HG/T 20592  法兰盖 BL 15-160 RJ=3.280-15RF B/0rf894-1)-662-600R

BL 15-160 RJ=3.280-15RF B/0rf894-1)-662-600R

BL50-300 TM.500rfSch401000-0

PL 125(B)-10 RF

WN150(B)-150RF0/thg206f-15000 rf5l1000-150 RF

SO 50-300 RFPL500(B)-1606f0-

TPB-21A=B)-16RFd88 s=60ÃrfF K= r

WN 40(B)-16 RF S=5

wn50(b)-63 rf s=3.5 6ä

wn40-