... , Welding Neck Collar, Welding-On Collar, Loose Plate Flange, Companion Flange, Plate (PL) Flange, Spectacle FLG8 (Spacer & Blanks), Square Flange, ... , Type12, Type13 Carbon Steel FlangeBs4504 Sani1123 1000/3, 1600/3, 2500/3, T/D, T/E, T/F Carbon Steel FlangeAs2129 Table D, Table ... H, Table E Carbon Steel FlangeGost 12820-80, 12821 ...