... specials特殊钢 special section tube异形管 special treatment steel (STS)特殊处理钢材 ...
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special l section steel tube 异形钢管
There are three kinds of cross-section for special-shaped concrete-filled steel tube compound columns. They are cross-shaped, T-shaped and L-shaped.
异形钢管混凝土组合柱最常见的截面形式有三种，即十字形、T形和L形。
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