CL20 high-quality alloy toothed chain pitch 31.75 mm, inner-directed, 31 ..

CL20, 31.75 mm pitch, 31, within the guided Supplying spot. Ning County Rongda Machinery Co., Ltd production of silent chain using a special heat treatment process to solve the heat treatment, but now the domestic-related issues, chain by chain and special steel forging pieces made of heat-treated thickness of 0.2mm, external hard in the soft, Such processing technology to solve the big deal with hardness, and fragments. Processing hardness small, do not wear problems, greatly extend the life cycle.