3-D internally finned tube
bi-metallic finned tube
finned tube
翅片
鳍片
螺旋翅片管
翅片管
鳍片管
肋片管
加筋管
翅管
凸片管
finned tube heat exchanger
翅片管式换热器
翅片管换热器
翅片式换热器
套片式换热器
High-screw-thread finned tube
internally longitudinal finned tube
three-dimensional finned tube
Heat Exchange Tube and Tube Sheet