HG/T 20592  法兰盖 BL 250-16 RF-2.5 δ1=1200 RF S=5F A

BL250-16RF-2.5 δ1=1200 RF S=5F A

PL 150(A)-25 RF0FF330 C=1forum.html.com/@PL

bl 32-150 rf1000q6u0009p40 B=205F00-1.-102892

WN25(B)-16RF600-2)-10R0.2��=6fhtmlh405B)-25 RF01b=3t

WN15-1500 RF FF RF S=12F=9RF H=130RJ RF

PL250B)-10 FF40r7RF Ⅱp40S6