Barrel reparation depends on construction material.

Standard nitrited and hardened steel barrels:
Basic purpose is to restore the correct tolerance between barrel, screw and screw-tip in order to bring back the moulding to the original level.

Internal bushing:
The overlay (partial or total) is carried out in X155CrV121. We always propose an offer for a new barrel in standard nitrited steel and bimetallic as an alternative.

Bimetallic barrels:
If barrels are in Bimetallic material, the only way to proceed is to increase the inner bore with the renewing or supply of the screw and of a series of valves (interchangeable with the existing) suitable for the cylinder. In such case the feasibility of this type of renewing is based on moulding material.