weld neck flange 8 Inch Class 1500 Posted on February 10, 2017July 1, 2017 weld neck flange 8 Inch Class 1500 Weld Neck Flange Class 1500 Size NPS : 8″ Size DN : 200 mm. Weight : 125 kg. StudBolt Size : 1 5/8″ UNC Or (M42) x 290 Long No. of Bolts : 12 EA. Holes Diamater : 44.45 mm. [wpfilebase tag=file id=2098 /] ansi b16 5 ansi flange dimensions ansi flanges asme b16 5 Class 1500 flange dimensions raised face flange Weld Neck Flange weld neck flange Class 1500