cast iron casting 1.machine screw size,M3-M36 2.carbon, stainless steel ... plated,black,etc 4.flat,pan, etc. cast iron casting of carbon steel material 1.Surface Finish: annealing, natural anodization, heat treatment ... smile to each customer1)Details: Product name cast iron casting of carbon steel material Material1.Stainless Steel: SS201, SS303, SS304, SS316, SS416 ...