Due to the rapid development of science and technology in the world and in line with the goals of the National Standard Organization of Iran to produce high quality pipes and fittings, competitive with products of other countries, established a quality control laboratory equipped with the most modern and latest systems, devices and experts with high technical and experienced knowledge. Quality Control laboratory has its serious responsibility to carefully control and inspect and perform various tests in accordance with existing national and international standards on raw materials and products during the pre-production, production and after production stages and using The high expertise and experience of their technical experts and fast and accurate elimination of problems and shortcomings and finally the delivery of products with the highest quality and using the most accurate quality assurance techniques, in accordance with the expectations and demands of esteemed customers. In the laboratory of Kooshan Etesal Company, to ensure the quality of raw materials, manufactured products are tested in several stages:
The basic materials and requirements for entering in the factory are inspected based on their physical, mechanical and chemical properties, and their results are archived after laboratory approval.
The conditions of the production process have a direct effect on the quality and stability of production, so the parameters of production control and product inspection during production is of special importance in the production of optimal product, which is controlled and recorded in Kooshan factory.
After production, the final product is carefully controlled and tested based on quality control tests to ensure the desired quality.
لوازم ورزشی
List of tests performed on polyethylene pipe fittings in the laboratory of Kooshan Etisalat Company
| Test | Name | Standard test method |
| Melt fellow Index(MFI) |  |
ISO1133 ISIRI6980 |
| Density |  |
ISO1183 ISIRI 7175-2 |
| Hydroststic |  |
ISO1167 ISIRI 7175-4 |
| Soot Percentage |  |
ASTM D1603 ISIRI 7175-2 |
| Soot Propagation |  |
BS2782 ISIRI 7175-6 |
| Diamensional and Disual Control |  |
DIN8074 ISIRI 7175-1 |
