HG/T 20592  法兰 WN 350(B)-10 RFB=6

WN350B-10RFB=6

PL32B-40Mf(B)--1

SO 25(B)-16 RFh40 RF RFF L150(A)-6RF6 RF RF15(B

B BL 1"-300 RFs=13S=8.8s2.6/

SO 250(B)-16 RF S3027RF

LWN50-600 RFfamp320/70th=240 c=2

SO 50(B)-16 RF-100 RF

SO50(B)-16RFpampampamh801510s

WN 2"-900 RJ Sch40 Y1=