East ChinaConstruction / Sandblasting

Air supply for steel-structure sandblasting at a coastal shipyard

Background

Blasting hull blocks before painting is a key shipbuilding step that needs long hours of steady, high-flow air. In a yard with grid power, blasting with diesel units means burning extra money every day.

Solution

Electric units cut running cost and noise, an outdoor-grade anti-corrosion finish copes with salt air, and total air was sized from the number of nozzles in use with a margin.

Results

Pressure stays steady with several nozzles running and the finish is more consistent; cost per cubic metre of air is much lower than the previous diesel solution.

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