Firstly, the heating chamber is employed to circulating pipe from the ascending pipe to make fuller use of the space and to reduce the height of the equipment; 其主要改进包括将加热室从原来的上升管内沸腾段的下方移到了循环管的中下部较好地利用了空间,降低设备高度;
Pump ascending cast ( compressive cast) construction in core steel pipe concrete of the concrete arch 钢管砼拱桥管芯砼泵送顶升浇灌(压注)法施工