... DIN, BS, JIS, EN, JB, GB, HG, UNI, API UNI stainless steel flang Technics: Forged Size: from 1/2 to 200 inch ... , Welding Neck Collar, Welding-On Collar, Loose Plate Flange, Companion Flange, Plate (PL) Flange, Spectacle FLG8 (Spacer & Blanks), Square Flange, Long ... AD-2000 certification. Inspection: Factory In-House Or Third Party Shape: Equal Usage: connecting pipe line and keep its leakproofness; ...