Both high-pressure and low-pressure large diameters use welded neck flanges

Neck flanges are divided into threaded neck flanges and welded neck flanges

The small diameter of the low pressure has a threaded neck flange, and the high pressure and low pressure large diameters use welded neck flanges. The thickness of the neck flange with different pressures and the diameter of the connecting bolt (composition: head and screw) And the quantity is different. According to the different grades of pressure, flange gaskets with necks also have different materials, ranging from low-pressure asbestos gaskets, high-pressure asbestos gaskets to metal gaskets. Neck flange connection or flange joint refers back to the detachable connection of flange, Gasket and bolt as a group of combined sealing structure. Pipe flange refers back to the flange used for piping in the pipeline installation, And used on the equipment refers to the inlet and outlet flange of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges.

Both high pressure and low pressure large diameters use welded neck flanges

Neck flanges are relatively difficult to process among all flanges. Common forged welded flanges are not only costly, but also prone to cracks on the flange neck and welded joints. Flange is also called flange flange. The part that connects the pipe to the pipe, connected to the pipe end. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flange is a disc-shaped part, which is more common in pipeline engineering, and flanges are used in pairs. In pipeline manufacturing, Flanges are mainly used for the link of pipelines. At the ends that need to connect the two pipelines, install a flange. deficient-pressure pipelines can use wire flanges and welding flanges with pressures greater than 4 kg.

Both high pressure and low pressure large diameters use welded neck flanges

Add sealing points within the two flanges, immediately after tighten with bolts. The butt welding flange produced by the butt welding flange adopts certain technical parameters and requirements for production and use during production and production, so as to ensure that it can be used and promoted according to certain methods and principles, and adopts certain process methods and principles for production and use. Welding, strictly guarantee the good quality in use. Welding flanges In pipeline engineering, flanges are mainly used for the connection of pipelines. In the pipelines that need to be connected, various flanges are installed, and low-pressure pipelines can use wire flanges. The sealing point is then fastened with bolts (composition: head and screw). Flanges with different pressures have different thicknesses and use different bolts. Water pumps and valves (functions: cut-off, diversion, pressure stabilization, diversion, etc.) .

Both high pressure and low pressure large diameters use welded neck flanges

When connecting with pipelines, the parts of these equipment and equipment are also made into corresponding flange shapes, also known as flange connections. Bolts (composition: head and screw) are used to connect and close the two planes at the periphery. The connecting parts are generally called “flanges”, such as the connection of ventilation pipes, this type of parts can be called “flange parts”. But this kind of connection is only a part of the equipment, such as the connection between the flange and the water pump , it is not easy to call the water pump “flange parts”. Smaller ones such as valves (function: cut-off, diversion, voltage stabilization, shunting, etc.), can be called ‘flange parts’. The flat welding flange has a beautiful appearance and a smooth surface. It is mainly used for the connection of carbon steel pipes, and its nominal pressure does not exceed. The forging process of splitting the blank or cutting off the head.