青岛方管价格与上一交易日相比小幅下调观望情绪…青岛方管市场价格与上一交易日相比小幅下调。山东其他市场如烟台、潍坊等地行情趋于稳定。方管厂家方面主要以出货为主，据方管厂家反映，受期货盘面走低影响今日青岛方管市场价格整体下调20 元左右，市场观望情绪…

冷镀锌方管是在所用的方管上利用冷镀锌的原理来使方管具有防腐蚀的性能。与热镀锌不同冷镀锌涂料主要通过电化学原理来进行防腐，因此必须保证锌粉与钢材的充分接触，产生电极电位差，所以钢材表面处理很重要。

Cold galvanized square tubes are used to make square tubes have anticorrosive properties by using the principle of cold galvanizing. Different from hot-dip galvanizing, cold-dip galvanizing coatings are mainly anti-corrosion based on electrochemical principle. Therefore, it is necessary to ensure full contact between zinc powder and steel to produce electrode potential difference, so surface treatment of steel is very important.

　　成都方管价格弱稳运行厂家多反映社会库存高成都方管市场价格小幅下调。价格方面，现达钢、威钢产Φ8-10mm高线市场价格为3740元/吨，较昨日降20， 成实产Φ8-10mm高线市场价格为3710元/吨，较昨日降20；镀锌方管方面，达钢、威钢产Φ18-25mm方管市场价格为3700元…