Product Type: Butterfly Valve Product Name:Flange Butterfly ValveProduct Details:Place of Origin: ChinaCertification: ISO9001-CEProduct DescriptionDesign standard:API 602/ BS 5352The length of the structure:length of structure of socket welding / thread end of forged steel gate valve is manufactured by factory standard=ASME B16.10/ GB/T 12221The length of structure of flange/ butt welding end of forged steel gate valve is manufactured by ASME B16.10/ GB/T 12221Inspection and test:API 602/GB/T 13927Pressure and temperature rating:ASME B16.34/ EN 12516 /GB/T 12224Product scope:NPS ½″~NPS 2″  (DN15~DN50)  CL150~CL2500   (PN16~PN420)Main body material:A105､LF2､F11､F22､F51､F91､F304､F316､F304L､F316L etc