Pipe Notch Milling Machine

QT-NMM Pipe Notch Milling Machine is used to determine resistance to the slow crack expansion. It is widely used in pipe manufacturing, water supply and drainage projects or Industrial field.

ISO 13479:1997 Polyolefin pipes for the conveyance of fluids -- Determination of resistance to crack propagation -- Test method for slow crack growth on notched pipes (notch test).  This International Standard specifies a method of test for determining the resistance to slow crack growth of polyolefin pipes, expressed in terms of time to failure in a hydrostatic pressure test on a pipe with machined longitudinal notches in the outside surface. The test is applicable to pipes of wall thickness greater than 5 mm.