GB/T 12459  弯头 DN 50-Sch4090EL D=0

DN50-Sch40 90EL D=0

WN 2"-150 RF Sch40S

A WN 28"-150 RF B=Sch80

WN 25-150 RF

WN80-16RF,S=8

法兰 PL450(B)-16RF6/40

WN20-300 FF Sch

DN 50-Sch40S 90EL

LWN25-150 RF

BL 400(B)-6 RF S=65 R1H=298-40/¬ÂSd=1432500ml00RFoFsch40000.25 ÃŽf/ S=1e/