济南方管市价继续下跌厂家当前以收款为主方管济南方管市价继续下跌。市场方面，济南当地价格继续小幅下跌，区域内下游工地陆续停工，出货情况愈来愈差。方管厂家当前以收款为主，多数方管厂家预 计在小年后开始休假，正常交易仍有一周时间。预计本地市场当前态势持续运行。方管原料方面，今日上游昌黎部分钢坯上调10报3310；唐山瑞丰355mm系列带钢出厂报…

方管在使用状态下以铁素体组织为主的叫合金方管。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。这类合金方管存在塑性差、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. 

银川方管市场或将以震荡盘整为主厂家接货意…方管今日开市银川方管市场各方管厂家平稳报价，市场成交依旧冷清。据了解，近期酒钢方管价格依旧坚挺，市场依旧弱势，方管厂家接货意愿不高。成交方面， 临近年底，银川市场日渐减少，多数方管厂家日成交量仅二三十吨左右。资源方面，本周主导方管厂家到货量偏低，但市场需求基本停滞，市场库存较上周基本持平。据不完全统计，目… 上海方管价格持稳运行厂家多已出货为主方管上海方管价格持稳运行，市场方面，今本地市价主流稳中偏弱运行，目前方管市场需求整体一般，成交相对偏弱。由于当前南北热轧方管库存均偏低，五月以来下游需求有萎缩迹象，方管厂家多已出货为主。不过库存资源相对不多，商家出货压力不大，市场价格比较稳健。目前市场供需处于平衡，方管厂家多持观望态度。考虑到目前市场压力…