... expand,flare,fold tubes in one cycle Vertical expanding machine is special equipment for expanding heat exchange ... The pressure oil is the motivity of this machine. By mechanism, it will finish expanding, flaring ... welding junction. Gneral Expander Main technical ModeYZL-vertical expanderspecificationdiameter,mm7,7.94,9.52thickness,mm12.7 ... parameter according to the contract Vertical Expander Machine