Four rope clamshell grab is an efficient tool for loading and unloading sands, coal, mineral powder and bulk chemical fertilizer.The mechanical structure for opening&closing is succinct and original.It's easy to use and can work under any circumstances in order.The grab is equipped for the crane which has two hoisting drums and used for grabbing bulk materials.Because of its lower cost and higher quality, the grabs are widely used in ports, electricity, vessel, metallurgy, preservation and transportation, and are exported in batches. 20&40 feet container
