Almost all parts in this industry are chrome plated from the factory. However, the industry standard for chrome thickness is one mil (or .001”), just enough to last through the warranty period. When the chrome wears through, then corrosion sets in which leads to galling and scratching and eventually seal failure and loss of pressure.
Ordering new parts is very expensive and sometimes takes several weeks. Not only are you receiving a part that costs more and won’t last as long because of the thinner plating, but you also have to deal with down time waiting for the part.