6′′ Class 300 A105 ANSI RF-Wn Flange Dingxiang Beicheng Flange Co., Ltd. Base Info Standard:ANSIType:Welding FlangeMaterial:Carbon SteelManufacturing Way:Forging6′′:300# Description Pre:Stainless Quick Connector Next:5′′ 150# Carbon Steel A105 ANSI B16.5 Silp on Flange