标准摘要
[中文适用范围]： 规定了测定圆形横截面热塑性管道的抗外部冲击能力的方法（阶梯法）。 适用于在 0 ℃下测试的隔离批次管道。 [外文原描述]： Specifies a method for determining the resistance to external blows of thermoplastic pipes of circular cross-section (staircase method). Applicable to isolated batches of pipe to be tested at 0 °C.
英文名称Thermoplastics pipes — Determination of resistance to external blows — Staircase method