HG/T 21574  吊耳 SP-50

bâ…&nbsp500-f/@A WN1000-1

BI 168

3 RF 1000-6.4 δ0=8

WN100-10 RF

B WN 950-300 RF S=10

WN125(B)-25 RF S=6RF 25RFR

WN 200-150 RF Sch40S

SO80-150 M03II 310FM S=6.0000(b)-150AS

WN 4"-300 RF Sch80

PL20(A)-6 RF b=3rf10SFFc RF00-6.4��F