HG/T 20592  法兰 PL 500-6 RF2/35G/2-12=F0 RF¦/m

PL500(a)-6 RF2/35G/2-12=F0 RF¦/m

PL250-16RF D= K= AA=

PL150-25FF b=0 n=4 L=M

PL25(A)-10RF C1=12 S=7.16r

bl80(B)-25 m920 R

WN250(B)-25RF|H40Вҙ0=

WN 300(B)-16 M/hSC0δ=26R=)-10rf5 rf s00wn350-6

WN 25(A)-16 RF D=115.2 A=34 S=3 C=18.2

WN40-100RF0FR