GB/T 12459  弯头 DN 125-Sch2090EL20 FM S=8)-6 RFF Spam

DN125-Sch20 90EL20 FM S=8)-6 RFF Spam

PL 400(B)-10 RF5=859213.56F050 FF B=1600

wn600-150 rf s=ch203

BI 500ch40WN25-40 M S=0-B)-40

wn80-300 g

wn40(b)-40rfH=55-15 FM Sch-20623-2001

wn10(b)-40 mmî´=55S=b3085

bl65-160 rf0025(b)-4Rfmpqrf40 RF B=89fm

wn7