GB/T 12459  偏心异径管 DN 300×10-Ⅱ-4.5REREmpampeqid=80ebf

DN 300×10-Ⅱ-4.5 REREmpampeqid=80ebf

WN100(B)-16 RF S=60m80s1-600R

wn200-150 rf s=8 hrff=0-6.4 /u00c3/u00a9 Sch80/@-1R120=5

BI 7001-6 RF0650RRFCH400=1000.25-b1=1700RF.6 B=5

WN15B-16 RFmpampampampampa-16 RF(B)-25 RF S=3RRF SCmpampam=144- rf25B-16rf