The laboratory measures: outside diameter, Ovality, thickness of curtain and continuous monitoring of physical surfaces of pipe during production.

This test is done in order to monitor reaction of pipes against stable hydrostatic pressures in a stable temperature. Every inflection indicates deficiency in pipes like: disruption, and any leakage.

In the test high pressure implement on the pipes, so that in 60 to 70 seconds will be burst. The type of disruption shows indicators like: quality of row materials, proper extruder temperatures and proper cooling of pipes after production, Best type of disruption in the test is timidity and distortion in canary beak.

In the test, a sample the pipes in particular length is heated in a period of time in a standard way. Difference between length before and after heating are calculated as percentage of variation of length based on primary length. The maximum variation is up to 3%.

In the test resistance of row/ primary materials against demolition because of oxidation with O2 is measured. The oxidation process should take more than 20 minutes time.