The expansion of INFRAPIPE into twinwall pipe manufacture has concluded with the commissioning of a second line in Palmerston North, capable of manufacturing 6m pipes in ID sizes 300,375, 450, 525, 600, 800 & 1000 in SN ratings of 6, 8 & 16. The range has been designed to be seamlessly compatible with the KRAH offering so for complex and sizable jobs, the twinwall can be used for long, simple runs and the Krah for the complex or high strength applications.