Hand Mouldings

GP hand-moulded iron castings – a good choice

At GP, complex machine parts made of lamellar graphite or nodular graphite cast iron are manufactured near net shape with large differences in wall thicknesses using hand moulding.

Cast iron is an easily machined material and offers advantageous vibration minimization, damping, and smooth running and failsafe running characteristics.

This permits quiet running and higher precision with machine tools. Where cast iron with nodular graphite is concerned, ideal mechanical characteristics are added to this.

Thus it is highly advisable to use cast iron components by GP for high quality machines.

GP simulation

At GP, casting and solidification simulations, as well as finite element analysis, are used when planning the casting process.

GP dimensions

GP produces hand-moulded castings in made-to-order production with piece weights of 10 to 160 tons.

For round parts, the casting pits permit lengths of 3 to 9 metres and diameters of 3 to 6 metres.

All other parts can be realized starting from 10 tons finished weight with dimensions up to 16 metres long, 4 metres wide and 3 metres thick.


GP produces hand-moulded castings using the following materials:

  • Lamellar graphite cast iron as per EN 1561
  • Nodular graphite cast iron as per EN 1563

All quality-relevant processes are monitored within the framework of GP’s quality management program.

Examples of use

  • Machine beds
  • Columns
  • Crossbeams
  • Carriages
  • Tailstock and headstock cases
  • Tables and palettes
  • Bushings
  • Hydraulic blocks
  • Storage and transport containers
  • Mill stands
  • Casting and steelworks moulds