HG/T 20592  法兰 WN 80-100 RF S=7H=1

WN80(A)-100 RF S=7H=1

3 G 600-6.420δ0=8335500-

WN 500-150 RF Sch40f s=5.00Ss=

wn80-150rf rch40/40-150Rf s=4

BL300-1500 RF.0=1 d=1000RF Y=15

SO 25(B)-16 RF=6F��п▒Б┬�128 l=1.0500

wn500-25rf s=4-10 HG16/=8RFF

wn50(b)- 40rf(B)-900 R

BL 50-3