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Mandrels & Wash Pipes

Rainbow houses CNC machines, Thermal spray equipment & electroplating capabilities that allows us to provide entire range of services from manufacturing to repair of damaged mandrels or wash pipes. Most commonly Rainbow provides recoating of Tungsten carbide of damaged existing coatings giving the mandrel a new life for operation. The following coating processes are commonly applied on mandrels:

  • Tungsten Carbide Coating by HVOF process
  • HEEF Chrome plating
  • Nickel Sulphamate HEEF chrome plating
  • Shock Tools
  • Completion Tools

Rainbow can also upgrade existing mandrels that may have been manufactured with Hard-chrome plating to tungsten carbide coating which has proven to provide better corrosion and wear protection in the unforgiving conditions of the drilling industry. In case of deep damages on the coating area of mandrel, Rainbow can offer cost effective repair solutions for such damages. Rainbow can also carry out re-chasing of connections under the API monogram.