ANSI flange 1. OEM service offered,ISO9001:2000 authentication, 2.15 years of experience, JINAN JIANGHUA FORGING MACHINERY CO.,LTDProduct Information: 1. Size: 1/2" - 24"(DN15 mm-800 mm)2. Standards: ANSI, BS, DIN, UNI, JIS, GB, Non-standard etc. or as customers' drawings for special use.3. Materials: Carbon steel, Stainless steel and Alloy steel etc.4. Pressure Ratings: Class 150, 300, 600, 900, ...