Type of pipe fittings: What are the meanings of DN250B-Sch30 90E(L), DN250B-Sch30 T(S) and DN250*200B-Sch30 R(C)?
Nominal diameter is 250mm, series B, and sch30 refers to seamless elbow with pipe wall thickness standard (nominal pressure 30kg) and 90 degrees (1.5 times nominal diameter d); DN250*200B-sch30R(C) is the reducer joints 250 and 200 (nominal diameter), and R(C) is the material code.