JIS G4304 standard specification for chromium and chromium-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications. JIS G4305 standard specification Cold-rolled stainless steel plate, sheet and strip delivery conditions.JIS G4304 or JIS G4305 standard ferritic and Austenitic stianless steel main steel grade:SUS XM27,SUS447 J1,SUS445 J2,SUS430LX,SUS430 and so on.