HG/T 20592  法兰盖 BL 150-16 RFB)-16C=17022 RF1000-

BL150a-16RFB)-16C=17022 RF1000-

PL 80-16 RF-43/mp;a

PL50-25RF Sfm/@00-1.

SO450(B)-25RF b=5a-2009chb=

PL100(B)-16t09-1.05sFF B=596 RF Sâ”

SO500A-10RF60mm55ch8 rf. RF/m s=--16RF.0/.3 S=6S=8-200

SO 50-150 RF B14r49

PL500(a)-40 RFJ Sc3/u0g f1(B)-16RF6