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Positive development of chemical building materials

Rainwater). The state promotes the construction of the village in accordance with the requirements of Chemistry, Shanghai Institute of Architectural Design and Research Institute, East China Architectural Design Institute, Municipal Council premises, Fu Bao Building Plastic Factory Shanghai joint development of the buried PVC pipes, City Construction Bureau of the preparation of \PVC drainage pipe buried outside engineering point of order \These products affordable and easy construction, easy to spread. Wei Plastic Co., Ltd. Shanghai chlorine production technology introduced from Australia PVC reinforced pipe, by the City Council of the pilot and the determination that the product can be used for municipal use of buried pipelines for use in residential areas may consider enhancing the measures under the roads. Applied Technology Council is set standards and common plans. These products will be available mainly as residential areas and municipal road to promote the use of buried pipes. The traditional cast iron water distribution pipes, steel pipes, galvanized iron pipes, Rural Drinking Water Supply in the eighties started to promote the polyethylene pipe, the stress of white cement pipe and prestressed concrete pipe in the Ministry of Construction eighties in Heilongjiang, Shanghai, Fujian three pilot PVC water supply. Application of product standards and technical standards have been developed. In 1996 it organized the ten pilot cities. Shanghai completed the 17.9km in 1996 the pilot project. Shanghai Water Supply Company identified the pilot and the subject show that the hard PVC 1.0MPa rubbish to water, underground water supply project in the application of the situation to normal. Facilitate the construction, acceptance test pressure to meet the requirements. Recent press coverage has been \polyethylene pipe (HDPE), these products are classified as health-based building materials abroad. Compared with UPVC paste it difficult to link the pipeline generally use a dedicated high-power melting or steel pipe,[link widoczny dla zalogowanych], stainless steel special fittings, high prices, currently affecting the country to promote use. Shanghai has a foreign factory, the introduction of foreign patents, using the same material (HDPE) mechanical seal type connection tube (≤ 63mm), to overcome the problem of high prices of tube. If the product quality by testing and pilot to achieve the water use requirements, will also be plastic to the water to promote a good variety. Traditional building is a black iron pipe with electrical pipe. Shanghai eighties was the production of PVC pipe crossing the wire pattern, but the quality index is low, currently out of the market. Building insulation casing (PVC) with a flame retardant, insulated, flexible, low cost advantages such as 6, is currently widely used products. Shanghai in 1995, building standards were prepared, l! t96 years in Shanghai, the project has been used. As the years the continuous improvement of living standards, according to the information, Shanghai has 90 new home renovation to install water heaters, the traditional white iron pipe rust easily plug in and out of the water pipes. It is reported that the European market a small amount of hot water pipes with copper pipes than most plastic pipe,[link widoczny dla zalogowanych], such as cross-linked polyethylene pipe (XLPE), Ⅱ, Ⅲ polypropylene tubes (Ⅱ, Ⅲ a PP), polybutylene pipe (PB ), chlorinated polyvinyl chloride pipe (CPVC) and so on. Cross-linked polyethylene pipe used in Europe and America more. In recent years, the degree of crosslinking of 70, good heat resistance but requires a dedicated connection pipe fittings, higher prices, waste management can no longer use. Shanghai, a joint venture has been the introduction of technology production. . There is no corresponding state, and local application of product standards and technical standards. In recent years, American,[link widoczny dla zalogowanych], Japanese introduced polybutylene pipe. But with the XI. , PE has similar advantages and disadvantages of polypropylene Ⅲ nearly two years to improve the German development of new materials, unless the same advantages of plastic pipe, with the same material tube, pipe, hot melt material to the merits and the old re-use of the advantages of non-toxic products. Abroad as a health-based building materials, will become the next promotion; compete in the direction of hot water pipes. Several companies have jointly developed Shanghai Ⅱ polypropylene tube, get the city Science and Technology Commission, the Municipal Economic Commission, the Urban Construction Committee for their support. Polyethylene gas pipe has been application of national product standards and industry technical standards, the Ministry of Construction to promote products. Currently high-density polyethylene gas pipe. Pudong area of Shanghai in 1995, low-pressure gas pipe buried in the pilot 3000, 1996, expanding the use of the Pudong district in Shanghai, Wuxi has a production. These products will replace the traditional gas underground pipe network in the metal tube. Underground communication pipe with plastic pipe standards allow the Ministry of Posts and Telecommunications both HDPE and UPVC materials, allowing the solid wall pipe, dark green layer of foam pipe, single wall or double wall corrugated pipe,[link widoczny dla zalogowanych], perforated pipe to replace the traditional PVC cement buried high-pressure cable casing production of individual countries, only Shanghai Tomson Plastic Industry Co., Ltd. to develop such products,[link widoczny dla zalogowanych], quality standards for similar products to Japan. (Continued)
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