Chrome plated piston tube, Telescopic tubes and Hard Chrome plated bars

ALTA is also a market leader in the machining of outside and inside surfaces of tubes, these are used as piston and telescopic tubes. Suitable for external chrome plating, available as electro welded or seamless.

The first operation, straightening and turning, removing defects which are always present in both the cold drawn and in the hot rolled tube, preparing it for grinding and chrome plating.

This non aggressive machining, gives straightness and roundness to the tube (outside honing to tolerance up to grade 8 and roughness Ra 0.4 my max) preventing micro fractures forming in the metal structure, which after chrome plating could generate cracks or pitting to the chromed surface.

Supported by carefully selected and approved partners, Alta offers chrome plated products produced by a continuous inline production method, which allows a homogeneous and concentric plating quality throughout the tube length.

All piston tubes can be treated with a passivation process aimed to increase the chrome resistance to atmospheric agents. The chromed piston tubes are Salt Spray Tested up to 120 H rating 9. Each item is rigorously checked and approved by ALTA and comes with the production certificate.