlemen to make a profit.

  Buy in bulk to enjoy more discounts.

If you can't find the product or size you need on our website, please contact us via Whatsapp, phone or email.