国内方管或将窄幅震荡运行为主成交不畅方管价格窄幅调整，今日唐山小窄带价格开盘持稳，但成交不畅，盘中下调20，降后成交依然一般，由于期货的持红震荡，对下游信心有所提振，午 盘厂家出货皆有好转，部分厂家出清日产；唐山355方管主流较昨降10，中…

长沙方管市场价格均涨50元。今日市场仍有上调，方管厂家跟涨意向积极，整体已成交为主，而近期的火爆售货都是工地及部分方管厂家有备货，缺货规格目前仍然没有补缺，成交依旧火热，也 有对节后行情看好的趋势，备货意识较强，交易气氛仍重，午后唐山、昌黎钢坯资源稳，现普碳方坯含税出厂3330元，成本暂稳，期螺开盘震荡，午后有一定回 落，方管厂家仍以出货为主，预计明日长沙方管市场价格稳中盘整为主。

The market price of Changsha Fangguan increased by 50 yuan. Today's market is still up-regulated, square tube manufacturers with positive intentions to rise, the overall deal has been mainly completed, and the recent booming sales are site and part of square tube manufacturers have stock, shortage specifications are still not filled, the transaction is still hot, there is a trend of optimistic market after the festival, stock awareness is strong, trading atmosphere is still heavy, noon. After Tangshan and Changli steel billet resources are stable, now ordinary carbon billet with tax is out of the factory 3330 yuan, the cost is temporarily stable, snail opening shocks, there is a certain drop in the afternoon, square tube manufacturers are still mainly shipped, it is expected that Changsha square tube market price will be stable in the middle of consolidation tomorrow. 方管价格方面：长沙方管市场萍钢产Φ6-10mm高线市场价格为4230元；萍钢产 Φ18-22螺纹市场价格为4100元；冷钢产Φ18-22螺纹市场价格为4100元；鄂钢产Φ18-22螺纹市场价格为4070元；冷钢产 Φ8-10mm盘螺市场价格为4320元，以上价格均涨50元。

　　导致无缝方管点腐蚀的材料因素分析今天小编为各位讲解一下影响无缝方管点腐蚀的材料因素都有哪些。合金成分对无缝方管来说，0、10及F等元素是使合金具有良好抗点腐蚀性能的主要合金元素。其他一些元素也可能有一定的效果，K等元素则会降低无缝方管的抗…