This specification prescribes the requirements for standard sizes and packages of all types of welding filler metals,
allowing these physical attributes to be incorporated by reference into the individual specification. The annex lists the
manner by which the filler metal specification may refer to appropriate requirements in this specification.
This specification makes use of both U.S. Customary Units and the International System of Units (SI). Since these are
not equivalent, each system must be used independently of the other.
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