HG/T 20592  法兰 SO 20-40 T-50 RF/

so20-40 t-50 RF/

wn300(b)-10rf s--1

WN 80-150 RF B=69

2 C60h b15F Scch80ذ�

PJ/RJ50(B)-10 RF

WN25-100 RF0-165 Sam�am Sch8

WN 1/2"-600 RF S=26

WN 1/2"-300 RF B=15

WN RF 10K 25Af0-1.6/74-

WN 3"-150 RF Sch10S B=820s/��rfRh8040@900CH4S