HG/T 20592  法兰 WN 600-16 RF N=660 A=636 S=172-20

WN600-16RF N=660 A=636 S=172-20

WN250(B)-16 RF= RF02h60K

PL200(B)-25RF8049b)-10rfrfbfmchFA)¤6 d=155600RFh1JB 40

WN 100-100RF/pquRF B2=5 FM6rfRF0R50

PL 100(B)-16 RF0h b=5/2 RF/omp1150rH60Sch

SO 125(B)-25 RF

so200-40gF h0ke 2 RFS0-1.6hh80G000b10RF/B)