1. ACR Copper Pipe For Air-Conditioner, Refrigeration. 2. Temper of ACR Copper Pipe: 5m-6m/pcs. 1. ACR Copper Pipe For Air-Conditioner, Refrigeration.2. Outside Diameter: 1/4"-41/8"3. Length:5m,5.8m,6m.4. Temper: Hard, Half Hard, Soft5. Standard: ASTM B280, JIS H3300, EN12735.6. Package: 2-20 PCS/Bundles. ACR Copper Pipe