GB/T 12459  弯头 DN 65-490ES

DN 65-4 90ES

2 A3-6000 fM Sh6

c-bl250-10rf7021 C

BL 50-16 RFb)5RF000-1‰0710/100

WN15(B)-160m5FRط°آ¨ط�

HG/T20592-2009 WN15-25RF/61

PL350-10RF M RFFM 350-1.6/40-98RF Sch-1.0 HF/-0.6

TPB-20-4.0/

WN40B-16FMrf1

BL 25-16 RFS=30.9b1=5rSc/80s00 RJ.