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|  MIL-D-52923B(ME)
Welds shall transmit stress without permanent deformation or failure when the parts connected by
the welds are subjected to proof and service loading. Parent materials, weld filler metals, and
fabrication techniques shall be as required to enable the distributor to conform to the examination
and test requirements specified in section 4. Parts to be joined by fillet welds shall be brought into
as close contact as possible, and in no event shall be separated by more than 3/16 inch, unless
appropriate bridging techniques are used. The welding process used in fabrication of the
distributor shall be at the option of the contractor.
3.20.1.1 Welders. Before assigning any welder to manual welding work covered by this
specification, the contractor shall obtain certification that the welder has passed qualification tests
as prescribed by one of the following listed codes or the manufacturer's commercial code, for the
type of welding operations to be performed and that such qualification is effective as defined by
the particular code:
AWS D1.1 - Structural Welding Code, Welding Qualifications, Sections 5 and 6.
ASME - Welding Qualifications of Section IX.
AWS/ANSI D14.3 - Earthmoving and Construction Equipment Welding, Qualification,
Section 5.
Certification shall be made available for review by the contracting officer or designated
representative. Contractors who only make horizontal welds need not qualify welders for "all
position welding". Subject to approval by the Government, the contractor's standard welder
qualification may be substituted in lieu of the above codes provided that the contractor's
procedure is equivalent to the above codes. The contractor shall be responsible for determining
that automatic welding equipment operators are capable of producing quality welds in accordance
with AWS and ASME codes.
3.20.1.2 Weld quality.
a. The contractor shall be responsible for determining the inspections needed to insure
that, when the welded parts are assembled together to make the distributor, the
distributor shall conform to the inspection requirements specified in section 4.
b. All weldments shall be free of slag, flux, weld spatter, and other impurities detrimental
to either the appearance or strength of the weldment.
c. Undercut in weldments shall be held to a minimum and shall not be more than
1/32 inch deep.
3.20.1.3 Welding practices.
a. Preheat of materials being welded and maximum interpass temperature during welding
shall be in accordance with the contractor's recommendations
b. Tack welds shall be subject to the same quality requirements as final welds.
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