Tubesheet for Heat Exchanger

Walmi is a manufacturer of tube sheet, baffle and flanges for boiler, heat exchanger, pressure vessel, super heater.  They are often made from a round, flattened forged disc with a few or thousands of drilling holes, the diameter of the holes are same with the outside diameter of the tubes which will be inserted into the tubesheet. The tube-hole pattern or pitch are relative to each other stainless steel tubesheet within the shell and change tubes distance, angle and flow direction to provide max turbulence and tube surface contact for maximum heat transfer effectiveness.