copper coil heat exchanger widely used in refrigeration industry High quality,Reasonable price. copper coil heat exchangerSuitable for R134A, R22, R404A, ... 52mm,etc ,inner grooved or smooth tube5.side plate: galvanized plate or aluminum plate6.size: from1/6HP to 20HP8 ... expanding, digressing, dryingWelding, leakage test, bending, inspection, packingNote: for further information please contact us.