HG/T 20592  法兰盖 BL 500-16 RF92h451500f0-40S5 S=2G/139

BL500-16 RF92h451500f0-40S5 S=2G/139

PL25-16RFK f1=f n=-25004011/0Rmpa16 RF S=

BI 650-s2Â=11560M-19

DN20-PN100 WN RF Ⅱ S=5

47022 M700-156F/316LmS0=5

SO 100(B)-40RFB=210)

WN500-300RF¼120=1

PJ/SE200(B)-10 RF S=4.5

DN 1050-Sch120 45E3D5F S=12S35/j