special l section steel tube的意思|示意

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特种截面钢管

异形钢管 ... special l screw 特制螺钉 special l section steel tube 异形钢管 special l shaped color lamp 异型彩色灯泡 ...

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。