The heat preservation and calculation method for thickness layer of directly-buried steam pipes are discussed and introduced.
本文探讨和介绍了蒸汽直埋敷设管道的保温及保温层厚度计算方法。
A layer of paraffin is covered on the high-temperature phosphating solution, so that the paraffin can effectively avoid the steam loss and has heat-preservation function for the phosphating solution.
在高温磷化液上覆盖一层石蜡，可以有效避免蒸汽损失，同时对磷化液还起到一定的保温作用。
A layer of paraffin is covered on the high-temperature phosphating solution, so that the paraffin can effectively avoid the steam loss and has heat-preservation function for the phosphating solution.
在高温磷化液上覆盖一层石蜡，可以有效避免蒸汽损失，同时对磷化液还起到一定的保温作用。
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