... machine hydraulic systerm compact structure/reliable work tube bending machine &pipe bending machine &steel bending machineIt is a half-hydraulic 3 ... steel, flat steel, square steel, channel, steel, circle steel, pipe and so on. The machine is compact structure, reliable work ... of operator plate button:1),SBO: urgent stop button(red mushroom shape)2),SB1: coordinating use by rising button and display ...