... confirming to ASTM, DIN, EN,JIS, GOST, ETC STANDARD: 1)ANSI, DIN, UNI, BS, JIS, KS 2)Welding Neck Flange, Slip ... Carbon Steel Flange and Stainless Steel Flange be according to ANSI, DIN, UNI, BS, JIS, KS standards. the materials are ASTM ... , 20K, 30K Flanges. Normal Size: DN15--DN2000mm ( 1/2"-48") flat flange pn16