Food Grade Stainless steel Dairy Tube/Sanitary tube ... TUBE2)According Standard:ASTM,DIN,JIS,GB,ect3)Material: 304,316L,304L,316,321,310S,2205etc 4 ... or as customers' request STAINLESS STEEL DAIRY TUBEMaterial Grade 304,304L,316 ,316L,321Standard A270,ectOuter Diameter ... corrosion tester, hydraulic tester, universal testing instrument for material, vortex and ultrasonic fault detection equipment, etc.Now ...