... is low ,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 ... %12. place of origin: changzhou city, jiangsu province, China13. port of loading:shanghai, China;14. package:plastic cloth with coils ...