英语翻译

问题描述:

英语翻译
如果在管子里不装砂子、也不加热,把管子放在弯头台上不用锭心轴冷弯管子时,管子最小的弯曲半径不应小于它直径的4倍.
PS:“锭心轴冷弯管子”这里不明白

if unfilled with sand and unheated,the minimal bending radius of the pipe should be no less than the 4-times diameter of the pipe when the spindle cold rolled pipe was not in use to the pipe on the be...