We EPG group one of the Biggest Chain and sprocket manufacturer in China. We provide you most type of industry chains, agricultural chains, conveyor chains and related sprockets etc……..

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This Firstly: innovative product engineering. We are continuously improving well-proven and established products in the areas of drive and conveyance technology or are looking for possible innovations. One example for this is the maintenance-free chain. Secondly: excellent production engineering. Our production processes are also constantly improved upon. Quite frequently effective, new products are only possible because of innovative production methods. Thirdly: competent application consulting.EPG was awarded with “famous product of Zhejiang Province” and “famous brand of Zhejiang Province”.assistance needed.D12B21 sprocket with a stock bore is a metric roller chain & sprocket sprocket manufactured under ISO and British Standard 228. Our D12B21 sprockets are made with reliability and performance in mind, so we use high-quality carbon steel (CS) and have the sprocket precision cut to ensure maximum performance and wear life. Besides the stock bore we also can supply these sprockets with a specific plain or finished (has key-way and set screws) bore size. We also offer upgrades on our double D12B21 sprockets such as black-oxide coatings and heat-treated hardened teeth, though we often have these specific sprockets with those features already added right off the shelf. Besides the 21 tooth sprocket, we also stock a high-quality 12B-2 roller chain & sprocket