For pressure vessels and reaction vessels in M.S, S.S etc, we employ the latest techniques for expanding tube ends into tube sheets. High pressure tests are always carried out on these heat exchangers before they leave the factory. We fabricate āUā Tube heat exchangers as well. Fabrication of U-Tubes for Heat-Exchangers Spans at extremely Short Delivery time. Tubes to any specification and any length can be supplied in extremely short time. Special care is taken for ovality and thinning at the bent portion, during fabrication.