(1) The application of flange-because the flange has good performance characteristics, it is widely used in chemical industry, construction, petroleum, sanitation, pipeline, fire protection and other basic projects.

(2) In the pipeline strength test or sealing test, the application of the blind plate-the original start-up preparation stage cannot be carried out at the same time as the connection equipment (such as turbine, compressor, gasifier, reactor, etc.). The formal name of blind flange blind flange is called flange cover, and some are called blind flange or pipe blockage. It is necessary to provide blind plates at the connection between the equipment and the pipeline. Various process material pipes are connected to the boundary area outside the boundary area. When the equipment stops running, if the pipe is still running, a blind plate should be provided at the shut-off valve.

Different pressure flanges have different thicknesses and use different bolts. Our company can also process and manufacture according to the special requirements provided by users to ensure product quality, service quality, and make customers more satisfied. Welcome to buy. In the pipeline engineering, the flange is mainly used for the connection of the pipeline.

For pipelines that need to be connected, each device is a flange. For low-pressure pipelines, wire flanges can be used, and welded flanges can be used for pressures above 4kg. The signal range of the flange includes: the implementation standards of the DN15-DN6000 flange cover are: chemical standard HG, national standard GB/T9119, petrochemical standard SH/T3046, mechanical standard JB/T81-94, etc. The flange materials are carbon steel, stainless steel, alloy steel and duplex steel respectively. A sealing point is added between the two flanges. The stainless steel flange with neck is a kind of flange, which is also called flange or flange. Is the pipe and pipe connected to each other parts. Connect to the pipe end. There are holes on the flange, which can be threaded with bolts to make the two flanges tightly connected.

Welded steel flanges: used for butt welding of flanges and pipes. Its reasonable structure, strength and rigidity, can withstand high temperature and pressure, repeated bending and temperature fluctuations. The sealing performance is reliable, and the welding flange with nominal pressure of 0.25-2.5 MPa adopts concave and convex sealing surface. Socketed welding flanges are usually used for pipes with PN≤ 10.0MPa and DN≤ 40.