GB/T 12459  弯头 DN 20-Ⅱ-390ES016 h296 S=

DN 20-Ⅱ-3 90ES016 h296 S=

bl25-40 rf/u00c3/u00a3/u00c2/u00a4

pl80-16rf(a

wn150-300 rf s=10

pl50-10ff46RcrFF7.5 RJ250/@-R�

DN 100×50-Ⅱ-3.2 RE/S=

wn80(a)-150rf sch40 h1=11S=6 F-15Р вf RFm5-251

wn150-40rf s=56F63rfs=11F RF8022RF S=6FR

wn80-300