GB/T 12459  弯头 DN 1200-1045E3D

DN 1200-10 45E3D

WN 100-300 RF S=16m.html RJ F&=51600

WN 125(B)-25 RF8.ScmpamF-R4R

WN100(B)-160 M

WN 250(B)-16RFS=720-100f b=3-25RF0

BL 600-16 RFf=2.10(B)-16 FF-0.67f Sch40S=4 b=5F S=

PL80-25M.5-0b5ch80FM901.b)-40fm10718 خ(B0-0.259 pl65(b) RF

WN100