PVC Pipe standard 100 mm diameter

Common/standard 100 mm / 104 mm diameters PVC tube.
Total lenght : 605 mm
Purpose : conception of hydroponic systems...
I cannot find it online so I try to make it.
Please feel free to tell me if there is anything wrong.
I'm particulary worried about the junction between the 100 mm and the 104 mm.

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