Flange for welding 125 pipes
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Gas pipeline 125: Now, the flange of 100 needs to be welded. What are the issues according to the specifications?
Is it necessary to use a reducer when welding a 100A flange to a pipe of 125A?
It’s best to send over the unit or the standard specifications first. Facilitates discussion. For example, DN100, or φ108×*mm, etc.
The pipe is DN125A, while the flame arrester has a diameter of DN100A; isn’t it a problem against the specifications not to use a reducer?
It seems that a change in diameter is required; it would be best to verify whether there is an issue with the valves purchased, for reference only.
There needs to be a change in diameter; otherwise it won’t fit and can’t be installed.
Large pipe with small flange; it’s not possible to use special flanges for such pipes, so increase the size of the reducer instead
With direct welding, does the flange position have something akin to a retaining ring?