Regarding the types of pipe flanges and their application ranges, it is stated that for integral flanges, the outer diameter series applicable to steel pipes is the same for categories A and B. What does this mean?
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Regarding the type of pipe flange and its scope of application, what does the statement \"The outer diameter series of steel pipes suitable for integral flanges is consistent with Series A and B\" mean? The others are written as A and B.
Pipes in the same series should be equipped with flanges of the same type; otherwise, differences in inner and outer diameters will make welding impossible
The overall flange doesn’t have any pipes connected to it, and there is only one type of inner hole