Shunxiang ductile pipe | [flexible interface cast iron pipe specifications | Lianyungang flexible cast iron pipe prices offered by Shunxiang ductile pipe. We are Liaocheng Shunxiang Building Materials Co., Ltd. (www.lcsxjc.com) located at: Shandong Liaocheng professional: ductile iron pipe, seamless steel tubes, precision steel Liaocheng Shunxiang Building Materials Co., Ltd. mainly produces all kinds of cast iron pipe flexible cast iron milling Manufacturers of pipe, ductile iron pipe, cast iron pipe fittings flexible flexible interface cast iron pipe specifications, quality cast iron pit wells quality of our products. Hydrogen is not corrosive media? Hydrogen is not corrosive media flexible cast iron pipe prices, but it has soaked in order, because the hydrogen molecule is small, it will enter the lattice inside the cast iron pipe, flexible metal prices, the metal bubbling. This representation on thicker metal, perhaps not in doubt, but a thickness of about 0.1mm long as the transmitter diaphragm gap barrier sheet, the penetration of hydrogen is very important. Because hydrogen molecules even through some pot metal diaphragm, into the internal filling solution, so that the filling solution containing gases affect the appearance of ductile iron pipe fittings feature. Hydrogen treatment is soaked in the outer coating of the metal diaphragm. 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. High temperature flexible pipe welding type expansion joints, because of heat conduction requires a certain time, so the points are at a different time to the highest temperature point. Welding process but, in general, is formed in a metallurgical weld process. Area near the weld metal heat treatment equivalent received a different specification, would have a corresponding change in the microstructure and properties. Welding, the weld crystallization starts from the bottom of the bottom wall toward the center of the pool to grow. When the cooling rate due to crystallization is different in each direction, thereby forming a columnar-cast microstructure (ferrite and pearlite composed).