天津本地镀锌方管价格稳中震荡趋稳出货为主天津镀锌方管市场观望出货。期螺方面，期螺2005午间收3558，跌5跌幅0.14%。低开3547，冲高回落，最高3567，最低3542，持仓减0.4万手，支撑 3530，压力3580。虽然早盘期螺冲高回落，但临近年底方管厂家挺价观望意…

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.

　　杭州镀锌方管市场价格偏强整理厂家竞争更为激烈…今日杭州镀锌方管市场价格偏强整理，幅度20-30元，国营与民营继续提价，大户资源库存不均，北方料仍在途较多，需求大于供给，也据本平台下游反馈，每日需求近百吨，出口单子应接不暇。而近期杭州与上海两地镀锌方管资…