Regarding the reducing tee, note at the end of the material table: WTR1008GABBSZZS4S4
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What does WTR1008GABBSZZS4S4 mean? Seek guidance from experts
The material code listed in the pipeline materials table of the design institute is an internal code used by that institute; it is not universal. One should look at the technical requirements accompanying it, including the material type, specifications, grade, etc
There are technical requirements; these are listed in separate notes
The computer codes used by design institutes vary from one institute to another, and they are of no use to other organizations
It can only be seen that WTR refers to something; the others are likely codes from design institutes. W generally denotes large-sized, slotted fittings, while TR stands for reducing tee. Fittings with equal diameters are denoted as TS