The stringent specifications followed by Interplast during production are certified in its labs with tests specified by European standard ÅÍ 1329 and Greek standards ÅLÏÔ 686 Â and ÅLÏÔ 686 Á. The factory distributes only certified pipes that have been tested in the following ways:

• Checking of Raw Material flow.
• Visual inspection of pipe surface, measurement of outer diameter and measurement of wall thickness by use of certified instruments.
• Checking of pipe average weight.
• Dichloromethane solution test.
• Watertightness testing of pipes and fittings.
• Impact test on pipes and fittings.
• Axial shrinkage test.