... packing: bundles or wooden cases or according the customersstainless steel tube: Grade: 304,304L,316,316L,316Ti,310s.312stainless steel ... tube:Grade304, 304L, 316, 316L,316Ti, 310S, 321 ect.StandardsASTM A213, ... petroleum, medicine, electronic power industry, natural gas industry, food machinery, water supply, boiler heat exchangers etc. Stainless tube