GB/T 12459  弯头 DN 80-Sch1090ELR26 n=1

DN 80-Sch10 90ELR26 n=1

Wn150-150 RF Sc

WN40(A)-63M-0.670-1c=6d5/9

1 CFM 1600-0.2520δs=20)-16RFa0 r g

47023 c-rf600-4.012.F

so600(b)-16rf s=8°so30083/u1312-

20615 wn150-150rf sch40B008e/u00a5/09 SO200(A)-1=

BL 25-600 MWN8040S/H=1B=623pamp

WN15(B)-