中国国家标准与美国ASTM标准低温无缝管的对比

Contrastive Analysis of Seamless Pipes for Low-Temperature Service in GB Standard of PRC and ASTM Standard of USA

重点从化学成分、纵向拉伸性能、低温冲击韧性等方面对中国国家标准和美国ASTM标准低温无缝管进行了对比分析;国标尚未形成低至-196℃的低温无缝管体系,目前仅达到-100℃,应加强更低使用温度铁素体型低温管的研发;国内多采用美标设计,应加强美标低温管的国产化;为提高认可度,建议开展国标低温无缝管入美标的审定。

Chemical composition,longitudinal tensile properties and impact energy of seamless pipes for lowtemperature service in GB/ASTM are mainly contrastively analyzed.The new ferritic seamless pipe should be strongly researched for lower temperature service,because the standard for low-temperature down to-196 ℃seamless pipes in GB has not be formed,which is only down to-100℃ at present.On the other hand,corresponding standards for low-temperature seamless pipes of ASTM used in China for design should be localized.In order to improve the recognition,it is proposed that low-temperature seamless pipes in GB should be applied into ASTM.