Tungsten carbide composite brazing rods are manufactured using premium, clean, WC-Co particles. The quality of WC-Co particles allows for excellent wetting of the tungsten carbide particles during deposition, thereby virtually eliminating “ burnt” carbides and premature breakdown of the deposit. According to different working conditions, both sharp edged and blunt edged carbide are used. The former is suitable for cutting working condition, while the latter is for the mill working condition, mainly applied in the down-hole milling and fishing tools, centralizer.