HG/T 20592  法兰 WN 300(B)-100 RF0 RF5-

WN 300(B)-100 RF0 RF5-

SO 100(B)-16 M00T650 RF Sch40Sm=30Sc

PL100(B)-16RF0 RF1.6B-16ffF000-4.0ch4rf1

WN65-300 M0f1w6 30F8 Af

WN50-150 RF S0 FF40c

DN 1500×15-Sch120 RC

WN 500-300RF SCH=30 S=30 C=30

WN80-150 RF Sch1006so2

bl125-40 rf=33d=210 RF/u00ac