HG/T 20592  法兰 PL 80-16 RF B=0/

PL80-16RF B=0/

LWN80-300RF sCH4oker5RF R

1 RF 800-0.25F HG/5 S

WN 100-150 RF)-16rf/0)-25RF91@°F5@P RF40RFF SC &

47023rf1000-4.02.5-1

DN 150-Sch40S 90EL0-106R

BL150(B)-16 mF0(105

BL15-300RF0S5Wn40

so65B-25rf5700h8pampamp

so450(b)-40rf=5BM/5 R.25L R;