HG/T 20592  法兰盖 BL 40(B)-40 M0F Sch40 RF6fms=

bl40b-40m0F Sch40 RF6fms=

PL60-6RF97m00 Ss§c-

SO 65-25 RF=s=c3/u00a

PL150(B)-10RF.c)).61633-1991F

PL600-6 RJ9:so40-150rf PL65RFSagt20

LWN80-300RF B=7pampamp

PL 200(A)-16 RF b=4

WN350-150RF HG/T200=53

LWN 20-300 RF Sch80 H=289

SO 50(B)-16 FF5 HF60s0@