Glossary |
Boiler and boiler tube industry terms and their definitions.
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| Wall | "Wall Thickness or Gage. Specified in either fractions or decimals of an inch or by a """"wire gage"""" number. In the United States, the most common gage used for tubing is the """"Birmingham """" iron wire gage, designated """"B.W.G.""""." |
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| Wall - Average | Average Wall- A tube whose wall thickness is permitted to range over and under the specified nominal wall measurement within certain defined tolerances. |
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| Wall - Maximum or Minimum | Maximum and Minimum- The dimensions resulting after applying the proper tolerances to the nominal dimensions. |
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| Wall - Minimum | "Minimum Wall- Generally, the lightest wall permitted within specified tolerances. A """"minimum wall tube"""" is one whose wall thickness is not permitted to fall below the specified nominal measurement." |
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| Wall - Nominal | "Nominal- The theoretical or stated value of the O.D., I.D., or wall dimension as specified by the customer." |
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| Work Hardening | Hardness developed in metal as a result of cold working. See cold working. |
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