... :DN25~DN3500 Structure:butterfly valve CE,API,ISO,ABS high pressure steam butterfly valvesSize Range: DN50~DN2500Class Range: 150LB-900LB/PN1.0 ... of ductile iron, carbon steel, alloy steel, stainless steel, ultra-low carbon stainless steel, Monel and other materials available to order ... contact Aires.Tel:86-15921009137 86-21-59114767SKYPE: skying12341 high pressure steam butterfly valve