GB/T 12459  弯头 DN 500-490EL0560ch80=36S=

DN 500-4 90EL0560ch80=36S=

21RF600-1.0405RF S=t=1260610 N=/l112fAhJ25300 R-130 S=

WN 150(B)-25G s=4.5 C=34.5

5 CM 1700-4.020δ0=14

PL125(B)-16RF C=20Sc

wn500-10rfm

so300-25gF=

wn300-150rf sch8f1 R0 L=06/

WN250-6 RF80116)-16 R/h40S/4050(�RF40

WN150