HG/T 20592  法兰 LWN 200-25 RF508-110 RF --rf7

LWN200-25RF508-110 RF --rf7

PL600-25 RFF1

NB/T47021 RF400-1.66.4F0s4/

PL 300-6 RF=23 f1=3 (b)-16rfF b=4b=410 S=36Cr10-150R/

PL 125-25 RFpampacSch160h-10 b=280s4040==41210 aa=460 d=15

wn 250-1500 rj/ RFh403c=150 RF Sch80=5.65n=66RJ0am1=160S).6RFFM2

P