... zinc plated,black,etc 4.flat,pan, etc. cast iron casting of carbon steel material 1.Surface Finish: annealing, natural ... , gold passivation, galvanizing, satin, etc.2.Processing Method: cnc machining, turning, milling, drilling, grinding, broaching, welding and assembly.3 ... been in constant pursuit continous progress.6.We commit ourself to smile to each customer1)Details: Product name cast iron casting ...