GB/T 12459  弯头 DN 200-845ELJ Spampa3)-16 Rs=8 D=

DN 200-8 45ELJ Spampa3)-16 Rs=8 D=

BL150-300 RF SCH80SWN50-900RJ1991-ampamp-F0ampampampa

BL150(B)-6 FF-10rE3D-0.2 RF 0=25 S1=25 H=280CH40f bb=8900

PL350(B)-10fm0.

wn500-150rf 2061417800-1040 rf,s=20 S=20RFb=7rff s=30-

WN25-160 T-16M S=8R0.

DN 50×50