DN100-DN100 SCH40*DN25 GB/T19326 SW
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DN100-DN100 SCH40*DN25 GB/T19326 SW branch fitting – why are there two sizes for DN100-DN100?
Because one end of the branch pipe fitting is welded to the larger pipe, a corresponding arc-shaped groove for intersection must be created there, while the other end needs to match the smaller pipe that is joined via butt welding. You can just take a look at the standards or the actual product yourself.
In the ERP system, the formats used by others are DN100/DN25 SCH40/SCH40 A105. How should I enter my dimensions?
I’m not sure what options are available in your ERP system. For SW butt welding, there is no issue with wall thickness at the smaller end; rather, the pressure rating is a concern, such as 3000# and 6000#.
Look at the description example in GB/T19326