GB/T 12459  弯头 DN 250-Sch80S90ES

DN 250-Sch80S 90ES

1 FM 900-0.6.6 n=28 CC

1 fm 600-1.6/foH60Sch80°500.25

3 FM 800-1.6 δS

BL125-25RF JB/T81-9F S=0.25300R

BL40-300 RF Sch1

47023 FM 1000-2.5 δ=80 H=167 B=

BL 100-600 FF

BL300-63 RF S=12=1541 S R-253.5S=60bsrf4

BL259-16RF0590..RF06F