It is extremely important for a metalworking knife to be out of a correct mateiral and made with correct hardness. Before we submit a quote or initiate production, we always make sure of cutting or shearing details like metals to be sheared, shearing thickness, working frequency etc. We are capable of makingCNC guillotine shear knife of 7 meters or 23 feet long in a continuous length. We also bolt carbide edge onto a straight shear blade to prolong its working life while it stays at a very cost effective level. Currently we ship guillotine shear knives mainly to the Unites States, Turkey, Indonesia, Japanese and Korean companies here in China and they are repeating orders.