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Open the Piping.xls workbook.
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Select the WeldGapRule sheet.
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Select a row after the Start keyword but before the End keyword, and click Insert > Rows.
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In the Spec Name column, type the name of your piping materials class.
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In the Weld Type column, type the weld type code.
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Define the NPD range for the weld gap.
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In the Weld Gap column, type the gap between the welded ends of the welded joint. Be sure to include the units when defining this value, for example, 3mm.
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Save the Piping.xls workbook.
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The piping materials class must be defined on the PipingMaterialsClassData sheet.
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Valid weld type codes are listed in the AllCodeLists.xls workbook on the WeldType sheet in the Codelist Number column.