In stainless steel tubing, which joining method is NOT allowed?

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Multiple Choice

In stainless steel tubing, which joining method is NOT allowed?

Explanation:
In medical gas piping, joints must be leak-tight, corrosion-resistant, and able to withstand cleaning and sterilization. Soldering uses a low-melting-point filler and does not fuse the base stainless steel, producing a weaker, capillary joint that can fail under pressure and leave flux residues. Such joints typically cannot meet the stringent leak-test and purity requirements of high-precision gas systems, so soldering is not allowed for stainless steel tubing in this setting. Welding and brazing methods, like TIG (GTAW) and MIG (GMAW), create true, continuous joints that meet the necessary strength and leak integrity when performed to code.

In medical gas piping, joints must be leak-tight, corrosion-resistant, and able to withstand cleaning and sterilization. Soldering uses a low-melting-point filler and does not fuse the base stainless steel, producing a weaker, capillary joint that can fail under pressure and leave flux residues. Such joints typically cannot meet the stringent leak-test and purity requirements of high-precision gas systems, so soldering is not allowed for stainless steel tubing in this setting. Welding and brazing methods, like TIG (GTAW) and MIG (GMAW), create true, continuous joints that meet the necessary strength and leak integrity when performed to code.

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