Wire rope hoist protection period defined

Rope hoist Protection Period: mid-points (5-15 years) and long term (15 years and above) Protective Life corrosive environments: minutes in C3 (general industrial environment), C4 high (coastal environments)
Rope hoistprotective Term definition:
1 Rope hoist in the design protection period, the surface does not exceed the ISO4628-3 rust rust grades in Ri3 level (equivalent to ASTMD610 of six or European standards Re3 grade)
2,  lift hoist  the main consideration gloss finish selection and color retention, 4 files, PU412 aromatic polyurethane topcoat, PU413 aliphatic polyurethane topcoat, PU421 polyurethane topcoat  Wire rope hoist  machinery, PU420 polyurethane engineering automotive finish.
3, no zinc primer (EPMisc.) consideration was mainly rust resistance and high solids, one can achieve a dry film thickness of 80 microns, optional epoxy zinc phosphate primer, epoxy bottom aluminum tripolyphosphate paint.
4, zinc-rich primer required dry film (or non-volatile medium) zinc content (not the metal zinc content) ≥ 80%. Such as the use of the level GB_T_6890-2000 zinc (metallic zinc content ≥ 96%), the dry film can be converted into (or non-volatile parts of) zinc content (not the metal zinc content) ≥ 76.80%. Can also be taken as inorganic zinc (zinc silicate) primer.
5, exported to Europe and the Rope hoist to be considered harmful heavy metal coatings (such as lead, chromium, etc.) content issues, zinc-rich primer should use high purity and low heavy metal content of zinc (as zinc ASTMD520 requirements), not with lead etc. lead chrome yellow pigment.
6, the most commonly used in the paint is epoxy painted iron, because iron thin cloud is not high, such as requiring a good surface appearance, good fineness can be replaced by an epoxy.