Answer :
Final answer:
The correct standards for this type of steel tubing are ASTM D2513 for electric resistance-welded coiled steel tubing, and ASTM B819 for copper brazed steel tubing.
Explanation:
The correct standards for steel tubing in this case would be ASTM D2513, which is the standard specification for Electric Resistance-Welded coiled steel tubing for gas and fuel oil lines, and ASTM B819, which is the standard specification for copper brazed steel tubing. These specifications, developed by the American Society for Testing and Materials (ASTM), set the standards of quality and safety that these materials must adhere to.
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