front barrel flang Size: from 1/2 to 200 inch (DN15- ... , BS, JIS, EN, JB, GB, HG, UNI, API CS,SS... front barrel flang Technics: Forged Size: from 1/2 to 200 ... , Welding Neck Collar, Welding-On Collar, Loose Plate Flange, Companion Flange, Plate (PL) Flange, Spectacle FLG8 (Spacer & Blanks), Square Flange, Long Welding ...