Approx Grades

in China

For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits,

usd in geological prospecting, coal mining and oil well boring.

For coring crowns, electric coal drill bits, coal cutting picks, cone drill bits and scraping knife bits,

used in geological prospecting, coal mining and oil well boring.

Good strength and less wear resistance, for bits of rotary hammer rock drills and heavy rock drills,

for hard and very hard rocks.

Good strength and less wear resistance, for bits of rotary hammer rock drills and heavy rock drills,

for hard and very hard rocks.

Mostly used as the buttons of small and mediumsized percussion bits and

as the inserts of rotary prospecting bits to cut soft and medium hard formations.

Suitable to strips, conical buttons for rotary,percussion-resistant,

geological prospecting,buttons, cut soft and medium hard formations.

Primarily for the buttons and inserts of rotary percussion bits

to cut medium-hard and hard formations.

Primarily for the buttons and inserts of rotary percussion bits

to cut medium hard and very hard formations.

Largely for the inserts and buttons of percussion bits

and tricone bits to cut medium-hard, hard, and very hard formations.

Predominatly for the buttons of tricone bits and inserts

of rotary percussion bits to cut hard and vey hard formations.

YG15C