IMPERIAL PIPE CORPORATION
Thermolene
Pipe
Physical Properties
Nominal Physical Properties
Imperial Pipe Corporation extrudes from a high density copolymer resin which provides an excellent combination of toughness, strength and enviromental stress crack resistance for pressure, and non pressure pipe applications.
The pipe exceeds the requirements of the CGSB 41-GP-25M (Canadian General Standards Board), «Pipe, Polyethylene for the Transport of Liquids», requirements of ASTM F-714, «Polyethylene (PE) Plastic Pipe (SDR-PR) based on Outside Diameter». The material exceeds requirements of ASTM 1248 for PE3408 materials.
ASTM Cell Classification (black) D-3350 PE345434C
Typical physical properties of polyethylene at 73.4°F
| Property | ASTM Test | PE3408 |
| Specific Gravity, (Density) | D-1505 | 0.955 |
| *Tensile Strength, 10 000 psi | D-638 | 3.2 |
| *Tensile Modulus, 10 000 psi | D-638 | 115 |
| *Coefficient of Thermal Expansion, in/in/°F | D-696 | 0.778 X 10-4 |
| *Thermal Conductivity (At 32F) BTU/hr foot °F | C-177 | .23 |
| *Specific Heat, BTU/lb/°F | .55 | |
| Limit Operating Temperature, for pressure application, °F | 140 | |
| HDB-Hydrostatic Design Basic, psi | D-2837 | 1600 |
| HDS-Hydrostatic Design Stress, psi | D-2837 | 800 |
* Compression molded specimans. Values may vary from values for pipe products.
Thermal Expansion
| Coefficient of Thermal Expansion for HDPE, in/in/°F | 1.20 x 10-4 |
Thermolene expands and contracts when exposed to temperature variations. Thermal expansion and contraction must be considered during design and construction stages.
Recommended Design Pressures at Elevated Temperatures
| Temp. | SER.45 | SER.60 | SER.80 | SER.100 | SER.130 | SER.160 | SER.200 |
| 73.4°F | 45 psi | 60 psi | 80 psi | 100 psi | 130 psi | 160 psi | 200 psi |
| 90°F | 41 psi | 52 psi | 72 psi | 92 psi | 117 psi | 144 psi | 182 psi |
| 100°F | 39 psi | 50 psi | 69 psi | 87 psi | 110 psi | 136 psi | 173 psi |
| 140°F | 28 psi | 36 psi | 50 psi | 64 psi | 81 psi | 100 psi | 133 psi |