Baoding model electric drum roller _ news _ [Recommended] electric drum manufacturers | Handan day standard provided by day-standard fasteners. Handan City days Standard Fastener Co. (www.hdtbjgj.com) is a business alliance Handan quality certified company, has a day mark and other brands, has a good reputation, honesty, service-oriented "business alliance customer clicks on the page "Icons, we will be happy to serve you! Handan City days standard fasteners, Ltd. mainly produces roller, supply electric drum, plastic drum to provide the latest package price quotes, prices include electric drum, drum wholesalers, including plastic drum Specifications Model electric drum, electric drum role, drum sales ranking standings and other information packet plastic drum, for businessmen to provide the most valuable information pack plastic drum. Drum roll main body of the early production vehicles, static balance early school interference spindle head assembly welding, fine cars and fine balancing school and other processes components. If the tolerance for behavior such as roundness, cylindricity and straightness requirements in 0.2mm or less, then after finishing the cylindrical grinder or need to roll grinder grinding. There are requirements for surface hardness electric drum manufacturers, you need to increase the heat treatment process. Handan City days standard fasteners, Ltd. mainly produces roller, supply electric drum, plastic drum to provide the latest package price quotes, prices include electric drum, drum wholesalers, including plastic drum specifications, electric drum role of electric drum structure, drum sales ranking standings and other information packet plastic drum, for businessmen to provide the most valuable information pack plastic drum. Roundness tolerance barrel roll after a good skin should not exceed 0.5; 5) Material: Q235 steel, yield strength of 235 cow / square meter; For medium-sized drum set and light drum set, when the wheels of the roller diameter greater than 220mm, with a cast steel drum group for the light, when the hub diameter less than 220mm, the use of hot-rolled bar, should be consistent with national standards.