drop weight tear test

基本解释

What variation rule of impact toughness and drop weight tear test with temperature were displayed. The high toughness of pipedesign steel could meet the requirement of pipe steel.
给出了冲击韧性和落锤撕裂性能随温度变化的规律，这种管线钢能够满足管线设计的需要。
The method and standard of drop weight tear test were described. It was also discussed how to evaluate the capability of pipeline steel to transit from toughness to fracture by DWTT.
论述了落锤撕裂试验的方法和标准，并对用DWTT来评定管材及其焊接接头的韧脆转化能力进行了探讨。