HG/T 20592  法兰盖 BL 50(B)-2.5 RF5 TA=57 D=Sch40S fFF S1556316

BL50B)-2.5RF5 TA=57 D=Sch40S fFF S1556316

PL40(B)-16 RF f1=2.5 b=3-2F00c2/u00b0WN250-1

wn20-1500rjs

BL100-150 RFRF Ⅱ S=600 RF C RJ2 S=4F-

3 FM 350-4.01.6070s/S-1.0RFR=80ELSF S

BL200B-150RFf n

pl65(b)-10 rf n=4

PL150(B)-16 M D=280

PL65(B)-10RF HG/