GB/T 12459  弯头 DN 500-Sch1090EL/50-

DN 500-Sch10 90EL/50-

BL50-300 T

PL50(B)-10 RF b=3 B

so125(b)-150rf Dpampam

47203-fm2500-1.0/-130 s=4.0SCH40-S=3.38.6. 4/-200 RFk=10

WN600(A)-300 RFR=1.60-@RF@4 Rc rff R19et/6B1=/=268CH3ch806

WN 6"-600 RF S=139.8

PL 700(B)-25 RF

lwn40-150rfsc00