Ductile iron flange

Ductile iron flange is mainly called centrifugal ductile iron casting. It has the nature of iron and steel properties, excellent stability performance, strong extension, good sealing effect, simple installation, mainly used in municipal and industrial and mining enterprises for water supply, gas transmission and oil transportation. It is a good faith business of water supply pipe, with high cost performance. Compared with PE pipe, the installation time of the ductile pipe is more convenient than PE pipe, and the internal and external pressure is good after installation; From the point of view of airtightness and performance stability, the sealing property of the spheroidal ink pipe after installation is excellent, and the performance stability can also be improved by various performance stability means; From the hydraulic performance, the specification of the ductile pipe generally refers to the inner diameter and the PE pipe specification generally refers to the outer diameter, because under the same specification, the ductile pipe can achieve large runoff; From the comprehensive installation and maintenance cost, the ductile pipe has a good price performance. Zinc spray on the inner wall, stable material of cement mortar performance, etc.
Flange, also known as flange or flange. Flange is a part of the shaft and shaft which are connected with each other, and is used for connection between pipe ends; It is also used for the connection between two equipment, such as the flange of reducer. Flange connection or flange joint refers to the detachable connection of a group of combined sealing structures by the connection of flange, gasket and bolt. Pipe flange refers to the flange used for piping in the pipeline device, and used on the equipment refers to the inlet and outlet flange of the equipment. The flange has holes, and the bolts make the two flanges tightly connected. The flange is sealed with gasket. Flange tapping (screw connection) flange, welding flange and clamp flange. Flange is used in pairs, low pressure pipe can use screw flange, more than four kilograms of pressure use welding flange. Add gasket between two flange plates and fasten with bolts. Flange thickness is different for different pressures, and bolts are used differently. When connecting with the pipe, the parts of these equipment and equipment are also made into corresponding flange shape, also known as flange connection. All connecting parts which are connected by bolts around two planes and closed at the same time are generally called "flange", such as the connection of ventilation pipes, such parts can be called "flange parts". But this kind of connection is only a part of the equipment, such as the connection between flange and water pump, so it is not good to call the pump "flange parts". Smaller, such as valves, can be called "flange parts.".