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 Austenitic stainless steel main steel grade:SUS312L,SUSXM15J1,SUSXM7,SUS347,SUS321 and so on.