Classfication Nominal ID (DN)(mm) Min.ID Max.OD (mm) Working Pressure Test Pressure Burst Pressure Min.Bend radius Mpa PSI Static state(mm) Dynamic state(mm) High Pressure 4 6 8 10 12 2.5 4.5 6.5 8.5 10 8.5 12 14 16 20 35 23 5071 3332 1.5PN 3PN í¦100N í¦2Rj 14 18 20 25 32 12 16 18 22 30 22 26 28 34 42 21 17 15 10 7 3043 2463 2175 1449 1014 middle pressure 4 6 8 10 2.5 4.5 6.5 8.5 8.5 12.5 14.5 16.4 10 1449 4PN 12 14 18 12 14 18 20 22 26 8.0 1159 20 25 20 24 28 34 6.4 927 32 40 32 40 42 52 4.0 579 Low Pressure 4 6 8 10 4 6 8 10 8.5 12 14 16 2.5 362 12 14 18 20 12 14 18 20 20 22 26 28 1.6 231 25 32 24 32 34 42 1.0 144 40 50 40 50 52 64 2.5 362 75 100 75 102 92 122 1.6 231 125 150 125 150 200 250 161 193 252 302 1.0 144 200 250 0.8 116 Note:PNíóPSíóPb are all numerical values at 20 degree.