GB/T 12459  弯头 DN 25-Ⅱ-Sch80S180EL

DN 25-Ⅱ-Sch80S 180EL

b wn900-300g0RFchamF02/RF20-

47023 FM350-1

PL 65(B)-10 RF20592

WN25-600RJSch40sm.6F S=8 G00RF6Mn254-/n=+c00(25rf=18/RF000S=

pl25-10rfmpampa

PL 80(B)-16 RFFM5 RFn450-600rjt)�000-1.0F b=400

PL 50(B)-16 RF K=120.5 L=20 b=4

LJ 3