HG/T 20592  法兰 PL 200-10 FF d=3306-1

pl200-10ff d=3306-1

WN45-25 RFam40320K==104F��Fh4080º40@4400b-1RF0sc@R5F2000-s/@

bl 80-100 RFc2@RF@4440rf0-R 32A1LB RF S…Ў S=10 S0.25 �

JWN 40×80-150 RF S=10

WN 80-600 RF Sch60 RJ��1@1S5RFSf s

WN40(B)-100 m

WN450-300RJ B/12/

IF 1600-10