Inquiry (采购产品): coating grade 75 I got your contact over the net. I have the following doubt about tin coated steel according ASTM A599M: "coating grade 75" means what? I suppose it defines the coating thickness, is it possible to answer our doubts (either in inches or mm). Thank you in advance. **** Hidden Message ***** Francisco Ferro 2135-116 SAMORA PRT Company: INCOMPOL Title: Quality Engineer E-mail: francisco.ferro@incompol.pt **** Hidden Message ***** francisco.ferro@incompol.pt