HG/T 20592  法兰 PL 50(B)-6 RF b=2 f1=3

pl50(b)-6RF b=2 f1=3

WN350(B)-40 RF S=1111517 PL25t 2059et/6RF-1O1.RF

PL 40-10 fF 1am6/uo0rfH

SO400-150M0SF/C

WN 350(B)-63 RF S=103 A

2 CG 1600-0.2520δ1=2071

2 FM 500-0.2520δ1=61=2

PL25(B)-25 G b=0c r0 L=3

SOHRF10K500A4)-16 RF.0F-25136 c=

PL350(B)