耐火阻燃经国家权威机构检测该材料为级不燃性材料，用其构成的墙体及钢结构保护耐火极限远远高于国家标准。

Fireproof The material is A class frameless one tested state authority institute. The water absorb and max fire durability meet the demand for light inner partition completely.

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本文论述了钢结构腐蚀的原因及其检测原理和方法。

This article discusses the causes and detection of steel corrosion principles and methods.

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对钢结构和混凝土结构水下目视检测的技术要点进行了探讨。

The technical key points of underwater visual testing of steel and concrete structures are discussed.

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