In the following years, a variety of application is extended to seal asphalt roof waterproofing layer. Asphalt was cheap, asphalt pavement reinforcement very expensive that only the rich can use private road asphalt reinforcement surface. Asphalt was first used on the bridge as an asphalt pavement is mounted on a wooden bridge in Sunderland. In the early 20th century, along with engineering material prices to continue to decline, asphalt show more sense. In 1907, the first asphalt members in the United States put into use. In 1914, in order to get a better index of refraction, people in Berlin for the first time to see the racing lane asphalt pavement, heating output: Bitumen is stored in large tanks in Shandong asphalt, when using the output, the need for storage tank After the asphalt is heated to improve the fluidity of the asphalt before smoothly and fast output. Heat source output is generally required HTF. According Petrochemical Technology Promotion Center Introduction, conventional heating the following disadvantages: 1, the heating process is not economical. When only need to pour a small amount of asphalt, but also on the whole entire heating asphalt tank, asphalt heating amount is several times the amount of such use, so a lot of HTF do useful work. 2, each part of the asphalt tank temperature is not balanced. Asphalt near a heater temperature is higher, away from the heater temperature is lower asphalt bitumen factory, seriously affected the liquidity out of the oil. 3, Pitch quality. Repeatedly asphalt tank heating, a large amount of fine decomposition heating process, have a certain impact on the pitch color quality and increase the cost of post-processing. Asphalt | Three-ping Chemical | asphalt provided by Jinan, Shandong Chemical Co., Ltd. three levels. Asphalt | Three-ping Chemical | Shandong Jinan three flat asphalt Chemical Co., Ltd. (www.sanpinghuagong.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel picture on this page or to obtain the latest information, contact Person: Su Jingli.