Exam 23: Pipe Welding Symbols

Special symbols have been developed to indicate the methods to be used for connecting the components of a pipe ____.

Pipe layouts are shown through the use of single-line and double-line drawings.

In the case of complex layouts in double-line drawings, the pipe size must be more than 12".

Single-line drawings are always used to show pipe layouts for nominal pipe sizes of less than 12". This is a standard practice for all companies.

Pipe ____________________ are drawings use special sets of symbols to identify the components of piping systems, including pipe, valves, fittings, flanges, and equipment.

When pipe and fittings are to be butt welded, the ends are ____.

Double-line drawings may include use of the ____ welding symbols to indicate the kinds of welds required for assembling the components of the pipe layout.

____ dimensions are applied to the centerlines of the pipe and fittings to serve as reference points for locating items in the layout.

Simple fittings, such as elbows and tees, are ____ represented.

The runs of pipe on a pipe layout are shown without any indication of pipe sizes.

Reference to special charts for symbol interpretation are necessary when fabricating pipe layouts that use ____ symbols.

A pipe layout can be represented by any number of ____________________ views, by an oblique view, or by an isometric view.

Dimensions are usually expressed in ____ when they measure more than one foot.

Single-line drawings are generally used to show pipe layouts for nominal pipe sizes of less than ____ inches.

A(n) ____________________ pipe layout may specify several methods of connecting the pipe and fittings.

A ____ pipe layout may specify several methods of connecting the pipe and fittings.

Double-line drawings are used for pipe layouts that use large sizes of pipe and fittings ____________________ inches and over.

Dimensioning for pipe layout components is accomplished by the addition of ____________________ and notes to the drawings.

For joints that are socket welded, the ends are ____.

A number of companies have developed their own sets of symbols, both for single-line and double-line drawings.