短期无锡本地镀锌脚手架价格稳中盘整商家调价意…无锡镀锌脚手架市场价格平稳运行。期螺方面，期螺1910午间收3866，涨91，涨幅2.41%。高开3780，大幅拉涨，最低3777，最高3885，持仓增超24万手，资金面偏 多，支撑3840，压力3890 。早盘期螺大幅拉涨，但商家调价…

让现已加工成制品脚手架具有较小曲折度还得依靠机械东西校直机来完结。所以为了消除脚手架曲折，一切脚手架都需求经过冷校直。脚手架曲折是因为轧机调整不妥，轧制时残留的剩余应力以及因为沿管子截面和长度上冷却不平等缘由形成的。因而，不行能从轧机直接得到很直的管子，只要通过冷校直管子的曲折度才干满意技能条件的规则。

To make the square tubes of the products processed now have a small degree of flexibility, we have to rely on the mechanical straightening machine to complete the straightening machine from east to west. Therefore, in order to eliminate the twists and turns of square tubes, all square tubes need to undergo cold straightening. The bending of square pipe is caused by improper adjustment of rolling mill, residual stress during rolling and unequal cooling along the section and length of pipe. Therefore, it is impossible to get very straight pipes directly from the rolling mill. Only by cold straightening the pipe's flexibility can the rules of skill conditions be satisfied.

校直的根本道理即是使脚手架进行弹塑性曲折，由大的曲折度成为小的曲折度，因而钢管在校直机内有必要遭到重复曲折。而钢管重复曲折的程度主要由校直机的调整所决议。

The basic principle of straightening is to make square pipe elastic-plastic twist, from large twist to small twist, so it is necessary for steel pipe to be repeated twist in straightening machine. The degree of repeated twists and turns of steel pipe is mainly determined by the adjustment of straightening machine.

影响校直质量的要素许多，如原管的曲折度，钢管尺度和材料校直机型式，调整参数等。

There are many factors affecting the quality of straightening, such as the bending degree of the original pipe, the size of the steel pipe and the type of straightening machine for materials, and the adjustment of parameters.

　　短期内重庆脚手架市场价格弱势下行成交较差本周重庆脚手架市场价格小幅下调，市场成交较差。本周国内主流市场脚手架价格小幅下调，目前全国均价3919元/吨，较上个交易日价格下跌14元/吨；本周重庆市场整体价格弱势下调，成交较差， 现脚手架报价4020-4030元/吨…