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General specification
The official test reports from the Korea Testing & Research Institute, a State Institute, performed for the approval for Korea Industrial Standard backs up the benefits of COD as follows:
Item | Specification/Performance |
---|---|
a. Material | Polyethylene (HDPE) |
b. Length | No limit, but 500m to 1,000m for practical use. Customer's order-length is acceptable. |
c. Flexibility | Free bending up to any degree by man-force. (Provide much better resistance & stability against earthquake compare to the conventional duct owing to sufficient flexibility and elongation nature). |
d. Compressive Load | < 292Kgf/CM2 |
e. Heat Resistance | -0.4% (at <110℃) |
g. Thermal Deformation Factor | <3% |
h. Tensile Strength | 321Kgf/CM2 (at 5% deformation of outside diameter). |
i. Friction Factor | <3% |
j. Heat Transforming Factor | <3% at being stored 60 minutes at 110℃ |
k. Impact Test | Passed (Free from distortion, twist and tear.) |
l. Bending Performance | Bendable up to -20℃ temperature |
m. Chemical Resistance (Appearance) |
Test from Solution form of the following Chemicals No defects at: 40% of HNO3 No defects at: 40% of NaOH No defects at: 30% of H2SO4 No defects at: 10% of NaCl |
n. Voltage Resistance: | AC 2,000V (< 15 minutes) |
o. Insulating Resistance: | < 200M Ohm |