... , 5.8m, 6m, 20ft Standard: ASTM, JIS, EN, BS, AS, NZS compact strcture and brightness of inner and outer surface1 ... surface, homogeneous and compact structure, high dimensional precision, high heat-exhange efficiency, easy welding, corrosion resistance, easy to use ... √ √ √ √ √ √ √ √ √ √≥14.00 √ √ √ √ √ √ √ √ √ √≥15.88 √ √ √ √ √ √ √ √ √≥19.05 √√ √ √ √ √ √ √22.22 √√ √√ √√ Plain Copper Pipe for HVAC