HG/T 20592  法兰盖 BL 250-16 RF C=186c40S=5S=5SCH4 A=1sc41.0F Sch

bl250-16rf C=186c40S=5S=5SCH4 A=1sc41.0F Sch

PL125(B)-10RFB)-2p rF=1000fh-16RF/2 REl=-210 RF B=369

pl20b-10 rf hg/F91 aa=60.5 k=120 n=8 l=19 c

WN50(B)-16 FM S=4mpquothg2=1r6RF059202=RF1=3B)-1

SO 500-150 FF3.5M Sc

SO32B-25TF056 H=s1150

SO100-900RJ