DIN338 WHITE FINISHED DRILL BIT
Manufacturing Process:fully ground.
Material: HSS
Standard:DIN338
Sizes:0.2mm-20mm or 1/64"-5/8"
Surface Finishing:Black, Black & White, Coffee, etc.
Point Angle:118
DIN338 TIN COATED DRILL BIT
Manufacturing Process:Rolled & Polished.
Material:HSS
Standard:DIN338
Sizes:0.2mm-20mm
Surface Finishing:White, TIN coated, Rainbow Colour, etc.
Point Angle:118
Integral drill rods(integral rods or integral drill steels) are used for small hole drilling. Equipped with small power rock drills, like air leg rock drills, hand held rock drills, etc. integral drill steels can be used for drilling bore hole diameter from 29mm to 41mm usually. Integral drill rods are usually hexagonal with chisel tips or cross tips, the diameter are usually 19mm and 22mm. According to different application, different lengths are available from 600mm to 9600mm usually. With the best hollow drill steels and tungsten carbides, sinodrills integral drill steels will show you very good performance.
High-performance ground standard twist drill made from heavy-duty high speed steel. The fully ground twist drill has a precise concentricity. Thanks to the split point, this drill has good centring properties and requires little pressure.
High-performance ground standard twist drill made from heavy-duty high speed steel. The fully ground twist drill has a precise concentricity. Thanks to the split point, this drill has good centring properties and requires little pressure.
Material: Solid Carbide, Tungsten Carbide
Coating: Tialn, HE
Type: Solid Carbide Drills
Helix Angle: according to your demand ,non-standard products custom accepted
Tolerance: M7
Feature: Heat and wear resistance, special flute design and coating
Suitable for: Suitable for drilling generally steel, cast steel under HRC50, cast iron and stainless steel.
The screw Angle of twist drill mainly affects the size of cutting edge Angle, edge edge strength and chip removal performance, which is usually 25 32 Spiral grooves can be processed by milling, grinding, hot rolling or hot extrusion, and the front end of the drill bit forms a cutting part after grinding. The cutting Angle of the standard twist drill is 118, the bevel Angle of the cross edge is 4060, and the back Angle is 8 20. Due to structural reasons, the rake Angle is large at the outer edge and gradually decreases to the middle, and the transverse edge is negative rake Angle (up to about -55), which acts as extrusion when drilling.
we are a professional manufacturer of power tool accessories, we are specilized in various cutting tools and tool set, drill bits, hole saw, cutting discs, etc. Our Twsit drill bits are exported to many countries all over the world. We produce HSS twsit drill bits for metal working, carbon steel drill bits for wood working, and also masonary drill bits for concrete works. We provide OEM if you have large quantity, custom the twist drill bits as customers' request. We can produce various sets include different size in metric and inch. and hope we can start our cooperation in the future.
