Quality Assurance

We follow an established quality assurance policy in our company, to ensure that every piping system developed by us is of superior quality. With the assistance of this policy, we have acquired various test certificates that are enlisted below:

  • Tripple Layer PPR Pipe Test: CIPET Govt. of India,  Asr
  • Test for Creep Strength & Overal Migration: CIPET, Asr
  • Tripple Layer PPR Pipe Test: CIPET, Ministry of Chemical & Fertilizers, Govt. of India
  • Thickness of Pipe, Creep/Impact Strength, Heat Reversion Test:CIPET
  • PPRC Pipe: CIPET, Ministry of Chemical & Fertilizers, Govt. of India, Asr
  • Test for Ultra Violet Radiation test (UV): CIPET, Asr

According to our quality policy, we conduct tests are all stages of the production to ensure that only the flawless and high quality PPR pipes and fittings are send to our customers. There are various tests carried out on the developed products.

  • Part 1 :     Measurement of outside diameter
  • Part 2 :     Measurement of wall thickness
  • Part 3 :     Test for opacity
  • Part 4 :     Determining the detrimental effect on the composition of water
  • Part 5 :     Reversion test
  • Part 6 :     Stress relief test
  • Part 7 :     Resistance to sulphuric acid
  • Part 8 :     Internal hydrostatic pressure test
  • Part 9 :     Impact strength at 0oC

Quality Control

There are various aspects of quality control followed in our company. These aspects ensure that the plastic piping systems offered by us, are precise and work well in diverse conditions. Some of these aspects are system control, internal control, test and acceptance of incoming goods, in - process inspection and test, process control, final inspection and test, external control, and storage / packing / dispatch. Each one of these is briefed below:

System Control

All the processes and results of work operations have to be properly documented. This requires following:

  • Test and acceptance of incoming goods
  • Process control
  • In-Process Inspection and test

Final Inspection and test

We follow following regulations for the quality control of potable water pipes system:

  • DIN-Guidelines
  • DVGW - Working Sheets

These guidelines and standards explain the least needs for the internal control. The conformity with the standards is verified via laboratory tests and internal audits, by independent institutes.

Internal Control

Internal control of quality includes that the all the tests are carried out different stages by skilled personnel, in innovative laboratory. Following tests are conducted:

  • Control of Inspection, measuring and test equipment
  • Process and production control
  • Receiving Inspection and test
  • In - Process Inspection and test
  • Final Inspection and test

All these internal quality control tests are properly documented and saved.   

In - Process Inspection and test

Before the commencement of manufacturing, entire data related to quality is by our quality assurance department. Also, pre-manufacture samples are tested by technicians on following parameters:

  • Surface finish
  • Dimensional accuracy of the samples
  • Data from extrusion and injection moulding machines
  • Process control

Process data recording and ultrasonic measurement in the segment of extrusion are the part of process control. Ultrasonic automatically measures & reports the deviations in the tolerance factor. This report is send to the cutting device of extrusion machine. This ensures that that the sizing plant automatically isolates the substandard product. Hence, only the high quality products are packed and stacked.

Final Inspection and Test

All the finalized products are inspected and tested by following time laps test procedures. Also, the results are properly documented. These tests determine the weakness of the production stage. Following the final inspections and tests carried out:

  • Dimensional control
  • Surface finish
  • Measurement of the melt flow index
  • Impact bending test
  • Heat reversion test
  • Homogeneity of the material
  • Behavior under long period stressing
  • External Control    
It comprises tests of pre-determined scope, at fixed intervals. The external control consists of product's tests and following:
  • Internal audit of Nagory quality assurance system and test procedures
  • Calibration of the test equipment
  • Hygienic and toxology tests     
  • Storage / Packing / Dispatch
The products passed through quality control are stored in a well-managed warehouse. The 'internal instructions' are responsible for controlling these stages of the product.


We manufacture a range of piping systems by using the processes of extrusion and injection moulding. This has assisted us in becoming the market leader in developing polypropylene supply systems. To meet our production targets, we have two factories, one at Jalandhar and second at Baddi, both in India. The two factories are designed and developed as per the industry guidelines, along with ensuring that these conform to the environment protection policy.

All our piping systems and their manufacturing processes are environment friendly. During the manufacturing process, we make sure that there are no types of pollutants developed as a by-product. Even if there are some by-products, then we ascertain that these are properly treated so that they do not harm the environment.

In addition, we also use environmentally friendly materials in the production process. To ensure their environmental compatibility, all the additives (colour pigments & stabilizers) present in it are duly tested in our own laboratory as well as in prestigious independent laboratories. Some of the important ecological advantages of our products are:

  • PVC free
  • The additive share of Nagory product is below 3%
  • Free from heavy metals that are hazardous to health (e.g. Cu, pb, N)
  • Longevity
  • Recyclable

Why Us?

There are various factors, which keeps us ahead of our competitors in the global arena. Some of these are as follows:

  • Remain conscious of customers' changing requirements
  • Applying teamwork to realize our vision
  • Achieve targets on time and completely
  • Never accept inferior quality in products, work, material or equipments.

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