1.the head of tungsten carbide tip is fired by vacuum
2.the product has passed the ISO9000/2000
3.coal mining bits

1.We can supply all kinds of RUIZUAN brand coal mining bits, sleeves and holders which have high strength, high wear resistance and long life features; The material of the steel body adopt the 42CrMo.The tungsten carbide tip adopt YG11C and YG13C.

2.Our product are widely used on excavation machines, shearers, coal mines, iron ores, aluminum ores, geotechnical engineering etc;

3.We can design and produce different bits according to different hardness of rock to satisfy customer’s different requirements;

4.We also can help our customers to design, produce and repair all kinds of cutter drums.

5.We can supply the following Bits and Holders:U82,U84,U85,U92,U94,U95,S120,S135,S150,U765K,U765HD,C31HD,AM511 etc.

repair all kinds of cutter drums.