ASTM A249 TP304 Stainless Steel Welded Tube Bright Annealed Tube Heat Exchanger Tubing ASTM A249 TP304 stainless steel welded tube is a welded austenitic stainless steel tube made according to ASTM A249/A249M, using TP304 stainless steel. It is produced by roll-forming stainless steel strip into a tubular shape and welding the longitudinal seam. The tube is normally annealed, pickled/passivated, sized, straightened, and tested. It is designed mainly for use in heat exchangers
It's genuine 321H — titanium-stabilized, so no worries about sensitization or intergranular corrosion during welding. Our welder said it welded nicely with no cracking.
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