1、优点1）门式钢管脚手架几何尺寸标准化。2）结构合理，受力性能好，充分利用利用钢材强度，承载能力高。3）施工中装拆容易、架设效率高，省工省时、安全可靠、经济适用。

1, advantage 1) standardization of portal steel tube scaffold geometry. 2) reasonable structure and good mechanical performance, making full use of steel strength and high carrying capacity. 3) construction is easy to install and disassemble, high efficiency, labor saving, time saving, safe and reliable, economical and applicable. 2、缺点1）构架尺寸无任何灵活性，构架尺寸成都收账任何改变都要换用另一种型号成都找人公司门架及其配件2）交叉支撑易在中铰点处折断；3）定型脚手板较重4）价格较贵

2. Disadvantage 1) There is no flexibility in the size of the frame. Any change in the size of the frame should be replaced by another type of gantry and its accessories 2) The cross support is easy to break at the mid-hinge point; 3) the stereotyped scaffold is more expensive 4)

3、适应性1）构造定型脚手架2）作粱、板构架成都收账支撑架（承受竖向荷载）；3）构造活动工作台；

3. Adaptability 1) Structural stereotyping scaffolding 2) as support of sorghum and slab frame (bearing vertical load); 3) tectonic active workbench;