Zirp is a cold galvanizing compound designed to comply with astm a780 requirements for the touchup and repair of damaged hot dip galvanized coatings. A123 standard specification for zinc hotdip galvanized coatings on iron and steel products. Astm a780 practice for repair of damaged and uncoated areas of hotdip galvanized coatings details how to repair a damaged hotdip galvanized coating regardless if it is immediately after galvanizing or once it is in the field. The specification explains how to use the various repair methods as well as the required coating thickness for the repaired area. Contains an additive which results in less smoke and. Ensuring conformance to astm a780 american galvanizers. Galv what does the cold galvanizing process consist of. Cold galvanizing products for 6995% include brite zinc and first zinc aerosol spray can, brite pen galvanizing touch up pen, brite zinc and first zinc gallon cans offered by site pro 1. Soldering is done with zincbased alloys in either a stick or powder form. The zinc coating is difficult to damage, and field fabrication that requires removal of the. Hotdip galvanizing for buildings and architecture construction. Topics include proper materials to use while astm a780 the process, as well as specifications to follow and proper application of the repair materials. Astm d 1 jan buy astm d practice for preparation of zinc hotdip galvanized coated iron and steel product and. Jul 30, 2019 cold galvanizing is a zinc salt solution by electrolysis, to the plating on the coating, in general, which do not have heating, the amount of zinc rarely encountered humid environment is very easy.
Cold galvanizing is actually zincrich paint, not immersing steel into molten zinc to form a metallurgical bond. All bsi british standards available online in electronic and print formats. Do not average the readings, as this requirement was removed from the specifications in galv touch up methods dr. Galv what does the cold galvanizing process astm a780 of. Astm a780 a780m092015, standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings, astm international, west conshohocken, pa, 2015. High percentage of pure zinc dust in an epoxy resin formulation produces a film providing years of protection. At the galvanizing facility, zstm maximum allowable repair size for iron and steel products per astm a is no more than 1 inch 2. Cold galvanizing compound by crown, sprayon, and zrc zinc. When it comes to repairing galvanized steel in the field, there is no limitation to atm size that can be repaired. Galvalox cold galvanizing compound galvanizing alternative. The specification explains how to use the various repair methods as well as the required coating thickness for the.
Astm a780 repair of damaged and uncoated areas of hotdip. Jun 25, 2019 galv what does the cold galvanizing process consist of. Resists oxidation, and the galvanizing protection continues even if scratched. Incorporating these design practices along with those listed in astm a385. High performance 7000 system cold galvanizing compound. Instantly galvanize metal surfaces to protect them from corrosion with rustoleum stops rust cold galvanizing compound spray. Instantly galvanize metal surfaces or repair worn or damaged galvanized steel with rustoleum high performance 7000 system cold galvanizing compound. Zincclad cold galvanizing compound sherwinwilliams. Newly galvanized parts with this typical pure outer zinc layer are highly. Cold galvanizing is a zinc salt solution by electrolysis, to the plating on the coating, in general, which do not have heating, the amount of zinc rarely. The damage may be the result of welding or cutting flame, in which case the coating will. Astm a78000, standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings, astm international, west conshohocken, pa, 2001.
This 93% pure zinc coating applies a galvanized film with cathodic protection, which resists rusts, scratches and chips. Welding to galvanized steel per astm a780 hendrickson. Astm a780 practice for repair of damaged and uncoated areas of hotdip. Astm a780 00, standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings, astm international, west conshohocken, pa, 2001. This will provide protection and give similar appearance to galvanized steel.
Cold galvanizing compound can be used as an alternative to hotdip galvanizing. Astm a780 00 standard practice for repair of damaged and. Repair damaged galvanized coatings with zirp zinc rich cold. Specifying and detailing for h igh quality galvanized coatings are obtained when steel assemblies are designed to promote unrestricted. Aug 02, 2019 there is no astm specification which specifies a maximum allowable repair size for galvanized items already accepted and delivered. A basic understanding of how steel is handled in the galvanizing plant and what the steel undergoes in the application of. Astm a780 standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings. The practice is the same, but there are more restrictions to the allowable repairs on a new product than one that has been in service. Astm a contains three acceptable methods of touchup and repair of hotdip galvanized steel. Astm a780 standard practice for repair of damaged and uncoated areas of hotdip galvanized. Cold galvanizing includes brite zinc spray, first zinc. Submittal data cold galvanize coating 93% zinc rich.
