GB/T 12459  弯头 DN 125-490EL

DN 125-4 90EL

æ³⬢å⬦° PL25(B)-16 RF

SO100-10 RF

PL100A-10FF

SO25(B)-16 RF

PL40(B)-16 RF

JWN 25×50(B)-16 RF S=5

bl25-16 rf b=4æ�h40RF Sch80S

WN50-16RF S=≥3.560m B=9°

wn50-300 rf h1=8 s=C1rj sch80/fH10F5 FM0-1.66 RF1=ScF RF S=12F/PF