通过COD试验测定了两种用于LPG储罐建造的结构钢焊接接头低温抗断裂性能,研究了材料与工艺组合、试验温度等因素对焊接接头低温抗断裂性的影响,所得结果为LPG储罐的选材与焊接工艺制定、结构的抗断裂分析提供了基础数据。 The low temperature rupture resistance of two kinds of structural steel welded joints for LPG tank construction was measured by COD test. The effects of material and process combination, test temperature and other factors on low temperature fracture resistance of welded joints were studied. The results obtained were as follows: The selection of materials and welding process development, structural analysis of the fracture provides the basic data.