High quality carbon steel forged flange 1. Types:SO,WN,PL,BL,SW 2. ... ,ASTM 3. Size:3/8"-96" High quality carbon steel forged flange Manufacturer 1. Types:SO,WN,PL,BL,SW 2. Standard ... ,ASTM 3. Size:3/8"-96"1. Types:a) Forged steel flanges b) Plate cutting flanges 2 Metarial: CS AS SS ...