GB/T 12459  弯头 DN 80-Ⅱ-490ES

DN 80-Ⅱ-4 90ES

PL65(b)-16RF

SP-640S δSO10

WN450-600RF Sch40450-1

WN 50(B)-16 RF/u0/

so125(a)-16RF1J80

wn50b-40rfRF0mm20(

WN 150(B)-16 RF Sch40

WN100-16RF

PL 65(B)-16 RF B=115 b=3��Б�4 hg/aa=0¬Ď�14/80- RF Sch40F S=3T 20S=7.11ampa4065JfFrf67