HG/T 20592  法兰盖 BL 500(B)-25 G/cRF B=641

BL500(B)-25 G/cRF B=641

SO 80-300 FM--120=

bi2800-δ=u00ac/16

LWN40-1500 RJ B=30 H=180

PL150-16RF250H=70pampampampampa0

wn15-300 rf s=6F

BL100-150 RF1mb6085S175-16B)-25=3.65=4

wn 50(b)-25 rf s=5.50RFMRF012840´=

WN 25(B)-16 RF25 L=28 D=10RF0 AA=512