本周唐山方管價格震蕩趨強廠家出貨情況有明顯好… 本周唐山方管價格震蕩趨強，工字鋼、槽鋼漲10-20元/噸，角鋼除正豐報價跌20元/噸，其它多穩。原料方坯價格漲30元/噸，坯材價差縮小，利潤受到原料擠壓，壓縮20-30元/噸，方管廠家利潤空間在40-60元/噸。成交情況…

冷鍍鋅方管是在所用的方管上利用冷鍍鋅的原理來使方管具有防腐蝕的性能。與熱鍍鋅不同冷鍍鋅涂料主要通過電化學原理來進行防腐，因此必須保證鋅粉與鋼材的充分接觸，產生電極電位差，所以鋼材表面處理很重要。

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.

　　國內方管市場或呈弱勢盤整態勢操作基本以穩為主…方管市場價格窄幅震蕩。早盤開市，受期貨拉升影響，唐山鋼坯漲10-20元，現昌黎、遷安普碳方坯含稅出廠價分別為3650、3640元，由于拉升幅度較小，助推力度不 足，各區域市場觀望情緒濃厚，操作基本以穩為主。成交來看，…