weld neck flange 14 Inch Class 400 Posted on February 11, 2017July 1, 2017 weld neck flange 14 Inch Class 400 Weld Neck Flange Class 400 Size NPS : 14″ Size DN : 350 mm. Weight : 105 kg. StudBolt Size : 1 1/4″ UNC Or (M33) x 210 Long No. of Bolts : 20 EA. Holes Diamater : 34.925 mm. [wpfilebase tag=file id=2158 /] ansi b16 5 ansi flange dimensions ansi flanges asme b16 5 Class 400 flange dimensions raised face flange Weld Neck Flange weld neck flange Class 400