Prefabricated shop primed steelwork

Steelwork which has been automatically blast cleaned and then shop primed prior to prefabrications, always requires special treatment prior to the application of the main protective coating system. All damaged areas caused by mechanical and thermal damage or poorly primed areas, may rust and these must either be re-blasted or thoroughly cleaned by power tool or hand methods to an accepted standard. Re-blasting is normally required before high durability systems are applied and this should be specified wherever possible. This treatment is also preferred for welds and the adjacent steelwork which may not have been primed prior to welding.