Tri-cone Rotary Bits - For Mining

We specializes in manufacturing Tri-Cone Rotary Bits - For Mining and drilling equipment for petroleum&gas, water well, mining and tectonic industries, oil field, construction, geothermal, directional boring, and underground foundation work all over the world.
Available sizes:
60mm,65mm,76mm,93mm,95mm,98mm(3 7/8a ),101.6mm,114mm,118mm,120mm,127mm(5a )
130.1mm(5 1/8a ),133.3mm(5 1/4a ),139.7mm(5 1/2a ),142.8mm(5 5/8a ),149.2mm(5 7/8a )
152.4mm(6a ),155.5mm(6 1/8a ),158.7mm(6 1/4a ),161.9mm(6 3/8a ),165.1mm(6 1/2a )
190.5mm(7 1/2a ),193.6mm(7 5/8a ),200.0mm(7 7/8a )
212.7mm(8 3/8a ),215.9mm(8 1/2a ),222.2mm8 3/4a ) 241.3(9 1/2a ),244.4(9 5/8a ),250.8(9 7/8a )
269.8(10 5/8a ),295.3(11 5/8a )
311.1(12 1/4a ),346.0 (13 5/8a ),349.2(13 3/4a )
374.6(14 3/4a )
381(15a ),393.7(15 1/2a ),406.4(16a )
444.5(17 1/2a ),508(20a ),558(22a ),609.6(24a )
660.4(26a )