... offers inexpensive and high-quality stainless steel tubing Standard:GB /STM/ASME/JIS/DIN/EN.etc. stainless steel tubingO.D.:38mm-325mmW.T ... .Inner packing: bundles or wooden cases or according the customersstainless steel tube:Grade304, 304L, 316, 316L,316Ti, 310S, 321 ect.StandardsASTM ... industry, food machinery, water supply, boiler heat exchangers etc. Stainless steel tubing