... Used for the Overheadcrane,Gantry Crane Introduction:JHQ-A Polyurethane Buffer for Crane1.Light weight, cheap, easy to repair, ... good chemical stability, good corrosion resistance, no noise in the buffer, no spark, is especially suitable for explosion-proof occasions. ... using special polyurethane material, foam structure of energy-absorbing buffer, suffered the equivalent of a spring with a pneumatic ...