关键词: 管道 标准 设计 管材 地区等级 设计系数 壁厚 压力试验, Pipeline Standard Design Pipeline Steel Location Class Design Factor Wall Thickness Pressure Test

Abstract: Central Asia, China-Myanmar and China-Russia pipelines have become an important energy strategic channel in China. In order to improve the scientificity of pipeline design and safeguard the interests of China, it was necessary to study the differences in pipeline process design between China standard, American standard and Russian standard. The important technical differences between domestic and foreign standards, including pipeline steel, location class, design factors, wall thickness calculation and pressure test, were studied.The conclusion was that China standard of pipe selection was stricter than American standard, only PLS2 grade pipe was selected, and Russian standard pays attention to the tensile strength of pipe. China standard and American standard divide location class according to the number of households along the pipeline. The Russian Standard divides location class according to the type, location of the pipeline section and the risk level of the transmission medium. The design coefficients of location Class 1 division 1 of GB are 0.8 or 0.72, and those of location Class 1 division 1 of US Standard are 0.8, which are not identical with those of pipeline working factors in Russian standard. China standard and American standard calculate the wall thickness according to the yield strength of pipeline, Russian standard calculate the wall thickness according to the tensile strength of pipeline; The calculated wall thickness of Russian standard was higher than that of China standard and American standard.The Russian standard was stricter in pressure test medium and duration time. There was a gap between China standard and American standard and Russian standard in high strength hydraulic test. The research results can provide reference and guidance for the design and acceptance of new overseas pipelines in China.