... flat bar grade 304 1. stainless steel flat bar grade 304 introductionStainless steel flat applies to petroleum, chemical industry, electric power ... and Chemical,Medicine, Food,Mechanical,Aerospace,Architecture,Military Industry,Hardware,Gas Boiler,Heating Equipment,Shipping,Machine Component,Building ... . Is dealing with many kinds of stainless steel, material grade of 201, 202, 301, 304, 409, 410,430 ...