GB/T 9124.1  法兰 DN400-PN6 PL RF Ⅱ a

DN400-PN6 PL RF Ⅱa

WN80-150 RF S/50-25rf0sRFRF0RFS

PL20(B)-6 RF178h1180 RF Sch12

3 FM300-6.4-9 fm1200RFFF FMF-15u00rf hg/t20615=630RFrf5R)-1F S=6RJ=2

3 C7/pqu

WN 25-300 RF SCH40S15h

BL 4"-150 RF

PL 750-10 RF560RF3-

WN 3"-150 RF S=7.6

wn5