en1092-1 type 11 welding neck flange, 1/2 inch TO 80 inch, carbon steel, stainless steel 1.welding neck flange/WN flange/flange 2 ... 3.Size:1/2"-80aa,TUV,PED,ISO 4.To be equality WN flange Pressure: ASTM B16.5:150LBS,300LBS, ... ,2500LBS DIN:6Bar,10Bar,16Bar,25Bar,40Bar, BS4504,PN2.5-PN440,BS10:Table D,E,F,H, JIS:5K, ... .F., R.F., R.T.J. Stangard ASME B16.5 ASME B16.47 MSSSP-44 API605 EN1092 BS3293 ISO 15590 ...