... and closing.3.Durable,have the best performance,high automation,can be used as mechanical equipment.4.Use steel ... water conservancy project.2.Lifting and closing different water gate.Lifting heavy things. Single lifting points main parameters: ... electric gate hoist,manul gate hoist;Winch gate hoist,screw gate hoist;Large gate hoist,small gate hoist;Single point gate hoist,double points gate hoist ...