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RAW MATERIAL
Polypropylene Random Copolymer:
ALMATHERM 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 applications. 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 alternative to the traditional systems.
Polypropylene Copolymer type 3 corresponds to German DIN standards:
a- DIN 8077 Dec. 1997 PP Pipe Dimensions
b- DIN 8078 April 1996 PP Pipes General Quality Requirements and Testing.
Standards Applied in Production:
E-DIN 1988 Drinking water lines in premises.
DIN 8078 PP Pipes general quality requirements and testing.
DIN 8076 Pressure pipes consisting of Polyethylene metal clamping joint.
DIN 16928 Pipe connections and components layout.
DVS 2207 Welding regulations for plastic pipes.
DVS 223 Testing of welding connections of thermoplastic plastics.
DIN 16962 Pipe joints and components for pressure pipes of polypropylene.
DVS 2208 Machines and devices for welding of plastic pipes.
DIN 4109 Sound insulation in building construction.
VOB Part C Installation work of gas, water and sewage.
DIN 18381 Lines within buildings.
DVGW W308 Regulations and requirements for fittings, pipes & drinking water installations.
LABORATORY OPERATIONS & TEST DEVICES
1-MFI (Melt Flow Index) Test Device :
This device is used in simulating the material's flow behavior before being processed in the extruder. This device gives us information regarding the flow rate of the material in the unit temperature and time. This helps us to have information on the possible behavior of the material in the extruder. The quality Standard for this test is ISO 1133.
2- Precise Balance :
Using this balance, the weight of the material which was passed from MFI device is determined according to the standard ISO 1183 separately in the air and in the liquid whose density is known. After having these weight figures, the material's density is determined by using the specific density formula.
3- Izod-Charpy Test Device :
With this device, the amount of the energy absorption and the possible applicable force on the unit area are determined by using free falling method using materials having different weights. By doing this test, we obtain information regarding material's behavior at the different loads with sudden impacts. The standards applied for this test are TS 1004, TS 1005, ISO 179 and ISO 180.
4- Pulling-Pressing Test Device :
Using this device, we obtain information’s about the maximum load strength, elasticity module (the maximum force strength per unit area), maximum tension, elongation in percentage, deformation, elongation at break point, tension at break point etc. of the product. By means of these tests we can make forecasts on the possible behavior of the material in the working conditions. In these tests ISO R 527 standard is applied.
5- Hallow Die Punch (Sampling Device):
This device is used for the preparation of the sample which will be tested in the pulling test device. The sample is prepared in accordance with Standard No. ISO 527.
6- Shore (Hardness Device):
This device is used for the determination of the material‘s hardness. When we apply load on the sample, if the material is too soft then it will be pressed like paper while if it is too hard then it will be broken. For this reason the hardness value of the product must be within the range of the values mentioned in the Standard No.DIN 53505.
7- Microtom Device :
This is a device used to cut small pieces which can be monitored under microscope for the purpose of inspecting the infrastructure of the material.
8- Microscope Image System :
This is a system used for monitoring the fibro structure of the material. The aim of this test is to secure for the material to have a homogeneous infrastructure. If the fibro's image is not in the linear form then it means that there is a mistake either in the production stage or in the quality of the raw material itself.
9- Furnace-Deep Freezer:
These devices are used for shock cooling or heating. In certain intervals of time impact test is applied on the material which is hold in the furnace or deep freezer and its behavior is monitored at different test temperatures.
10- Furnace :
This device is used in thermal strength test. The aim of this test is to monitore whether the length of the material exceeds more than 3 % when applied to a certain temperature for certain time. This test is important because at considerably higher temperatures the material expands and elongates but at low temperatures it shrinks. But after application of higher or lower temperatures, the material does not return fully to its normal sizes in the normal temperature. This character leads to a change from round shape to oval shape in the close pipe systems. The standard applied for this test is TS 5450.
11- Pressure Test:
For the pipes produced according to the Standard TS 5439, to monitore the strength of the pipes to the pressure, a pressure test is applied under 100h (at 20 °C), and 165 and 1000h (at 80 °C). The standards used for this test are ISO 4427 (for PE 100), ISO 4437 (for PE 80) and TSE 10827.
12- Momentum Strength Test:
In addition to the leak test also strength test is applied with the aim of testing the harmonical work of the metal fittings with the plastic. In order to be able to apply a 95 °C temperature to the pipe it must resist to a 4 kgm momentum.
13- Cross-link Ratio Determination Test:
To monitore the success of the cross linking in the PEX pipes, a test is done according to the Standart TSEN 579. The material must have a minimum cross link ratio of 75% (for PE-Xa), 65% (for PE-Xb) and 60% (for PE-Xc and PE-Xd).
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