1.FLANGE ADAPTER PRODUCED ACCORDING TO ISO2531, EN545, BS4772, EN598, AWWA C110.2 AND OTHER STANDARDS. 2.SPECIFICATION: FLEXIBLE COUPLING 3. STANDARD: ISO2531, EN545, BS4772, EN598, AWWA C110.2 AND SO ON. 4. MATERIAL: DUCTILE IRON 5. PRESSURE: PN10/PN16/PN25/PN40 AS PER STANDARDS. 6. INSIDE AND OUTSIDE FBE COATING (FUSION BONDED EPOXY COATING) IN DIFFERENT COLOURS AS PER THE REQUIREMENTS. 7.Hydrostatic test: Norminal Diameter mmPressureTest time≤300≥25 Pa≥15S350-600≥16 Pa≥15S≥700≥10 Pa≥10S