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Dth drilling tool ql50 down the hole dth drill bits 105-130mm diameter black 2 inch dth drill bits , down the hole hammer bits for shank br2 api 2 3/8'' thread blue color 165mm 3 wings drag bits for water well drilling

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.

28 oct, 2020 button bit (thread bit) we purchase buy dth hammer, dth bit, excentric overburden drilling toll (odex), threaded drill bit, retract button bit, drill rod, drill pipe, shank adaptor, coupling sleeve and other drilling spare parts, which are widely used for mining, quarrying, tunneling, mineral exploration, open blast hole drilling, water well drilling, geological prospecting, civi ...

China api spec 5dp oil drill pipe 89mm g105 or s135, find details about china 3-1/2", api 5dp from api spec 5dp oil drill pipe 89mm g105 or s135…

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