fully ground twist drill tin coated

Diamond disc is For heavy duty cutting /granding of concrete.asphalt.granite and marble .the high frequency electrical brazeing and tough segment design provide for exceptional performance and high productivity

Can be easily fitted to machions.A wide range of size to meet the broad needs of the work environment.

Wood disc also all size avaiable.and all designs.for kinds of wood.aluminum,stainless steel.

Drills is easily fitted to light drill machions,All size is available.be able to hit super power,completely passed to the edge overall bits. the integral design from chuck section to cutting edge offers outstanding performance in piercing and deep drilling work.the integral congiguration from shank to cutting edge enables reliable drilling.

Type: Twist Drill Bit

Material:M2,M35,M42,F4341,9341 or 4341. HSS-Co5%

HARDNESS:HSS hrc63-66

HSSCO HRC64-68

Manufacturing process:

Roll ground

fully ground

milled

Point angle: 118 Degree, 135 Split Point

Application: alloy steel, unalloyed Steel, iron, cast iron, non-ferrous metals

International Standard:

Roll Forged       DIN338                   DIN340                       Jobber Length    

Half Ground     DIN338                   DIN340                       DIN1897                                 Jobber Length

Fully Ground     DIN338                  DIN340                    DIN1897 

HAMER DRILL