*board sheet
The global structure using cold-rolled steel plate with strong security architecture and standard square tube inside. The door is anti-wind, posses the characteristic of high impact resistance.
*surface
The surface of electrostatic spraying process of polyurethane powder coatings. Corrosion-resistant structure design of metal components are used. The paint pieces all using high-performance anti-corrosion primer. The surface of the paint is uniform, smooth. The colour of electroplated layer would not desquamate. Anti-ultraviolet, antitarnish. With strong adhesion ande unease to powdering.
Standard: din338
Material: hss4241, hss4341, hss9341, m42; m35; m7; m2, etc
Finish: black oxide, polished, tin coated and rainbow etc
Process: roll forged, half ground, fully ground
Point angle: 118 or 135 split point
Application: for drilling cast steel, malleable iron, sintered metal, non-ferrous metals and wood, etc
Packing: by plastic bag, metal box etc
Diameter ranges from 1mm to 20mm.
Drill sets like 13/19/25pcs are available. We make them in accordance with your demand.
By plastic bag, metal box etc
