Where by corrosion may well current a problem (such as on metal) the element ought to be Beforehand plated with no less than 0.0002” of Electroless Nickel plate. Typically gun elements can be plated specifically with out a foundation primer of nickel. Ideal for every type of guns, motor pistons, https://holdenzsiwj.bloginder.com/38377802/cibse-approved-cpd-no-further-a-mystery