AIA NAS959 PDF

Purpose

This specification provides a standard for the manufacture, performance, inspection, reliability and procurement of a series of manual gas metal arc welding equipment. This standard lists minimum reqüirements and is not to limit design advances.

Classification

The machine shall be of the following types, sizes and classes.

Type

I DC Constant Potential

II DC Constant Current

III DC Short Circuiting Arc

IV DC Pulsed Power

Size

All equipment shall be rated according to maximum current and to current at 100% (continuous) and 60% duty cycles in addition to the following noted dimensions.

Power Source - current

Welding gun - Current at continuous duty

Filler Metal Feeder - in inches per minute and diameter of hard and soft filler wire.

Class

Commercial Hardware - stock item

Modified Commercial Hardware

Custom Hardware