We are the leading manufacturer for various kinds of drill bits. Details are as following:
1.Standard: 1.0-25.0mm for DIN338,DIN1897,DIN340;1/16”-1” for ASME,screw machine,taper length.
2. Steel material: M2(6542),M35,M42,HSS9341,HSS4W341,HSS 4241
3. Process: fully ground, milled, polished, roll forged
4. Point angel: 118degree, 118degree split point, 135degree split point
5. Surfce finishing: bright finished,black oxide, Tin-coated, black & white, black & gold, coffee color.
6. Shank: straight shank, reduced shank, taper shank
7. Hardness: 63-66HRC
