Delamination and other shortcomings, the protective layer has a variety of methods (the following dilution loose ethylene and FRP protective layer) can be blocked? The joint shall be guaranteed to be conformable, tight and waterproof. First of all, the directly buried insulation pipe should be tested to take a look at the surface quality of the tube. if it is found that obvious depressions or some obvious damage should be improved in time, the manufacturer of prefabricated directly buried insulation pipe said: it is necessary to pay attention to some details in the acceptance work. The detection of directly buried insulation pipe involves many aspects, and it is recommended that before acceptance of directly buried insulation pipe. The connection and sealing of the outer casing of the joint with the supervisor and the foaming work of the on-site joint, but does not include the welding of the steel pipe of the joint. The main results are as follows: (1) the sleeve joint is made of the same material and density as the prefabricated thermal insulation pipe casing. The installation of the outer sleeve of the polyethylene joint and the main pipe shall be carried out by heat shrinkage belt.
It is characterized by multi-use of one material, heat preservation, waterproofing and other functions at the same time. This kind of products have been used in European construction industry for 40 years since 1960s, and some of them have adopted legislation to use polyurethane as thermal insulation and waterproof materials in construction industry. In recent years, with the rapid development of building energy saving market in China, polyurethane rigid foam thermal insulation products have been widely used in the field of building thermal insulation and waterproofing, and have become one of the leading thermal insulation and energy saving products in the market. It includes the installation of the joint outer casing, the connection and sealing of the joint outer casing with the supervisor and the foaming work of the on-site joint, but does not include the welding of the steel pipe of the joint part. (1) method? Sleeve joint, in this way.
Sand cushion)-lower pipe-steel pipe welding-inspection (water pressure)-installation (pressure test)-foaming-sealing foam cell. The installation of elbows and joints Dezhong Youcheng Company can send personnel to the project site to carry out the heat preservation work of the joint, including the installation of the outer casing of the joint, the connection and sealing of the outer casing of the joint with the supervisor, and the foaming work of the on-site joint, but it does not include the welding of the steel pipe of the joint. Fused epoxy powder underlayer, polymer adhesive interlayer and polyethylene surface layer, between which the action of epoxy powder underlayer is defined)
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The heat preservation work of the joint is carried out at the steel pipe engineering site, including the installation of the outer casing of the joint, the connection and sealing of the outer casing of the joint with the supervisor and the foaming of the joint on site, but does not include the welding of the joint part of the steel pipe. High temperature prefabricated directly buried thermal insulation pipe not only has advanced technology and practical performance incomparable with traditional trench and overhead laying pipeline, but also has remarkable social and economic benefits, and it is also an effective measure for heating and energy saving. The high temperature prefabricated directly buried heat preservation pipe adopts the technology of directly buried heating pipe.
Wu Ming, president of Guangzhou Huanya Cosmetics Technology Co., Ltd., was invited to attend the event with Yu Hongbin, executive president of Guangdong quality Development Promotion Association and provincial government quality award evaluation expert, party committee secretary, professor and doctoral supervisor of the School of Management of Jinan University, and Wei Haiying, director of Guangzhou Brand Innovation and Development Research Base. Lu Rong, Secretary General of Guangzhou State-owned Enterprise Innovation Strategic Alliance and President of Yuexiu Industrial Fund, and other guests accepted an exclusive interview with media reporters on the spot to discuss and exchange the construction path of “Guangzhou brand” in multiple dimensions, and work together to make suggestions for the high-quality development of the brand.
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