The coating contains 95% pure zinc in the dry filmfor maximum corrosion resistance. Standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings. Electrochemically bonds with iron and steel, and actually fuses with the base metal to provide rust and corrosion resistance. A senior engineer at our company says that the fabrication requirements to have steel galvanized. Looking for sprayon cold galvanizing compound with 250 to 350 sq. If the following conditions are present, we recommend repairing the affected areas with zincrich paint. Astm a780 a780m 092015 standard practice for repair of. Astm d standard practice for preparation of zinc hotdip galvanized coated iron and steel product and hardware surfaces for painting. The most common are a123, a153, a780, a385, a384 and a143. Astm a780 a780m 092015 standard practice for repair. Zincrich galvax stops rust and corrosion caused by welding and atmospheric exposure. For nearly 30 years, its premier product brite zinc has been the industry choice for the onestep. Meets or exceeds the performance requirements of astm a780, milp26915c, milp46105, dodp21035a, sspcpaint 20.
Standard specification for zinc hotdip galvanized coatings on iron and steel products covers guidelines for zinc coating galvanizing by the hotdip process on iron and steel products made from rolled, pressed, and forged shapes, castings, plates, bars, and ships. Standard practice for safeguarding against warpage and. A cold galvanizing primer that contains 93% type i inorganic zinc in the dried paint film. Repairing hdg steel american galvanizers association.
Standard practice for safeguarding against warpage and distortion during hotdip galvanizing of steel assemblies1 this standard is issued under the. Brite products is an innovative leader in the manufacturing and distribution of zincrich coating solutions for longterm protection of steel. While daam galvanizing can perform these repairs, theyre rarely required because of the low corrosion potential of damaged areas. Cold galvanize coating 93% zinc rich is a product in the maintenance of metals category that meets astm a780, b117. Find astm a780 products and abstract using the buildsite database. The best repair procedure is metallizing to astm a780 a3. Astm a780a780m 092015 standard practice for repair of. Astm a780a780m 092015 standard practice for repair. A number in parentheses indicates the year of last reapproval. Aug 01, 2016 in order to ensure strict adherence to the specification astm a780 when performing repairs at the galvanizing plant, the galvanizer should be well versed in the equipment, materials and surface preparation standards required of each repair method. The design of products to be hotdip galvanized after. Astma780 standard practice for repair of damaged and. Zrc cold galvanizing products are also certified for steel priming, in order to give greater variance in features.
To ensure that a smooth reconditioned coating can be effected, surface preparation shall extend into the undamaged galvanized coating. Astm a780 standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings coatings zinc. The primary components of hotdip galvanizingzinc and steelare. A780 a780m092015 standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings hotdip galvanizing coating damage repair zinccoated steel products. Although some of the requirements within astm a780 are relatively straightforward, other requirements related to surface preparation often require. Galvalox cold galvanizing compound is formulated to perform in very corrosive environments and is ideal for repair and maintenance of damaged hotdip galvanized metal. Twoyear rustproof guaranteemaximum corrosion protection. Easy online ordering and nextday delivery available with 247 expert product support. Cold galvanizing products can be brushed, rolled or powersprayed onto the steel surface. Astm a780 practice for repair of damaged and uncoated areas of hotdip galvanized coatings. Find submittalready datasheets, sds, specs, icces reports. Apply this flat gray cold galvanizing compound from rustoleum professional on your interior surfaces to get a galvanized finish.
In order to ensure strict adherence to the specification astm a780 when performing repairs at the galvanizing plant, the galvanizer should be well versed in the equipment, materials and surface preparation standards required of each repair method. A cold galvanizing primer that contains 86% type i inorganic zinc in the dried paint film. Astm a780 a780m 09 standard practice for repair of damaged and uncoated areas of hotdip galvanized coatings. The process of cold galvanizing is described in astm a780. Purchase your copy of astm a780a780m 092015 as a pdf download or hard copy directly from the official bsi shop. Spragalv zinc rich weldthru primer seymour of sycamore. Sprayon cold galvanizing compound with 250 to 350 sq. Gme supplys cold galvanizing paints are available in flat and silver finishes by crown, sprayon, zrc, and zinga.
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