HG/T 20592  法兰 WN 300(B)-16 RFSl80-D-150 RF Sch40PL/W-B R

WN300B-16RFSl80-D-150 RF Sch40PL/W-B R

JSO 300×400-150 RF

DN50-PN320 WN RF Ⅱ

3 M 1500-6.41Mrf0400 SG�=34HGf S

wn150-300RFSch400.r=4640L1

47021-M600-1.6/72SH46/13=73 D=2 300A-900 RF S=32

2 CG 2800-0.2520δ1=20520δ1=18S=4=51S=6016â24 f1-16R

WN50