HG/T 20592  法兰 PL 40(B)-16 RF-- A=40 RFR13526

PL40(B)-16 RF-- A=40 RFR13526

PL80B-16RF2S=1.6=55u00

WN 300(B)-16 M-=3/3 RF180mch S

DN40-PN10 PL/W-A RF Ⅱ S=Rc0c00 RF6 R0J5RF@F R

pl20(b)-10rfhg.f/u0RF.54u200900m4062655

DN800/PN16/11B Sch40S00 rf shc1885 R1mRF�77.

PL100B)-25RFRF S=S=73��

PL