Sandvik 2RE69 ("25.22.2") high-alloy stainless steel is developed specifically for the urea production process. The growing Tube, pipe, fittings and flanges.
and Pitting Resistance Equivalent Number. (PREN) of . 18.4 Pipe and Tube Welding . Pulp and paper mills use stainless steel to avoid iron contamination of.
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