... #steel 2.Forging,rolling 3.hardness of 62-64 4.4-6inches,DN125,DN150,DN175 175 MF flange Item No:MF-001175 ... clamp, bolt clamp, screw clamp, wedge clamp in different sizes 3.5″-6″longer use life, nice lookhigh quality product with ... , pls do feel free to contact us directly. 175 MF flange