Because of good mechanical performance, concrete-filled steel tube structures have been used for hundreds years in civil engineering.
由于良好的力学性能，钢管混凝土结构在土木工程中的应用已有上百年历史。
Thee heat exchange tube of the stainless steel is one of the elements of the heat exchanger, which is arranged inside the cylinder and is used for the heat exchange between the two medium.
不锈钢换热管是换热管是换热器的元件之一，置于筒体之内，用于两介质之间热量的交换。
The recuperator tube of ammonia condenser on a factory was made of 316l stainless steel and pitted after used for only one year.
某公司的立式氨冷凝器波纹换热管采用316 L不锈钢制造，使用1年后陆续发生腐蚀穿孔现象。
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