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Tests | Pipe & Raw Materials |
Test Standard |
Description of the test |
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Determination of Dimensions |
TS EN ISO 3126 |
Measuring and assesment the geometric properties of pipes for compliance with the relevant pipe production standards and customer technical specification requirements. |
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Determination of Ring Stiffness |
TS EN ISO 9969 |
The rigidity value is calculated as a function of the power required to create a deformation equivalent to 3% of the internal diameter at a fixed speed. The rigidity class of the pipe is determined as a result of this test. |
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Determination of Resistance to External Blows |
TS ISO 3127 |
This is a method used to determine the resistance of plastic pipes to impact. A mass is dropped on the external area of the test samples cut from pipes, which represent a party or a unit of production taken from the extruder, from a certain height, in order to carry out the impact test. |
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Oven Test |
TS ISO 12091 |
This covers a method which is used to determine the homogeneity of the irregular walls of profiled thermoplastic pipes, as a result of the impact of heating in an oven. The faults, which emerge in samples, which have been subjected to heat for certain amounts of time, are determined. |
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Determination of Ring Flexibility |
TS EN ISO 13968 |
The ring flexibility of a pipe is determined by measuring the strength applied until a deformation of a minimum of 30% occurs on the diameter of a ring-shaped section of the pipe, at a fixed speed, or until breakage occurs before such a level of deformation is reached, and the measurement of the deformation which occurs. |
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Determination of Melt Mass Flow Rate (MFR) |
TS EN ISO 1133-1
(Metot A) |
The melting flow index is the measure of the amount of the flow of the material flowing from a mould of a certain length and size, at a specific volume and temperature, during the required period. The MFR value varies according to the chain length and density values of the material. It plays an important role in the determination of the parameters in the processing and welding processes of the materials. |
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Determination of Oxidation Induction Time (OIT) |
TS EN ISO 11357-1
TS EN ISO 11357-6 |
This is a test which is conducted in order to determine the thermal stability of the plastic material at high temperatures and concentrated levels of oxygen. The test samples are kept within a flow of oxygen, at a specific temperature, and the time which passes until oxidation begins in the material which is present together with antioxidants, stabilisers
and the supplement system which contains the other materials. |
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Determination of Creep Ratio |
TS EN ISO 9967 |
A cut length of pipe is placed between two parallel flat horizontal plates and a constant compressive force is applied for 1 008 hours. The deflection of the pipe is recorded at specified intervals so as to prepare a plot of pipe deflection against time. The linearity of the data is analysed and the creep ratio is calculated as the ratio between the two years’ extrapolated deflection value and the measured 6 min (0,1 h) deflection. |
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Determination of Density |
TS EN ISO 1183-1
(Metot A) |
The density value in plastic materials varies according to the chain structure of the material. Density provides information concerning the class and degree of crystallinity of a material. As the crystallinity rate increases, the density and resistance values of the material also display an increase in general. |
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Tests | Fittings |
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Determination of Watertightness |
TS EN ISO 13254 |
In order to check the conformity of the sealing gasket used in the corrugated pipes, certain pressure is applied to the pipes combined with the gasket for a certain period of time. |
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Visually Assessing of Effects of Heating |
TS EN ISO 580
(Metot A) |
Complete mouldings are subjected to an elevated specified emperature in an air-circulating oven or a liquid bath for a given period of time, depending upon the wall thickness of the fitting and the material being moulded. The surfaces of the moulding are examined efore and after heating, and any cracks, blisters, delaminations or opening of fusion lines are measured and expressed as a percentage of the wall thickness. |