... ,quality is good and competitve price plain steel tube 1.Materials: bao steel ,low carbon steel strip2.Main use: widely used in wire ... -tube condenser, evaporators,refrigerator , refrigeration, chiller, heaters, freezer etc3.outer diameter: 4mm,4.76mm,6mm,6.35mm,8mm 4. ... of Enviroment Management System7.surface treatment: no coating ,and bright 8. Features: soft and east to bend 9.tensile ...