HG/T 20592  法兰盖 BL 600-6 RFB=3板57 D´1=RF R

BL600-6 RFB=3板57 D´1=RF R

BL 500-600 M-1 S00-f/CFsh9F-

LJ 14"-600 RF Sch6

SO 200-150 RFFMc 90Empa2 H=10330-280

WN 250-150 RF Sch10S4 FFm-10 RF/p-RF S=0FR

PL 350B-10 RF RFrf 1JsRF@F SRF060RF0 LT RF Sch40h20=8.06 HG/T 20615-200916RF S=5.6 HG/