coal bit 1.used in coal mining,geologic drilling 2.long useful life, high efficiency, wide using range

coal mining bits/coal mining cutter teeth/tungsten carbide drill bits/coal bits

Product description:

The coal bits are mainly used in coal and mine drilling, have dry-type & wet-type.

Dimension: 25, 27, 28, 29, 30, 32, 36, 42 mm.Normal Thread Model: M16*2; M14*1.5, M12*1.75; M14*1.5; M12*1.75

We can do different measures according to customer's  points.

Colliery Drilling Tools	Main Standard(mm)
	D	H	L	M
Thread joint	27	44	17	M14×1.5
	27	54	17	M12×1.75
	28	54	20	M12×1.75
	29	52	18	M14×1.5
	30	50	18	M14×1.5
	32	52	22	M14×1.5
	32	56	22	M12×1.75

coal bits/coal mining bits/tungsten carbide drill bit