Profile: Hangzhou Longway Machinery Co., Ltd is a manufacturer of air brake system components. We specialize in researching and manufacturing heavy-duty parts for trucks & trailers. Our products include trailer axles, manual & automatic slack adjusters, spring brake chambers, S-camshafts & hardware kits, brake shoes & hardware kits, hub caps, brake valves, quick release valves, wheel bolts, and different kinds of nuts. Drum brakes to be specific are made out of many components such as brake drum, pistons, shoes, and brake cylinder. Brake drum function has a connection to the disc brakes caliper. Our brake drum manufacturers fabricate their products from different rigid materials including cast iron, aluminum, and forge steel. It houses different composites of the drum brake system and needs to be resilient to many factors including rust & corrosion.