5pcs Hss Step Drill Bits - manufacturer, factory, supplier from China

Recently, through the application of new drilling speed-increasing processes such as hybrid drill bit and sharp-toothed PDC drill bit, Shunbei 1-8H and Shunbei 1-9 respectively created 111.83 days...

Abstract Minimum bore diameters with lower tolerances require very precise and rigid tools, especially for deep drilling. ZechaHartmetall-Werkzeugfabrikation in a microscopic individualized coating...

Since the second half of last year, the strengthening of oil prices has revived the exploration and exploitation of upstream oil and gas. This will undoubtedly bring continuous benefits to...

Diamond drill bits (PDC drill bits) Diamond composite drill bits are known as diamond drill bits. The drill is a one-piece drill, the whole drill has no moving parts, the structure is simple, and it...