GB/T 12459  偏心异径管 DN 125×10-Sch160REinvoker/00

DN 125×10-Sch160 REinvoker/00

WN 65-300 FM Sch40S1Sch40SRF Sch12

bl25B-100m6.4-6rfjs/R

WN50-600 RF B=3.9°ã�

bl500(b)-10 rfff s=

WN80-600RFB=72.9

WN80-300 RjES

BL1400-150RFWN26ru-0RF30

WN15(B)-16 RF S=4

bl50-150 rf l=3/4&ampampampampampampamp;