We are one specialist maker of rock drilling tools, founded in 1958. Our main products include rock drill bits and drill rods, for mining, quarrying, tunneling, geological prospecting, mineral exploration, water well drilling and oil well drilling.

Tricone bits (rotary bits) are our mainly manufactured item, of which various sizes and styles are applicable for drilling different kinds of rock formations, from soft, medium hard to hard, very hard formations.

Our tricone  bits are devided into two series: steel tooth tricone bit and TCI tricone bit, both of which are used for mining, piling, water well drilling or oil well drilling.

The bits are processed strictly according to API standard and ISO9001-2000 standard, for which good quality could be asssured to you.

If you are interested in our products, please contact us     zzeasttools(at)gmail(dot)com