... (DN)---10, 15, 20, 25, 32, 40, 50, 65, 80 Flanges---threaded flange / welding flange / loose hubbed flangeNorminal Size Range(DN ... -94, JB9112~9123 ANSI B16.5CE and certification: ISO9001: 2000, API, BV, SGS, LOIYDApplications range: ---Petroleum, chemical, power, gas, metallurgy, shipbuilding ...