1.Semi-automatic spring coiling machine 2.coiling double-conespring, ERH2 Semi-automatic spring coiling machine This machine is used for coiling special specification spring of sofa and soft mattress lower basement, as ... :4-8turnsSpring height:150-300mmApplicable wire diameter:2.8-3.6mmProductivity: 38pcs/min,45pcs/min,58pcs/minMotor power: 1.5kw ...