granco clark, a global leader in the aluminum extrusion industry building a full range of aluminum extrusion equipment including some of the world’s largest aluminum extrusion systems. granco clark produces all required equipment to heat, cool, pull, stretch, cut, stack, age, and store aluminum extrusions. leading in the optimization of extrusion technologies and processes, our automated equipment is designed, fully assembled and shop tested to the specific requirements of your extrusion process to deliver exceptional efficiency, productivity and longevity.