Rock Drill Button Bits:
30mm, 32mm, 34mm, 36mm, 38mm, 41mm,43mm,45mm,48mm,51mm, 64mm,76mm,89m,102mm,115mm,127mm rock drilling button bits, drill bits, rock button bits manufacturers, button bits suppliers.
Thread: R22, R25, R32, R38, T38, T45, T51.
Tapered: 7 degs, 11degs, 12degs.
They widely used in railway, subway, highway, tunnel, mining, metallurgical engineering, water conservancy, etc.
They have been exported to Australia, Brazil, Japan, USA, Korea, Middle East, etc.