570	METALS: BARS, PLATES, RODS, SHEETS, STRIPS, STRUCTURAL SHAPES, TUBING, AND FABRICATED ITEMS
57003  *	Alloy Metal: Angles, Sheets, etc.
57005  *	Aluminum: Bars, Plates, Posts, Rods, Sheets, Siding, Strips, Structural  Shapes, Tubes, etc.
57006  *	Aluminum Ingots
57009  *	Brass and Bronze: Bars, Plates, Rods, Sheets, Strips, etc.
57011  *	Brass Ingots
57013  *	Bushing Stock, Brass and Bronze
57018  *	Copper: Bars, Plates, Rods, Sheets, Strips, etc.
57019  *	Cutting Rod
57021  *	Decking, Steel
57023  *	Expanded Metal (Not Stainless)
57024  *	Expanded Metal, Stainless
57025  *	Forms, Metal (For Concrete Curbs, Columns, and Gutters)
57028  *	Guard Rails and Accessories: Bolts, Posts, Terminal Ends, Washers, etc.
57029  *	Iron: Angles, Bands, Plate, Sheets, etc.
57031  *	Lead: Bulk, Granulated, Strips, etc. (Not Plumbing or Paint)
57032  *	Keystock, All Sizes
57033  *	License Plate Blanks
57034  *	License Plates Complete (Purchased Through Bid Process)
57035  *	Magnesium Alloy: Bars, Plates, Rods, Sheets, Strips, etc.
57037  *	Magnesium Alloy Ingots
57040  *	Ornamental Ironwork
57042  *	Pig Iron Ingots
57044  *	Posts, Steel (For Delineator Markers, Mile Markers, etc.)
57046  *	Post-Tensioned Type Reinforcing System (For Concrete Slabs)
57048  *	Rails, Railroad, Steel
57050  *	Scrap Metals, All Kinds
57052  *	Shafting: Bronze, Monel, Stainless Steel, Steel, etc.
57054  *	Sheet Metal, Fabricated (Custom-Made Sheet Metal Items)
57056  *	Sheet Piling, Steel
57057  *	Shim Stock, Steel
57062  *	Spring Steel
57064  *	Stainless Steel: Bars, Plates, Rods, Sheets, Strips, Tubes, etc.
57065  *	Steel Bridge Truss, Overhead
57066  *	Steel, Cold Rolled: Bars, Plates, Rods, Sheets, and Strips
57068  *	Steel, Fabricated: Beams, Gabions, Gratings, Walkways, Window Bars, and Custom-Made Steel Items 
57070  *	Steel, Galvanized: Bars, Pipes (Not Plumbing), Plates, Rods, Sheets,  Strips, etc.
57072  *	Steel, Mild: Bars, Plates, Rods, Sheets, Strips, Tubes, etc.
57076  *	Steel, Reinforcing, Bars and Rods
57077  *	Steel, Reinforcing, Mesh
57078  *	Steel, Reinforcing, Fabricated
57079  *	Steel Siding
57080  *	Steel Sheets, High Carbon (For License Plates, etc.)
57081  *	Steel Studs, Dry Wall
57082  *	Steel Wire Panels (For Partitions, Window Guards, etc.)
57084  *	Structural Shapes, Steel: Angles, Channels, I-Beams, etc.
57085  *	Tin
57087  *	Tool Steel: Bars, Drill Rod, Flat Stock, etc.
57090  *	Tubing, Mechanical, Steel: Rectangular, Round, Square, etc.
57095  *	Zinc: Anodes, Sheets, etc.