... , without load, then take down the lifting clamp.Notes of using the plate steel lifting clampSuspension and hanging work should be proceeded ... between tooths, wear state and other abnormal phenomena.Vertical steel plate lifting clamp Usage: lift the plate horizontally Load range: 1-16t ... lift ,down when unload.When the spring relax, the plate can be away the clamp.the test load of DSQ1,DSQ2,DSQ3 ...