HG/T 20592  法兰 WN 350(B)-6 T S45150 RF=3L5RF2R9mpamampa

WN 350(B)-6 T S45150 RF=3L5RF2R9mpamampa

wn150-150 RF S6 rf5rfп╡п╓W9*B=41

PL80(B)-16M=-416

WN200-150RF.2thg20615 wn400RFRF Sch802

LJ 3 1/2"-400 LT Sch160FF B=6

SO 80(B)-10 FF20309 WN500(B)

BL100(a)-600RF9/

PL 500(B)-6 RF C=7.5 G

wn250-900