过去，国内油田采用的沥青膨胀珍珠岩防腐保温管道的成型和施工方法是：先在预制厂把沥青膨胀珍珠岩按管道口径用模具压制成上、下两半的保温壳，再把保温壳拉运到现场．人工两半时接后缠绕玻璃布和塑料布。这种方法既费时，又费力，而且施工质量差。为此，大庆油建公司施工技 In the past, the method of forming and construction of asphalt perlite anticorrosive insulation pipe used in domestic oilfields was as follows: the asphalt expanded perlite was first pressed into the upper and lower half of the thermal insulation shell according to the pipe diameter by the prefabrication plant, and then the thermal insulation shell was pulled Shipped to the scene. Artificial twins and then wound glass cloth and plastic sheeting. This method is time consuming and laborious, and the construction quality is poor. To this end, Daqing Oil Construction Company Construction Technology