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403.4.3 Copper and Copper Alloy
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Copper and copper alloy pipe shall not be used if the gas contains more than an average of 0.3 grains of hydrogen sulfide per 100 standard cubic feet of gas (0.7 milligrams per 100 liters). Threaded copper, copper alloy and aluminum-alloy pipe shall not be used with gases corrosive to such materials.
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403.4.3 Gas Piping Installations, Copper and Copper Alloy
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2014 FBC - Mechanical, 5th edition > 12 Hydronic Piping > 1203 Joints and Connections > 1203.7 Copper or Copper-Alloy Pipe
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Joints between copper or copper-alloy pipe or fittings shall be brazed, mechanical, soldered, threaded or welded joints conforming to Section 1203.3 ...
2020 FBC - Mechanical, 7th edition > 12 Hydronic Piping > 1203 Joints and Connections > 1203.7 Copper or Copper-Alloy Pipe