Our specialization; long and thin piston rods

Griekspoor Thermal Coatings is pleased to carry out their specialization in the coating of very long and thin piston rods. In this case for a foreign gouvernement!


The piston rod is used to control the water flow to generate power, in a hydro power plant. It is the last one in a series of three and has a diameter of Ø210mm and a length of 20,32 meters. Coating length is 18,66 meters.


Advise application TOPCOAT®+

We grind and polish the piston rod. The coating we use is TOPCOAT+. This coating is similar to TOPCOAT® ceramics, however the plasa sprayed nickel-chrome based adhesive layer is replaced by an HVOF sprayed nickel based superalloy (TOPCOAT® 177). As a result the corrosion resistance, chemical resistance, and therefore the operational reliability are improved. Typical applications are the same as those of TOPCOAT® applications:

  1. Hydraulic parts, e.g. piston rods
  2. Plungers
  3. Components in the automotive industry
  4. Wear resistant sealing surfaces
  5. Wear resistant sleeve bearing surface
  6. Replacement and recoating of Ceramax


Download Product Datasheet     Example seal construction

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