HG/T 20592  法兰盖 BL 20-100 G-20�¦-1f s=285F b=6sch14

BL20-100G-20�¦-1f s=285F b=6sch14

PL80-10RFb=22.55 s=в463dnF s=5 S=3ch60f-16R

WN80-10 RF S-1.040uc=24 δ=60 H=125eot/

WN20-63G f2=3 C=16 H=45 D=105

WN100-300 RF B=1556S=3.65F=435RF5F14��C=4

3 FM 1800-1.6s51F�´=762)0RF=

1 RF 1700-0.25SR0 R