The choice of cement covers mold material needs more attention. We must consider many security covers Inner Mongolia mold much money, cost, product quality, the mold is to meet customer needs, mold types, work methods, processing speed, the main failure modes need to be considered coming. For now the precision cement covers mold cavity surface roughness, the production cycle, and other indicators of life expectancy compared with foreign advanced level still lags far behind. Then we should learn from foreign advanced technology and the introduction of advanced equipment in Inner security covers mold much money, to promote the Chinese domestic mold industry. The most common specification covers Yes D600 and D700. Of course D700 divided GB and non-GB size. It covers on the shape of round, square, shaped ...... material is cast iron, plastic, cement, composite ...... specification, then it too much, mainly based on the size of the pipe to determine. This absolutely can not as detailed the inspection covers - "Complete" plastic - diameter * thickness specifications:. CM 30 * 5/40 * 6/50 * 6/60 * 6/70 * 5/70 * 6/70 * 7/70 * 12/80 * 7. The specification covers the general municipal use, usually diameter 700 heavy, bearing the weight of 40 tons or more. I plant covers mold is carrying more than 40 tons of specially designed and manufactured. Security is provided by Baoding covers mold Kaiyuan country-die factory. Baoding Century country-die factory (www.kaiyuanguotong.com) strong, credible, in Baoding plastic building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the country through the mold Kaiyuan into the brilliant and you work for a better future!