304 304L heat exchanger tube sheets condenser tube sheets

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A tubesheet is a perforated plate component used to support and fix heat exchange tubes as well as to separate the media, and it belongs to the accessories in the field of mechanical manufacturing. By drilling holes in circular steel plates and welding in fixed tubes, it is widely used in equipment such as shell-and-tube heat exchangers, boilers, and pressure vessels. The material of the tube sheet is selected based on the operating conditions, with options including Q345R carbon steel, stainless steel, or titanium alloys. The requirements for processing precision include tolerances regarding the spacing between tube holes, as well as requirements for perpendicularity and surface finish. Large tube sheets are typically processed using CNC drilling machines or machining centers. This component is susceptible to electrochemical corrosion, chemical corrosion, and bimetallic corrosion; protective measures include sandblasting, **cleaning, and coating with polymer composite materials.