Improve the service life of scrap steel clamp

The clamping frame is composed of four clamping claws,The arc plate of the clamping claws is made of NM400 instead of  alloy steel plate.we use wear resistance steel plate at the end and cored wire on the plate, hardness of product up to HB600-650, improved the claws abrasion resistance, the clamping frame service life increased by 1/3 at least.