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Standard System for Blind Flange Application

2019-04-15 11:49:26   COMMENT:0 HITS:
  The petrochemical industry application standard system belongs to a relatively complete application standard system. Because it is equivalent to ANSI Blind flange standard, Blind flange represents the advanced and development direction. Because its flange blind plate (SH3406) can match API standard valves. The application in recent years has proved that this Blind flange application standard system is a scientific, advanced and operable standard system. Blind flange is a kind of disc parts, which is most common in pipeline engineering. Blind flange are used in pairs. At present, there are many and incomplete application standards for pressure pipes and their components in China. Taking Blind flange standard as an example, the commonly used standards are national standard (GB), mechanical industry standard (JB), petrochemical industry standard (SH) and chemical industry standard (HG). These standards have their own temperature-pressure gauge, sealing surface size and tube size, which are not interchangeable with each other, and some of them can not even be used together. In pipeline engineering, SS316 PN40 DN50 Stainless Steel Blind Flange is mainly used for pipeline connection. In pipelines that need to be connected, all kinds of Blind flange are installed. Blind flange can be used in low-pressure pipelines, and welding Blind flange can be used under pressure of more than 4 kg.

  A sealing point is added between the two Blind flange and then fastened with bolts. Blind flange under different pressures have different thickness and bolts. When the pump and valve are connected with the pipeline, the parts of these equipment are also made into corresponding Blind flange shape, also known as Blind flange connection. Connecting Blind flange parts that are bolted and closed at the same time on the two planes.

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