GB/T 12459  弯头 DN 350-2590EL0 T0ff rf

DN 350-25 90EL0 T0ff rf

SO 2"-150 RF

法兰WN150-600rJBL

wn20(b)-63 fm s=3.5

PL65(B)-6 RF

PL65(A)-16 RF

WN 40-300 RF Sch80

BL 50-300RF6060r

DN65-PN10 PL RF I-

WN600(B)-25FF B=606-4.00 RF SCH405 RJ 200AF@F=3.5 RF S=3.56@=8-900 RF010@400F@.5 RF=8