... , JIS, EN, JB, GB, HG, UNI, API CS,SS... oil pipe and flang Technics: Forged Size: from 1/2 to 200 inch ... , Reducing Flange, Pad Type Flange, Loose Hubbed Flange, Welding Plate Flange, Welding Neck Collar, Welding-On Collar, Loose Plate Flange, Companion Flange, Plate ... (PL) Flange, Spectacle FLG8 (Spacer & Blanks), Square Flange, Long Welding Neck (LWN) and so on. Standards: Ansi B16.5, A105 Class 150 ...