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This procedure covers the minimum requirements on the surface preparation and application for the touch-up/ repair painting of damaged external surfaces of structural steel, galvanized surfaces and process piping.
This procedure covers the minimum requirements on the surface preparation and painting / coating for the touch-up and repair of damaged external or internal surfaces of existing structures and facilities including structural steel works, process piping, pressure vessels, galvanized surfaces and equipment. PURPOSE.
18 de sept. de 2002 · 10.5.3. Is the fabricator/erector responsible for field touch-up to the repair of blemishes and abrasions that result during handling and storage after painting?
Touch-up materials are required to meet a coating thickness of at least 2.0 mils (50.8 µm) for one application, and the final coating thickness of the repair area is dictated by the material used to do the repair. ASTM A780 contains three acceptable methods of touch-up and repair of hot-dip galvanized steel:
Touch-up Paint on Steel Structure - Free download as PDF File (.pdf), Text File (.txt) or read online for free.
18 de sept. de 2002 · In building structures, steel need not be primed or painted if it will be enclosed by building finish, coated with a contact-type fireproofing, or in contact with concrete. When enclosed, the steel is trapped in a controlled environment and the products required for corrosion are quickly exhausted.
The touch-up and repair of hot-dip galvanized steel coatings is important to maintain uniform barrier and cathodic protection as well as ensure longevity.
