Our ductile iron blade is of professional quality. It's for the contractor tired of dealing with an inferior product.The ductile iron blade is the diamond blade that started the revolution. Before the  ductile iron blade  was introduced a few years ago,  pipe cutting was better left to abrasives. With our unique segment mixed specifically for the pipe and the electroplated diamond dust in a swirl pattern on the blank of the blade creating a debarring action, the ductile iron blade does the job. When you hold this blade in your hands you will realize the difference right away. The ductile iron blade is perfect  ductile iron, schedule 40 carbon steel, culvert pipe, concrete pipe, commercial grade PVC & cured concrete.