Is it possible to drill a hole in the main pipe to insert a branch pipe, or are there any requirements?
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According to GB50316, the connection of main and branch pipes can be achieved by making holes in the main pipe and then performing socket welding. Is there any specification that specifies the outer diameter of the branch pipe should be 1/2 of the outer diameter of the main pipe?； Thank you~ Also, I would like to ask: What does the additional amount for reducing the thickness (negative deviation) mean? Thank you!
If the opening is too large, a tee calculation must be performed before it can be used. The negative thickness deviation refers to the value by which the manufacturer controls the deviation in tube thickness; various material standards specify different values for this negative deviation