GB/T 12459  弯头 DN 50-645ELSRFRFRFh80/d

DN 50-6 45ELSRFRFRFh80/d

SO550-600rf4

SO350-10M1400-1.06Fh88-1=

WN 500-150 RF S=16F H=130RJ RFRo=6 RFjR

3RF700-1=6d=2=1S

bl25(b)-25 fm

BL100-300 RF1014法01F Sch40Sampsa(0f

3 FM 1500-2.5 δ0=220 RFr b=26gF001A)-6 RF S=3mpam

WN15(B)-16 RF-16 RF RF Sc