GB/T 12459  弯头 DN 50-590ES=/60RF40s46B008

DN 50-5 90ES=/60RF40s46B008

SO 125-40 RF/sch1FFC00r0mpam2/u005F255R

PL 450(B)-10 RF.5=146 N S=0

WN 200-600 RF S=

NB/T47021 C-RF400-1.070 H=165/70 B=38 H=1

LWN200-150RF sch803.01 /u00e5/u0 rf,h8000-4.Fampam-15

LWN200-1500RJ H=/5rfF6.460RF RF7

WN10