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Quality Assurance |
Our Company has received an ISO 9001:2000 certificate in respect of our quality management systems in the year 2002. The present certificate is valid till March, 2010. We maintain quality at all stages of manufacturing process starting from raw material procurement to manufacturing of finished product. All our finished products are tested in our quality control laboratory to adhere to the laid down quality standards. Our Company also facilitates third party inspection on the request of the customers.
As per BIS Norms IS:4985-2000, we are conducting the following tests on PVC pipes: |
Visual Appearance Test |
| The internal and external surfaces of the pipe shall be smooth, clean and free from grooving and other defects. The color of the pipes should be grey. |
| Dimensional Assurance Test |
| The Wall thickness, Outside Diameter and Lengths should meet the specified requirements as per IS:4985-2000. |
| Opacity |
| The wall of the plain pipe shall not transmit more than 0.2% of the visible light falling on it when tested. |
Impact Test |
| This test is carried out for the determination of the resistance to external blows of PVC Pipes manufactured according to BIS Standard. Test pieces are subjected to blows from a falling striker, of specified mass and shape, dropped from a known height on to specified positions around the circumference of the test piece. |
Chemical Test |
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Sulphated ASH content Test (as per IS: 4985-2000):
This test is carried by burning the substance and transforming the residue into sulphates using concentrated sulphuric acid and, finally heating the residue at 850 deg c until constant mass is reached.
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Type Test - Effect on Water Test :
The pipes shall not have any detrimental effect on composition of water flowing through them. When tested by the method, the quantities of lead, dialkyl tin C4 and higher homologues and any other toxic substances extracted from the inner walls of the pipes shall not exceed the specified limit of 0.01 mg/l.
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Reversion Test :
When tested by the immersion method prescribed in IS:12235 (Part 5), a length of pipe 200 + 20mm long shall not alter in length by more than 5%. In the case of socket end pipes, this test shall be carried out on the plain portion of the pipe taken at least 100 mm away from the root of the socket.
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Vicat Softening Point Test :
When tested by this method, the vicat softening temperature of the specimen shall not be less than 80 deg c.
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Density Test (as per IS: 13360/Part3/Sec 1) :
As per BIS Standard, the density of the pipe shall be between 1.40 and 1.46.
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