weld neck flange 10 Inch Class 600 Posted on February 11, 2017July 1, 2017 weld neck flange 10 Inch Class 600 Weld Neck Flange Class 600 Size NPS : 10″ Size DN : 250 mm. Weight : 86 kg. StudBolt Size : 1 1/4″ UNC Or (M33) x 215 Long No. of Bolts : 16 EA. Holes Diamater : 34.925 mm. [wpfilebase tag=file id=2137 /] ansi b16 5 ansi flange dimensions ansi flanges asme b16 5 Class 600 flange dimensions raised face flange Weld Neck Flange weld neck flange Class 600