Soldering

corrosion shall be entirely eliminated. Bolts and screws may be welded by

any accepted process that will minimize the possibility of carbide

precipitation. Welds in galvanized steel made after galvanizing, and the

adjacent areas where galvanizing is damaged shall be thoroughly cleaned and

coated with a polyurethane coating.

2.2.2

Soldering

Use tin-lead soft solder with 50 percent tin, except that solder which will

be in contact with potable water, ice, or food products shall be lead-free.

2.2.2.1

Soldering Stainless Steel

Clean stainless steel of discoloration and then apply a suitable soldering

flux. After soldering has been completed, wash away excess and remaining

flux and clean the soldered joint and adjacent metallic surfaces with a

liquid alkaline or neutralizing reagent, to prevent any attack on the

surrounding metallic surfaces by the soldering flux.

2.2.2.2

Soldered Joints

Use only as filler to prevent leakage and for no other purpose.

2.2.3

Brazing

Use only to join copper tubing to brass and bronze connection fittings.

Accomplish with silver solder. Do not use in lieu of a welding operation.

2.2.4

Chromium Plating

Apply chromium plating over nickel plating.

2.2.5

Butt and Contact Joints, Bends, and Edges

Butt joints and contact joints shall be close fitting. Brake bends shall

be free of open-texture or orange peel appearance. Sheared edges shall be

free of burrs, projections, and fins. Miters or bullnosed corners shall be

neatly finished, with the under edge of the material ground to a uniform

condition, and without overlapping material and cracks.

2.2.6

Bolts, Screws, and Rivets

Wherever possible, exposed surfaces shall be free of bolts, screws, and

rivet heads. Wherever bolts or screws are used, use stainless steel

concealed type. On exposed, exterior surfaces, use stainless steel rivet

heads where conditions do not permit the use of concealed fasteners. Where

threads of bolts and screws occur on the inside of fixtures, either visible

or exposed, cap with lock washer and chromium-plated brass or bronze acorn

nut. Where bolts or screws are welded to underside of trim or tops,

reverse side of weld shall be finished and undepressed.

2.2.7

Legs

Install counter-supported food service equipment on 100 mm 4 inch high

stainless steel legs of round stock, able to support the equipment when

filled.

SECTION 11400N

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