Carbon Vessels Large Jacketed Carbon Tank Being Prepared for Transportation Carbon Vessel After Final Coat of Paint Carbon Vessel Ready to Transport Fabrication Associates has manufactured many different shapes and sizes of carbon tanks over the years. From high pressure to full vacuum they have been coated, lined, and electroplated. We have manufactured round and square, tall and short pressure vessels. The custom tanks that Fabrication Associates has produced are just that ... custom tanks built to your requirements, to satisfy your needs, and to work in your application.