Product name:219mm MRS Wiggle reamer symmetric casing drilling bit in miningOD of casing pipe: 219mmThey are designed for economic cost of drilling in simultaneous casing advancement.The wings are retracted by ... Read More
Product name: 345mm MRS280 Overburden Casing Drilling System Bit For Quarry,Construction,Mining,Water Well Drilling OD of casing pipe: 280mm They are designed for economic cost of drilling in simultaneous ... Read More