A-A-51448A
The six table legs shall each be fitted with a swivel-type, 3 inch minimum diameter, 3/4 inch minimum width, electrically conductive caster. Two outer casters on the long axis of the table shall have a brake. Each caster shall have a nominal load rating of 75 pounds.
The table top shall be made of corrosion-resisting steel 0.0625 inch thick (No. 16 United States Standard Gage). All edges of the top shall be flanged downward approximately 1-1/8 inch and hemmed approximately 3/8 inch. The top shall be continuously welded at all vertical contact points with the uprights the full distance of the turndown. As an alternate, the table top may be fabricated of corrosion-resisting steel a minimum of 0.035 inch thick (No.20 United States Standard Gage), if supported by a reinforcing framework of 1 inch wide by 0.079 inch thick (no. 14 U.S.S. Gage) corrosion-resisting steel as shown in figure 1. In lieu of the reinforcing framework a carbon steel subtop, a minimum of 0.0475 inch thick (No. 18 U.S.S. Gage), having the underside coated with an acrylic enamel finish, may be attached to the corrosion-resisting steel top by means of studs.
The table shall have an adjustable curtain rail constructed from a 1/2 inch diameter solid corrosion-resisting steel rod. The rail shall be adjustable to a height of 12 inches above the table top.
The table shall be of welded construction throughout. The welding rods shall be corrosion-resisting steel similar in composition to the welded members. The surfaces to be welded shall be free from grease, oil, oxides or other foreign matter. All weld joints shall blend into the adjacent metal in gradual, smooth curves. Beads shall be smooth and free of slag or excessive spatter. Sufficient metal shall be added to provide a suitable fillet or reinforcement. All welds shall be continuous with no visible voids, pin holes, or cracks.
All exposed corners and edges shall be broken, rounded, or otherwise treated to eliminate sharp edges. All exposed corrosion-resisting steel surfaces shall be free from pit marks, weld seams, scale, and shall have a No 4 commercial finish. The finish shall be uniform and free of coarse grind marks and scratched areas.
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