法兰 SO 50(B)-150 RF b=5

so50(b)-150 rf b=5

lwn 50-150 ff sch

so125(b)-10mfm0 RF SCH40550-1.040

so350-150fF4.55/110665 AA(hg/40013FRFsc1

so 300-16 rf5m c=34-6 RFÂn1200-15

so 40-25 fmt/

wn 300-300 fm b=305

so 400-150 RF scF12-h¤b)-

NB/T47023 FM800-1.6s0

SO 350 -16 RF

wn150