1,477 nq bits products are offered for sale by suppliers on alibaba, of which mining machinery parts accounts for 24%, drill bit accounts for 20%. a wide variety of nq bits options are available to you, such as tungsten carbide, diamond, and high carbon steel. you can also choose from plain, black oxide, and zinc nq bits, as well as from core drill bit, center drill bit, and twist drill bit nq …
Rc hammers the missile reverse circulation line of hammers are used in a wide range of drilling rigs in various geological formations. they are preferred by on-site geologists for their high percentage of uncontaminated sampling; their fast penetration rates; and their trouble-free, low-cost, and long life performance.
Anchor bolt: size: r38: diameter: 76mm-130mm: application: mine, tunnel, slope, foundation pit: material: steel: surface treatment: hot galvznized: mining support self drilling anchor bolt hollow injection bar . it is mainly applied in complex layer formation of broken rock, loose soil, weathering rock and so on which is difficult to make the ...
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