GB/T 12459  弯头 DN 150-390EL4.

DN 150-3 90EL4.

wn500b)-16rf0RFf81/763.5rampam=48 S= H=fF0

WN300-600RJ B1=1

WN200(b)-16RF B=1590/8=73/50RF

SO 500(B)-150 T�-25rfRC271uot16 T T T T40RF B=43)

WN80(B)-40M S=4f s30

BL300-6 RF4 RJ Sch

PL20(B)-10 RF35)

WN80(A)-16 RF S=5.6

PL 19-150 RF0/