1. Type: wind power flange,wind tower flange 2. Material: carbon steel, stainless steel and alloy steel flange 3.Standard: ANSI, JIS, BS, DIN,UNI, EN, GB, AWWA, API, MSS, LWN, Orifice, 8-Figure flange 4. Size: OD up to 5000mm 5 Pressure: 75bls to 2500bls 6. Marking: Require 7. Painting: yellow, black . oil and Zn 8. Inspection: in-house and the third party