... ---threaded flange / welding flange / loose hubbed flange Norminal Size Range(DN)---10, 15, 20, 25, 32, 40, 50, 65, 80 Flanges ... ---threaded flange / welding flange / loose hubbed flangeNorminal Size Range(DN)---10, 15, 20, 25, 32, 40, 50, 65, 80, 100 ...