Tube OD 25mm~219mm Tube Thickness 0~16mm Fin Height 8mm~30mm Fin Thickness 0.8mm~3.0mm Fin Pitch 3.2mm~30mm Tube OD 25mm~219mmTube Thickness 0~16mmFin Height 8mm~30mmFin Thickness 0.8mm~3.0mmFin Pitch 3.2mm~30mmTube Length 0~32meterBase Tube Material"Carbon,Alloy,Stainless and Corrosion-resistance Steel