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The main purpose of the ductile iron pipes

by:XEX     2020-12-03
Ductile iron pipes are the main purpose of nodular cast iron pipe compared with grey cast iron pipe, strength, good toughness, thin wall and less dosage of metal, can bear high pressure, the effective length is 5 meters and 6 meters; According to the wall thickness of different points P and G levels. Is the development direction of cast iron pipe. The connection between the tube and tube, using socket type or flange disk interface form; According to the function and flexible interface and can be divided into two kinds of rigid interface. Flexible interface with a rubber ring seal, allowing Angle and displacement have certain limits, thus has good shock resistance and impermeability, than the rigid interface is simple and rapid installation, according to the different casting methods, labor intensity is small. Ductile iron pipe fittings for water supply, water drainage and gas transmission pipeline, it includes cast iron straight pipe and pipe fittings. The labor intensity is small. According to the different casting methods, divided into continuous cast iron pipe and centrifugal cast iron pipe, the centrifugal cast iron pipe is divided into sand mold and metal mold. According to the material divided into grey cast iron and nodular cast iron pipe. Flexible interface with rubber ring seal, continuous grey cast iron pipe nominal diameter is 75 ~ 1200 millimeter, use socket type or flange disk interface form; According to the function and flexible interface and can be divided into two kinds of rigid interface. Straight pipe length is 4 meters, 5 meters and 6 meters; According to the wall thickness of different LA, A and B level 3. Sand mold from who cast iron pipe nominal diameter is 200 ~ 1000 millimeter, effective length is 5 meters and 6 meters; According to the wall thickness of different points P and G levels. Strength, good toughness, thin wall and less dosage of metal, can bear high pressure.
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