HG/T 20592  法兰 WN 65-25 RF s=4.5Ð

wn65-25 rf s=4.5Ð

lwn50-150 rf b0(b)-10rf115b0-4.

SO500(B)-16RFf000-1.6/chmpampampampampampampam

PL400B-25RF件 RВ°b=5/hF40/000-

PL650-16RFC

pl50(b)-16 ff d=155 c

法兰PL25(B)-40RF S=4

WN 3"-150 RF Sch40.0439Rh=1

PL80-10RF b=241c

LWN15-150