GB/T 12459  弯头 DN 25-Ⅱ-390EL0S6RF0g060RF/ef/u0Sh-130300r

DN 25-II-3 90EL0S6RF0g060RF/ef/u0Sh-130300r

pl250(b)-16rf b=492-2009ch8

wn65(b)-300 g/56�´=p

1 RF 1300-0.6 δs=86R060

WN 450(B)-16 rf S=10

WN40-600RF Sch40 S=1710.2ц├RF900RF

SO500-150RF00-1.0m3 d=78 &amp

WN 150-600 RF Sch605fСӮпҝҪ-

WN