GB/T 12459  偏心异径管 DN 450×10-Sch40SREp-16rfPFRF-150 FF

DN 450×10-Sch40S REp-16rfPFRF-150 FF

WN15(B)-160m5FRР В 

WN80(B)-25 RF S=4.5SRF

DN80-PN25 WN RF Ⅱ S=5t06p@ТАF5@PFF

WN20a-40fm/-1.6RF/60-120

SO250-150 FM0EFRFF115150(b)-

2 B3c2005MFF16S-17u00)-40FM6RF

WN-25(B)-25 RF050.6 ÃRFerl=��

WN50-3