空調(diào)與制冷設(shè)備用無縫銅管GB/T17791-2007電纜用無縫銅管GB/T19849-2005導(dǎo)電用無縫圓形銅管GB/T19850-2005磁控管用無氧銅管GB/T20301-2006無縫內(nèi)螺紋銅管GB/T20928-2007,紫銅就是純銅：純銅呈紫紅色，又稱紫銅。純銅密度為8.96，熔點(diǎn)為1083℃，紫銅管的質(zhì)量計(jì)算如下：G=8.96πδ（D-δ）/1000G：質(zhì)量kgδ：管壁厚mmD：管直徑mm適宜制造紫銅管銅材的牌號為T1、T2。T1T2T1的化學(xué)成份Cu+Ag99.95%，P0.001%，Bi0.001%，Sb0.002%，As0.002%，F(xiàn)e0.005%，Ni0.002%，Pb0.003%,Sn0.002%,S0.005%，Zn0.005%，O0.02%。
T2的化學(xué)成份Cu+Ag99.95%，Bi0.001%，Sb0.002%，As0.002%，F(xiàn)e0.005%，Pb0.005%,S0.005%。導(dǎo)熱率（λ）384/W·(m·K)-1比熱熔（C)0.394/kj·(kg·K)-1紫銅管標(biāo)稱直徑（mm）8,10,15,20,25，32,40，50,65,80,100,125,150，in1/43/81/25/83/4111/411/2221/2331/9.52,12.7,15.88,19.05,22.22,28.58,34.92,41.28,53.98,66.68,79.38,92.08,104.78,130.18,155.58K級0.89,1.24,1.24,1.24,1.65,1.65,1.65,1.83,2.11,2.41,2.77,3.05,3.40,4.06,4.78壁厚（mm）L級0.76,0.89,1.02,1.07,1.14,0.64,0.71,0.81,0.89,1.07,1.24,1.47,1.65,1.83,2.11,2.41,2.77,3.10紫銅管與一般的塑料管相比較，可以發(fā)現(xiàn)塑料管的主要材料中含有增塑劑等化學(xué)添加成分，容易隨時(shí)間與溫度的變化而引起逸出或塑料的硬化和脆化現(xiàn)象。