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Open the Piping Specification.xls workbook.
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Select the CorrosionAllowance sheet.
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Select a row after the Start keyword but before the End keyword, and click Insert > Row.
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In the Spec Name column, type the name of the piping materials class.
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In the Materials Category column, enter the materials code for which you are defining corrosion allowance.
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In the Fluid Code column, enter the fluid code for which you are defining corrosion allowance.
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In the Corrosion Allowance column, specify the corrosion allowance for the specified material and fluid codes. Be sure to include the units of measurement, in or mm, when specifying this value.
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Save the Piping Specification.xls workbook.
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The piping materials class must be defined on the PipingMaterialsClassData sheet.
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Valid material codes are defined in the AllCodeLists.xls workbook on the MaterialGrade sheet in the Codelist Number column.