The construction drawings specify requirements for gaskets and bolts; could someone please explain this?
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Gasket: 42\"·3.2MM NOMINAL THICKNESS GASKET ASME B16.20 CL300RF INNER RING SS TP304 CS OUTER RING FLEXIBLE GRAPHITE FILLER SS TP304 WINDING TO MEET ASME B16.47-B Standards. Bolts: 3/4\" DIAMETER·355.0MM LONG STUD BOLTS/HEXAGONAL NUTS (FULL THREADED); BOLTS IN ACCORDANCE WITH ASTM A320-L7, NUTS IN ACCORDANCE WITH ASTM A194-4 ASME B18.2.1; BOLT LENGTH: 355.0MM
300LB 42\" Series RF flanges (flange standard ASME B16.47-B), fitted with metal wound gaskets; gasket standard ASME B16.20. Inner ring material: TP304; outer ring: carbon steel (CS). Winding strip: TP304 + flexible graphite filler. Double-ended fully threaded bolts, size M18*355 (it should be M19.05 – 0.75*25.4=19.05 – but bolts of size M19 are not available; either M18 or M20 is used). The relevant standards specify the bolts, nuts, and material requirements; strangely, the length is indicated as 350
Gasket: 42\"·3.2MM NOM THK GASKET ASME B16.20 CL300RF INNER RING SS TP304 CS OUTER RING FLEXIBLE GRAPHITE FILLER SS TP304 WINDING TO SUIT ASME B16.47-B 42-inch, 300-pound class, Series B, 3.2mm thickness, convex flange, standard ASME B16.20; inner ring: SS TP304, outer ring: carbon steel, filler: flexible graphite, steel strip: SS TP304
I can’t understand such a long list either; I’ll just refer to the answers given by other users. Their answers are very professional and detailed
It should be the standard ASME B16.47-B
What does that NOM mean?