Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of milling of cast iron pipe, high quality ductile iron pipe, flexible cast iron pipe fittings, cast iron pit wells quality of our products. Ordinary flake graphite cast iron in the presence of very low intensity of graphite, so there are many flaky desert commensurate to idle GB centrifugal ductile iron pipe supply in cast iron, ductile iron pipe fittings so the relatively low intensity of the emerging ordinary cast iron ductile iron pipe, more brittle. Graphite cast iron is spherical graphite centrifugal ductile iron pipe specifications, there are many spherical commensurate idle in ductile iron in open areas. Open areas free of the effects of spherical cast iron sheet strength than open areas free of small, so a lot of ductile iron pipe fittings strength than ordinary cast iron strength. Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of milling of cast iron pipes, ductile iron pipes ductile iron pipe, cast iron pipe fittings flexible, high-quality cast iron pit wells quality of our products. Due to the different circumstances of each point in the vicinity of the heat pipe flexible expansion joints weld heat-affected zone can be divided into the fusion zone and overheated zone, normalizing area and part of phase transition zones. Flexible expansion joints of pipe weld fusion zone and base metals is handover transition zone between the solidus and liquidus temperatures in this area, as part of the welding process, the temperature of the base material to melt, it is also known as semi-melted zone . At this point, to melt the metal solidified into cast structure for molten metal heating temperature is too high because of overheating coarse grain formation in low-carbon steel double flanged Transmission Joint welding, pipe welding area although small flexible expansion joints (0.1-1mm) but because of its strength and toughness are decreased, and the connector end face of the changes here, can lead to stress concentration, so the fusion zone determines the properties of welded joints in a great extent. Hechi centrifugal ductile iron pipe | Shunxiang ductile pipe | GB centrifugal ductile iron pipe supply provided by Shunxiang ductile pipe. Liaocheng Shunxiang Building Materials Co., Ltd. (www.lcsxjc.com) in ductile iron pipe, seamless steel tubes, precision steel and other industries have high visibility, integrity management, both quality of service, welcome to inquire or consult our "commercial Union Service "it!