1 .............................................................................................2 .....................................................................2 .................................................................................2 .....................................................................................3 2 2. 1 2. 2 2. 3 2. 4 PP-R 2.51.5m 3. 1 ,(1 3. 2 PP-R12 3 3. 3 "" 3. 4 3. 5 Demm 20 25 32 40 50 63 mm 650 800 950 1100 1250 1400 mm 1000 1200 1500 1700 1800 2000 1000-1500 mm 3. 6 4. 1 .250. 1 4 4. 2 2 4. 3 (3) 4. 4 4 5 4. 5 Dmm mm s s min 20 14 5 4 2 25 15 7 4 2 32 16.5 8 6 4 40 18 12 6 4 50 20 18 6 4 63 24 24 8 6 75 30 30 10 8 90 32 40 10 8 110 38.5 50 15 10 5,50% 4. 6 4. 7 5 4. 8 6 4. 9 5 6 4. 10 4. 11 4. 12 .1.0 4. 13 .1.5