GB/T 12459  弯头 DN 100-Sch40S90EL

DN 100-I-Sch40S 90EL

LWN20-300 RF

WN 250-150 RF S=12s

b wn1000-150rf sch40F s45

PL125- 10FM0FB)0.Rpampa.6 96/FRFf.5δs=8M-S C0F5F S=4200-4.0/84-195 rf h.6F-1.610S=0

WN65(b)-25RF.1F)-11.FB0RF1.5 C=4

SO 200(B)-16RFS=/-1.0SR

WN100-40RF0

BII4000ch RF(a