HG/T 20592  法兰盖 BL 300(B)-16 RF023S Sch406

bl300b-16RF023S Sch406

WN300b-10RFF-RF5 Rв–’СҸвh8Sg0-m=4S=ma

2 FF 1400-1.0

SO 80(B)-25 rFch801700RF.6 B=540ch40

DN350-PN6 PL RF II

WN20"-600 RF S=

WN 100(B)-25 RF.5-25=5╨5 RF76

BL 25-150 RF=18RF/T20

SO 150-150RFScH408 b=3 S

WN250-1500R