GB/T 12459  弯头 DN 25-390EL哦38哦38

DN 25-3 90EL哦38哦38

DN 1300-Ⅱ-10 CRSg5-4 FM5FBf91

47023 fm700-2.5/70-16500/

_wn80-150 rf s=3.05WN80-150rf�

wn100(b)-16rfs=12

3 RF 600-6.4 δ0=8

HG/T20592-2009 PL125(B)-16 RF

SOH FF 10K L 80AchJ060Ech1RF0-1

PL 200(B)-16 RFB)-25RF S=1

PJ/SE 600