... , Petrochemical, Energy, Nuclear, Automotive, Military, and so on..ANSI Welding Neck FlangeClass:- 150, 300, 600, 900, 1500, 3000Size:- ... 1/2" - 60"Types: - Welding Neck (WN), Slip-on (SO), Blind (BL), Socket Weld ... GH600, GH3128, GH3030, GH2132, GH1140Our standard Flanges:- ANSI B16.5, B16.47- ASME B16.5, B16. ... 577-8588-8633Website: www.chinachaowei.com ANSI Welding Neck Flange