HG/T 20592  法兰 PL 20-10 FF0 B1=1706s=10

pl20-10ff0 B1=1706s=10

PL25B-25FF.601voker=p0RF r6R160 H=1

bl100-150 rf п╟п÷п╒п┴п╟п

3 B50F2w84h80B)-16 RF250(B)

wn100(a)-160 rj s=7.1r RFRFS

DN 65×15-Sch60 RE

BL150-300 RF C

5 CM 700-1.020δ00RH=05

SO65(B)-25RFf5

WN 125(B)-16 RF Sch80