Raw Material Polypropylene Random Copolymer
SHK Pipes and fittings are produced from Polypropylene Random Copolymer Type 3 as raw material having low melt flow rate, high molecular weight and good flexibility.
This raw material is recommended for the production of pressure pipes including potable water transfer lines, hot and cold water transfer lines, floor heating and also for chemical industry application. Good long term pressure resistance and easy processing and installation technique give cold and hot water systems made of PP-R pipes an advantage as an alternative to the traditional systems.
Polypropylene Random Copolymer Type 3 corresponds to German DIN standards.
(a) DIN 8077 Pipe Dimensions
(b) DIN 8078 Pipes General Quality Requirements and Testing
(c) DIN 16962 Pipe Joins and Components for Pressure Pipes of Polypropylene
As per IS : 15801 & DIN 8077 : 1999-07 Wall Thickness and Mass Corresponding to Different Pipe Sizes
| D | SDR 11/PN10 | SDR 7.4 / PN 16 | SDR 6 / PN 20 | Outerdiameter of pipe (mm) | S Thickness pipe in mm | Mass in kg/m | S Thickness in mm | Mass in kg/m | S Thickness in mm | Mass in kg/m | 20 | 1.9 | 0.107 | 2.8 | 0.148 | 3.4 | 0.172 | 25 | 2.3 | 0.164 | 3.5 | 0.230 | 4.2 | 0.266 | 32 | 2.9 | 0.261 | 4.4 | 0.370 | 5.4 | 0.434 | 40 | 3.7 | 0.412 | 5.5 | 0.575 | 6.7 | 0.671 | 50 | 4.6 | 0.638 | 6.9 | 0.896 | 8.3 | 1.040 | 63 | 5.8 | 1.01 | 8.6 | 1.410 | 10.5 | 1.650 | 75 | 6.8 | 1.41 | 10.3 | 2.010 | 12.5 | 2.340 | 90 | 8.2 | 2.03 | 12.3 | 2.870 | 15 | 3.360 | 110 | 10 | 3.01 | 15.1 | 4.300 | 18.3 | 5.010 | 160 | 14.6 | 6.38 | 21.9 | 9.040 | 26.6 | 10.60 |
Thermal Properties
| Properties | Test Method | Unit | Value | Thermal Conductivity at 23 C | DIN 52612 | W/mok | 0.23 | Specific heat at 23 C | Calorimeter | Kj/kgok | 1.73 | Coefficient of linear thermal expansion | DIN 53752 | K-1 | 1.5 x 10-4 | Under weight deformation temperature 1.8 N/mm2 | ISO 306 | °C | 44 | 0.45 N/ mm2 | ISO 3146 | °C | 42 | VICAT softening point | 0.095 | °C | 130 |
Mechanical Properties
| Properties | Test Method | Unit | Value | Tensile Stress at Yield (50mm / minute) | ISO 527-1,2 | MPa | 24 | Tensile Stress at Yield (50mm / minute) | ISO 527-1,2 | % | 10 | Tensile modules (secant ) | ISO 527-1,2 | MPa | 850 | Flexural Modulus | ASTM D 790 | MPa | 850 | Tear Strength | ISO 527 | MPa | 40 | Elongation at tear | ISO 527 | % | 800 | Shore D Hardness | DIN 53 505 | – | 65 | Pipe Friction Factor | ISO 179/leA | – | 0.007 | CHARPY Impact Strength | 23°C | ISO 179/leA | KJ/m2 | 22 | 0°C | ISO 179/leA | KJ/m2 | 4.0 | -30°C | ISO 179/leA | KJ/m2 | 2.5 | CHARPY Impact Strength (unnotched) | 23°C | ISO 179/leA | KJ/m2 | No failure | 0°C | ISO 179/leA | KJ/m2 | No failure | -30°C | ISO 179/leA | KJ/m2 | 43 |