Titanium Heating Coil, Titanium Cooling Coil. Heating and cooling coils are manufacture from mill products as per astm standard with leak and pressure tested. normally coils are made from â½"dia - 2 â½"dia pipe or tube as per astm b 337338, gr.1 or 2 applicable to chemical, electroplating and metal finishing industries to heat or cool the chemical bath. we also manufacture special sizes and shape superfine 'u' coils. We are manufacturing the heating & cooling coil out of titanium, tantalum and nickel mill products as per customer deign, drawing and specifications.