Class Codes & Rates:

SCOPE  Code 3081 is applied to foundries engaged in the manufacture of cast iron or malleable iron for outside customers. The classification includes wood or metal pattern making, core and mold making, the melting of pig iron and certain percentages of cast iron scrap in furnaces and the pouring of the molten metal into molds to produce either gray or white iron. Some foundries may put white iron castings through an annealing process in an air furnace which melts the charge. This melted metal is cast to produce malleable iron. Cooled gray, white or malleable castings generally receive some machining to remove burrs or imperfections. The finished castings are then inspected, packed and shipped. Code 3081 is also applied to soil pipe foundries using the pit method wherein stationary molds or flasks are used to cast the pipe.