... , JIS, EN, JB, GB, HG, UNI, API CS,SS... oil pipe and flang Technics: Forged Size: from 1/2 to 200 inch ... Collar, Loose Plate Flange, Companion Flange, Plate (PL) Flange, Spectacle FLG8 (Spacer & Blanks), Square Flange, Long Welding Neck (LWN) and so on. ... , Class900, Class1500, Class2500, Wnrf, Sorf, Blrf, Thrf, Swrf, Ljrf Carbon Steel FlangeDin2573 Pn6 Slip-On, Din2576 Pn10 Slip-On, Din2543 Pn16 ...