GB/T 12459  偏心异径管 DN 1400×10-Sch20RE55615wn/

DN 1400×10-Sch20 RE55615wn/

WN500-150 RF0RF S=6r2.5ff205 T Sch800

bi700-fs180S-16思RF/

PL 125(b)-25 rf b=Sc

bl100-300mfN

pl80(b)-6 rf d=121.93=rf s=/Ffor000FM M S

pl65(B)-16 RF db=2

WN25-600RF+4 C=/F FF00RF=201HGCADèR/

BL 450-10 M0S3h40072

wn1600