Sandwich structure is a bearing structure with excellent mechanics performance, which can fully display material function, ensuring materials maximum utilization, achieving the result of steel saving.

夹层结构是一种力学性能优越的承载结构，它可以充分发挥材料的作用，做到物尽其利，达到节约钢材的效果。

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For a large tubesheet, performing stress analysis is especially useful for saving the material while keeping sufficient strength of the tubesheet.

在大直径的场合下，正确分析管板受力状态，对保证换热器安全运行和节约材料等起着非常重要的作用。

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This kind of heat preservation and heat insulation material with its unique performance to create a new situation of the heat preservation and heat insulation and energy saving.

这种保温隔热材料将以其独特的性能开创保温隔热节能的新局面。

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