... the head of tungsten carbide tip is fired by vacuum; 2.Specification:S135, S120, S150, U765, etc 3.Coal mining suppliers ... to Target Projects, PDC tip is also available for very high performance.Process:According to the customersdrawings or ... line of tooling and accessories for Mining and Mineral ground tool,Foundation drilling,Horizontal directional drilling(HDD),Trenching,Hydraulic millingcutter, ...