HG/T 20592  法兰 PL 250-10 RFRF Sch20RF001 S=12=252050-1.144-27

PL250-10RFRF Sch20RF001 S=12=252050-1.144-27

WN 50(B)-25 RF=858R345 B=181 K=

LWN20-300RF B=19.05 y=22425r

SO80-300RF.0/60-1=3.

lwn20-1500rj b=15 h=232

PL40(B)-10FF B1=58 D=143 C=1

wn150(b)-25 rf s=18S=6HG/

SO 80(B)-16 ff

SO 125-150 RF B δ1= R= H=59