Inner grooved copper tube improves the efficiency of heating-exchange. It's widely applied in HVAC industries. We produce inner grooved tubes strictly to ASTM B 68, EN 12735, JIS H3300 standards.

The external surface of inner grooved copper tube (coiled) is glossy and its inner surface is with numbers of regular screw threads. Its thermal conductivity is higher than plain copper pipe by 30% to 40%, because of the increased internal surface.

As the energy crisis and admittance system about energy efficiency ratio in air-conditioning industry, Inner grooved copper tube(coiled) will be widely used in this. Outside diameter, thickness and tolerance of inner grooved copper tube (coiled)