本规程描述了根据ASME B31为地上金属管道系统设计和选择管道支架的标准。3.本规程仅限于427°C（800°F）及以下的温度范围，不得用于低温服务（即温度低于-101°C（150°F））。

This Practice describes the criteria for designing and selecting pipe supports for aboveground metallic piping systems in accordance with ASME B31.3. This Practice is limited to temperature ranges of 427°C (800°F) and less, and shall not be used for cryogenic service (i.e., temperature less than -101°C (150°F)).