HG/T 20592  法兰 WN 80(B)-25 FF s=8S1=8 S=12J SCH40ampam25/L B=388 K/

wn80(b)-25 ff s=8S1=8 S=12J SCH40ampam25/L B=388 K/

PL 80(B)-40 RFos=34.

PL65(a)-16RFn50(b)-10 rf s=5-165=5 AA=62)-10 rf b

wn100-150 rf h50-1rf6R

3 CM 300-6.420δ0=12006lFHG16 RF S=K=10/18

PL100(B)-16 RF d=880 n=2ch100b1 L=FFR10/

SO100(B)-16 RF b=151