29304-15 GTAW - Carbon Steel Pipe

Front

Even when other welding processes are primarily used for a pipe weld, GTAW is often used to make the _____

Back

root pass

Front

Oxygen sources must be kept away from _____.

Back

petroleum products

Front

According to typical ASME, API, and AWS pipe bevel specifications, the root face should be no more than

Back

1/8" (3 mm)

Front

The generally preferred power type and polarity for GTAW is _____

Back

DCEN

Front

For welding in the 1G-ROTATED, 2G, and 5G positions, the pipe axis can vary from the basic position by as much as _____?

Back

15 degrees

Front

Carbon steel pipe welds made with GTAW normally require a 15- to 20-degree _____?

Back

push angle

Front

A technique used to prevent contamination of the electrode when feeding the filler rod into the weld puddle is to _____.

Back

move the torch toward the back edge of the puddle

Front

When using GTAW on carbon steel pipe in the 1G-ROTATED position, run all passes at or near a point _____?

Back

at the top of the pipe as it rotates

Front

When using GTAW for open-root V-groove welds on carbon steel pipe in the 2G position, what can you do to prevent the weld puddle from sagging?

Back

Drop the torch work angle slightly, but not more than 10 degrees.

Front

When using GTAW for open-root V-groove welds on carbon steel pipe in the 5G position, start at a tack weld positioned at the _____?

Back

bottom of the pipe and weld uphill