What diameter steel pipe is standardly suitable for drilling a hole in, installing a socket clamp, and then attaching a pressure gauge?
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What diameter steel pipe is standardly suitable for drilling a hole in, installing a socket clamp, and then attaching a pressure gauge? Are there any regulations in this regard?
According to **the standards**, the wall thickness and diameter of steel pipes must meet certain requirements in order to allow for the creation of holes in the pipes, the installation of socket collars, and the subsequent fitting of pressure gauges. Under normal circumstances, the diameter of the steel pipe should be greater than or equal to DN50 (50 millimeters), and the wall thickness should be greater than or equal to 4 millimeters. Specific requirements need to be determined by referring to relevant industry standards and design specifications in order to ensure the safety and stability of the pipelines. .
Low-pressure pipelines with an opening diameter smaller than 1/2 of the pipe diameter, using socket-welded pipe collars
HGT 21581-2010 Manual for Automatic Control Installation (Volume 1), P242: Requirements for Pressure Gauge Installation – 4.3 Type of Root Valve. To facilitate the connection of pipe fittings between the pipeline engineering team and the instrumentation team, it is required that the root valves provided by the pipeline engineering team (with the exception of pressure gauge stop valves and those specified otherwise) be of the DN15 socket-welded gate valve type; however, the root valves shown in the diagrams may be either DN15 or DN50 flanged stop valves. DN15 is equivalent to 1/2", and it is four times larger than 2" (DN50) in main pipelines (as stipulated in Article 6.4.5.1 of the GB 50316-2000 Code for Design of Industrial Metal Piping (2008 edition)). In cases where socket welding can be used according to the pipeline grade table, one can follow what the original poster suggested.