Series Tubing O.D.
Metric size		 Tubing O.D.
Inch size		 Color Fluid
T/TIA φ4，φ6，φ8，φ10
φ12，φ16		 φ1/8''，φ3/16''，φ1/4''
φ3/8''，φ1/2''		 Black, White, Red, Blue, Yellow, Green Air, Water
Turbine oil class 1
(ISO VG32)*1