en1092-1 type 11 welding neck flange, 1/2 inch TO 80 inch, carbon steel, stainless steel 1.welding neck ... service 3.Size:1/2"-80aa,TUV,PED,ISO 4.To be equality WN flange Pressure: ASTM B16.5:150LBS, ... ,E,F,H, JIS:5K,10K,16K,20K,30K· Face Type: F.F., R.F., R.T.J. Stangard ASME ... ISO 15590-3 : Non standard Flange According to the drawing size/charting from dn15 to dn2000,weight from 0.5 kg to 5 tons