Principles for establishing pipe fitting connection methods
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Can you tell me the principles for establishing material grade table pipe fitting connections? like: Under what conditions do you want to use standard tees, and under what conditions do you want to use welded tees? What are the differences in connection methods for different pressure levels? To start the discussion, let me first talk about my understanding. Everyone keep up: When the diameter of the branch pipe is less than half of the main pipe, dig holes directly without using tees. If the branch pipe is smaller than 50mm, no reinforcement is required, otherwise reinforcement is required. When the diameter of the branch pipe is greater than or equal to half of the main pipe, tees are directly used. For pipes with a main pipe smaller than 40mm, socket welding tees are used, and for the rest, welded tees are used. At the same time, a material grade table from a certain compound is attached for your reference.~
The principle applies to general situations. If it is a lethal substance or dangerous content (such as strong acid), the 100% RT requirement must be connected with a tee or reducing tee, and intubation cannot be used. Basically, each piping spec has its own branching table, which is decided upon discussion between the process and piping personnel. It is not a rigid rule.
Supplementary correction to the above article, it’s not that intubation is not possible, but that intubation must be done with a wedolet.