There are not many choices for materials of construction that are suitable for running reactions containing 5% hydrochloric acid at 140 to 160 °C. Running the reaction in a glass reactor or a glass-lined reactor would be the obvious choices. If a metallic alloy is preferred, the only one I can think of that would work is tantalum. The corrosion resistance of tantalum is very similar to glass. Unfortunately, tantalum is very expensive. I am sorry but it is our policy not to make recommendations regarding specific suppliers or manufacturers of equipment. If you don't know where to start, an Internet search should get you some answers pretty quickly.