Stainless Steel: AISI Type 304. Provide non-magnetic sheets, free of buckles, waves, and surface imperfections. Provide No. 4 polished finish for any surfaces exposed. Provide self-adhesive protective paper covering on polished surfaces of stainless steel sheet work, and retain/maintain until time of final testing, cleaning, start-up, and Final Acceptance. Galvanized Steel Sheet: ASTM A 526, except ASTM A 527 for extensive forming; ASTM A 525, G90 zinc coating, chemical treatment. Steel Sheet: ASTM A 569 hot-rolled carbon steel. Stainless Steel Tube: ASTM A 554, Type 304 with No. 4 polished finish. Aluminum: ASTM B 209 sheet and plate, ASTM B 221 extrusions, 0.40-mill clear anodized finish where exposed, unless otherwise indicated. White Metal: Corrosion-resistant metal containing min. 21% nickel. Make casting free from pit marks, runs, checks, burrs, and other imperfections; rough grind, polish and buff to bright luster. In lieu of white metal castings, 18-8 stainless steel die-cast or stamped may be used. Plastic Laminate: NEMA LD3, general purpose high-pressure type, 0.05" thick except 0.042" for post-forming, smooth texture and white unless otherwise indicated. Comply with NSF 35. Plastic Materials and Components: Except for plastic laminate, provide plastic materials and components complying with NSF 51. Hardwood Work Surfaces: Laminated edge-grained hard maple (Acer saccharum), NHLA First Grade with knots, holes and other blemishes culled out, kiln dried at max. 8% moisture, waterproof glue, machined, sanded, and finished with NSF-approved oil-sealer. Sound Deadening: Heavy-bodied resinous coating, filled with granulated cork or other resilient material, compounded for permanent, non-flaking adhesion to metal in ⅛” thick coating. Apply coating of sound deadening material to underside of tops, drainboards, dishtables, and sinks.
