Precious Fabcast Pvt. Ltd. Manufactures Ribbed M.S. Plates Constructed Jaw Crusher. Precious Fabcast Pvt. Ltd. Is an ISO 9001: 2000 certified company. These machines are designed for primary crushing of the hardest rocks. The machine is constructed in heavy ribbed M.S. With strong and thick welding joints. Accurately machined and aligned, the Ribbed M.S. Plates features very thick, hard and tough adjustable toggle plate, heat treated, hardened alloy steel main shaft, proper lubrication system, high manganese steel jaw plates, hard faced side plates, impart a long life to this machine. Spring loaded safety tie bar protects Jaw stock against overloading. The production capacity and H.P. Of this machine depends on the physical properties and particle size of the material.