After nearly 10 years of development, the domestic sphere cast-iron pipe quality cast-iron pipe is close to the level of developed countries the ball. The so-called "near" and not "achieve", that there is a gap. Gap mainly in the cast-iron pipe quality ball and internal and external coating finish inside and outside. I have carefully observed several have a certain production scale and higher visibility of the domestic sphere cast-iron pipe manufacturers of products found to have a superficial appearance of slag, porosity and distribution of gas pits and other defects DN500 ductile pipe, cast pipe wall with cracks, and even slag layer thicker. I believe that such defects ball cast-iron pipes, because the result of a lack of hot metal purity. "Hot metal purification" theory: the purity of molten iron is internal to the product quality that is the decisive factor. Therefore, to improve the purity iron ball is the key to producing high quality cast-iron pipe, and a prerequisite for the production of high-quality ball cast-iron pipe products to international markets. Applications: Widely used in water, oil pipelines. As well as food, pharmaceutical and chemical industry production process pipe network. On the municipal pipe network, water companies, urban construction, real estate development, domestic structural steel, machinery manufacturing, mining, petroleum, chemical, power and other sectors of the market, with considerable resources and services, and form the leading resource ductile iron pipe, leading services trend. And gradually formed a Shandong as the center, radiation national sales network. Meade's main business is the ductile iron pipe, ductile iron pipe and related fittings, rubber seal ring, iron and steel smelting and rolling processing, casting products. Our company ductile pipe are in line ISO2531-98E standard DN200 ductile pipe, using the blast furnace production of low phosphorus, low sulfur high-quality cast iron, ductile iron pipe according to the current international advanced centrifugal casting, the annealing process Shandong ductile iron pipe, water-cooled metal mold centrifugal casting machine casting made of annealed, socket repair, water pressure test, wall lining cement, cement lining health, cement mill lining, outer coating of asphalt paint, asphalt paint baking, socket rust treatment, jet marks and packaging, and other procedures of careful treatment, with high strength , high elongation, corrosion-resistant reinforced steel frame. Ductile iron pipe manufacturers, ductile iron pipe, by virtue Pipe Co., Ltd. Liaocheng virtue of Industry. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead virtue of Industry and you work into the brilliant, for a better future!