购买移动脚手架时需要注意哪些问题呢有人会问，脚手架较重要的是什么？那自然是产品的安全可靠，经济实惠。移动脚手架能够说是脚手架中较契合大家需求的脚手架了，大到建筑堆砌，小到室内家装，都可以见到它的使用。正是因为其灵活使用，而备受用户…

脚手架在使用状态下以铁素体组织为主的叫合金脚手架。含铬量在11%~30%，具有体心立方晶体结构。这类钢一般不含镍，有时还含有少量的Mo、Ti、Nb等到元素，这类钢具导热系数大，膨胀系数小、抗氧化性好、抗应力腐蚀优良等特点，多用于制造耐大气、水蒸气、水及氧化性酸腐蚀的零部件。这类合金脚手架存在塑性差、焊后塑性和耐蚀性明显降低等缺点，因而限制了它的应用。炉外精炼技术（AOD或VOD）的应用可使碳、氮等间隙元素大大降低，因此使这类钢获得广泛应用。

The square tube is called alloy square tube, which is mainly composed of ferrite in service state. The chromium content ranges from 11% to 30%. It has a body-centered cubic crystal structure. This kind of steel generally does not contain nickel, and sometimes contains a small amount of Mo, Ti, Nb and other elements. This kind of steel tool has the characteristics of high thermal conductivity, small expansion coefficient, good oxidation resistance and excellent stress corrosion resistance. It is mostly used to manufacture parts resistant to atmospheric, steam, water and oxidative acid corrosion. This kind of alloy square pipe has some shortcomings, such as poor plasticity, obvious decrease of post-weld plasticity and corrosion resistance, which limits its application. The application of out-of-furnace refining technology (AOD or VOD) can greatly reduce the gap elements such as carbon and nitrogen, thus making this kind of steel widely used. 

　　华北地区脚手架市场价格主跌个稳全天走势低迷周初开盘，脚手架市场价格主跌个稳。早盘开市，期货市场开局不利，低开低走，各地脚手架现货价格受此影响也纷纷下跌。目前，华北地区价格在3830-3840元，华东价格3830元，华南 价格3940元，北材南下华南具有一定优势，…