Home > 140mm DHD 350 dth hammer buttons bit for down the hole drilling

Pneumatic crawler drill mining dth hammer bit factory for gold mining equipment. company introduction : xiamen zhao xing electrical equipment co., ltd. was established in 1996, with extensive experience in drilling area.

Aug 14, 2020 · since its beginning in 1985, numa has become a major manufacturer of dth hammers and bits for the domestic and international drilling industry. the company designs and builds downhole hammers and bits for drilling vertical and horizontal holes 3½ to 50½ inches (89 to 1,283 millimeters) in diameter. to learn more, visit www.numahammers.

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9/16 to 1-1/4", 118° point, oxide finish, high speed steel reduced shank drill bit set 10 piece, standard point, 6" oal, 1/2" shank diam msc# 02387587 hertel in stock

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