Can pipe flanges be buried directly in the ground?
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Can pipe flanges be buried directly in the ground? Are there any regulatory guidelines?
Take a look at the medium inside the pipeline; in fact, no matter what material is being transported, it is not allowed to be buried directly in the ground
No, since the flange serves as a seal, it is subjected to much greater corrosion when buried underground compared to when it is in the air, which makes leaks very likely to occur
Is there any basis for this? Are there any regulatory requirements?
Is there any basis for this? Are there any regulatory requirements?
According to GB50242-2002, section 9.2.3, pipe connection flanges, clamps, buckles, etc. should be installed in inspection wells or trenches, and should not be buried in the soil. In building plumbing systems, flanges are required not to be buried underground, let alone in industrial applications. If you look at Chapter 9 on pipeline anti-corrosion and insulation in the SH3034-2012 \"Code for Design of Water Supply and Drainage Pipelines in Petrochemical Industries\", it only provides guidelines for anti-corrosion measures applicable to pipelines; there are no provisions regarding flanges or similar components. It is assumed that such components should be located in valve chambers, rather than being buried directly in the ground
GB 50184-2011 \"Code for Acceptance of Construction Quality of Industrial Metal Piping Projects\" 7.1.5 Pipe flanges, welds, and other connectors shall be arranged in a manner that facilitates maintenance, and shall not be positioned against walls, floors, or pipe racks.