The drying, rolling and vulcanization processed of production in rubber industry are all need large amounts of steam. Dongrun Special Rubber & Plastics Co., Ltd. is one of the most professional industrial rubber production bases in the country. It produces special rubber sheets, rubber sheets for industrial use, anti-skid fitness series and rubber seals for sluice gates. It has complete specifications and over 10,000 varieties. This time we are particularly in purchasing boiler, especially the steam boiler efficiency, Dongrun put forward very strict requirements. ZOZEN boiler manufactures a 4-ton DZL coal-fired steam boiler for Dongrun. The boilers belong to the horizontal three-pass water-fired-tube chain grate boiler, which can use mean-quality bituminous coal and anthracite. Threaded tobacco pipe is also a high-efficiency heat transfer element researched by ZOZEN for many years. Its heat transfer coefficient is 1.8 times higher than that of ordinary tobacco pipe.
