Copper Straight Pipe for Air-Conditioner, Refrigeration, Water, Gas,Heat-Exchanger,Oil. 1.Copper Straight Pipe for Air-Condtioner, Refrigeration, Water, Gas, Heat-Exchangers, Oil, Construction.2.Outside diameter: 1/4"-4 1/8"3. Length: 5.8m, 6m, 19ft, 20ft.4. Temper: Hard, Half Hard, Soft.5. Package: Iron Frame