... DIN, BS, JIS, EN, JB, GB, HG, UNI, API galvanized steel tube flang Technics: Forged Size: from 1/2 to 200 inch ... Swrf (Swff), Plrf (Plff), Ljrf (Ljff), Spectacle Flg8 (Spacer & Blanks), Square Flange, Lwnrf (Ff), Thrf (Ff) Facing Method: rust preventing oil ... Flange, Companion Flange, Plate (PL) Flange, Spectacle FLG8 (Spacer & Blanks), Square Flange, Long Welding Neck (LWN) and so on. Standards: Ansi ...