HG/T 20592  法兰 WN 300(B)-25 FM C=42 H=102F A=768 S=364B

WN300(B)-25 FM C=42 H=102F A=768 S=364B

wn250-900 rfB=87=/126-2610

PJ/SE 50(B)-16 RF S=8

BL500-150RF=48=3 D=495 B=F

A WN 56"-150 RF B=10

so80-150rf

WN 50(B)-16 RF Sch100pamp Sch80=2280=3F S=6F0--1

WN40-900 T100150 r5 H00-h8

BL300-10RF HG/T 20592