hollow section

The paper mainly focuses on the spin-forming mechanism and current researches of non-axisymmetric parts,ellipse parts and non-circular parts appeared in recent years.

主要阐述了非轴对称、椭圆和非圆截面空心件的旋压成形机理和近年来的研究现状。

Study on the hollow anti-sliding piles of reinforced concrete;

钢筋砼空心截面抗滑桩的研究