外径＞10厘米,其他管状铝合金(在293K(20摄氏度)时的极限抗拉强度能达到460兆帕(0.46×10^9牛顿／平方米)或更大)

Other tubes and pipes of aluminum alloy, tensile strength reaches 460 mega-P (0.46*109Newton/ m2) or more at 293K (20 degree centigrade), of an outside diameter more than 10cm