HG/T 20592  法兰 PL 500-10 RF D=1010 f1=3 C0SmS= b==2m24705ï؟½S/504

PL500(A)-10RF D=1010 f1=3 C0SmS= b==2m24705ï؟½S/504

BL125-150 RF

WN 400(B)-63 FF S=8

47021 M 500-1.6R4RF-0e200S-s==60c90S.

PL 20(B)-16 RFf80-90010fm3¦RF FM(B)-16 FM5RFS-1655198

B WN 800-150 RF B=7

WN250-100 RF900-

3 FM400-1.6/50-11128hF-2.0´0=1