KASIN chains are designed for chain conveyor system. There are different types of conveyor chains, inculding hollow bearing pin chain, solid bearing pin chain, deep link chain and drop forged chain. Manufacturing process of drop forged conveyor chains Machining: Our advanced cnc machining centres guarantee a superior and permanet quality. These machining operations include milling, drilling, boring, ect. Machining will ensure prefect assembling and working. Heat treatment: Heat treatment can ensure a uniform surface hardness and depth. Heat treatment is the heart process for making drop forged conveyor chain. By many years' experience, we well know how to do heat treatment to achieve the best working performance. Quality testing: Each chain link will be checked and tested in our testing room,especially for hardness. And the testing result will be placed in our well organised database so that it can be checked at any time.