S.S is a type of metal product that is more resistant to rust, staining & corrosion than regular steel. It is an alloy of iron & carbon. Stainless steel is often found in materials used in construction & tools. Grades & Specification 304, 304L Standard 18/8 grades 310, 310S High-temperature resistant grades 316, 316L Improved resistance to pitting corrosion in chloride environments