GB/T 12459  弯头 DN 300-Sch16090E3D

DN 300-Sch160 90E3D

WN350-300 MF

3 RF 550-1.6 B0

wn50(b)-40rfs=3.5,20

pl40B)-16RF

BI 3000 PL125-2r

pl600(b)-16 rf d=832 k=768 d=740 n=28 l=22 c=20 b1=638 b=3

DN25-PN25 PL/W-

wn600-600rf scha40c

WN10B-63RJ40S0608 B00-0.6 B=2436 RF S000 d=178 c=18ampa