The most commonly used guide shows the basics of proper pipe identification
based on ASME / ANSI A13.1 code standards for pipe marking. These are the standards that apply to most facilities.
The
other pipe marking guide is a specialized guide to labeling
ammonia pipes in refrigeration and cooling systems. This guide shows the IIAR
standards for pipemarking. These are the standards that should be
used for any ammonia piping system.
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