... heat exchanger,machinery and hardware fields7)Standard: Standard: AISI, ASTM, DIN, GB, JIS, And SUS, etc CommodityASTM stainless Steel plate/sheetDescriptionstainless ... ,Surface: 2B, BA, NO.4, NO.3 StandardAISI, ASTM, BS, DIN, JIS, ENMaterialTP304, TP304L, TP310 / S, TP316L, TP316 / 316L dual grade ...