... , GOST, ETC STANDARD: 1)ANSI, DIN, UNI, BS, JIS, KS 2)Welding Neck Flange, Slip-On, Blind,Lap joint,socket welding ... 3)Size:1/2''-48''Our Carbon Steel Flange and Stainless Steel Flange be ... , 10K, 16K, 20K, 30K Flanges. Normal Size: DN15--DN2000mm ( 1/2"-48") flat flange pn16