GB/T 12459  弯头 DN 125-Ⅱ-945EL-

DN 125-Ⅱ-9 45EL-

WN300-600RF S=16ua40≥ÐS=3.0

3 B4sch201.i1RFRFch40 Ss RF RF63M30 CS

3 M 2000-4.0 δ0=3275 b

DN300-PN2.5 WN RF I

a 2400FFF0rf d=76FmpqFfR:/400B

LWN 300-600 RFS=3 B=150

20615BL600-150RF0RJ50RF B50(b)-16fms=6/176-29H =266F0r0

wn100-