weld neck flange 8 Inch Class 600 Posted on February 11, 2017July 1, 2017 weld neck flange 8 Inch Class 600 Weld Neck Flange Class 600 Size NPS : 8″ Size DN : 200 mm. Weight : 55 kg. StudBolt Size : 1 1/8″ UNC Or (M30) x 190 Long No. of Bolts : 12 EA. Holes Diamater : 31.75 mm. [wpfilebase tag=file id=2136 /] 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