GB/T 12459  异径三通 DN 300×300×10-Sch60TR0Rfc17F8

DN 300×300×10-Sch60 TR0Rfc17F8

WN 450-150 RF Sch40.25R2FSt/3(B)-

PL15-6 RFFf40 RRF240 RF Sch80SRJ Sc10

DN 750-Sch20 TS A10 R-195f f

SO 100-150 RF10rf1.07 R1600ch.4l

WN 25-1500 T Sch10SHG RFmpampamp001

2 FF 1400-1.0 δ1=6

wn80-40 rf s=11.1

WN50B-25R