短期镀锌方管价格继续盘整运行市场心态偏疲…方管国内镀锌方管价格持续阴跌。据兰格钢铁云商平台监测数据显示：国内重点城市4寸(3.75mm)方管的平均价格为4158元，比昨日价格下跌8元，其中中心城市报价天津下调20元、唐山下调20元、西安下跌20元、北京下跌20元，其他中心城市暂与昨日持平。早盘，145小窄带价格累降30元，市场交投氛围较差，午前瑞丰带钢价格继…

南京市场方管价格下跌，成交一般。早盘螺纹钢期货低开低走。唐山方坯跌20元，现普碳方坯含税出厂3510元。从当地贸易商了解， 贸易战对市场心态影响较大，除刚需低价有所成交，大多仍处在观望。商家进少出多，以完成销售任务为主。钢厂库存尚无压力，不过价格下调较之前有所放大。综 上所述，预计明日南京市场或继续回落。

In Nanjing market, prices fell and transactions were normal. Early-trading threaded steel futures open low. Tangshan billet fell 20 yuan, and now ordinary carbon billet with tax is 3510 yuan out of the factory. From the local traders, the trade war has a great impact on the market mentality. Most of them are still on the sidelines, except for the bargain just needed at a low price. Businessmen come in less and go out more, mainly to complete sales tasks. There is no pressure on steel mill stocks, but the price reduction has been enlarged. In summary, the Nanjing market is expected to continue to decline tomorrow. 价格方面：截止发稿时，永钢、沙钢三级大螺纹4210元(吨价，下同)，跌50元。

Price: Up to the time of submission, Yonggang and Shagang three-level large threads 4210 yuan (ton price, the same below), down 50 yuan.

合肥方管市场降后观望厂家出货尚可方管合肥方管市场降后观望。唐山京华新国标产1.5寸（3.5mm）方管主流价格报价4190元，4寸（3.75mm）方管主流价格报价4130元，6寸（4mm）方管主流价格报价4340元。方管原料方面，今日上游昌黎部分钢坯公布12月31日--1月2日早上钢坯执行结算价3300；唐山瑞丰355mm系列带钢出厂报价3640，较昨日主流价格下调10元。方管市场方面，今日… 方管和矩形管冷弯成型时不同的特点方管冷弯方管、冷弯矩形管是通过外辊与管坯外壁的单向接触形成弯矩使带料弯折,冷弯会使弯折线产生压缩,压缩效应使弯折线纵向伸长,弯折处金属出现堆积变厚,这就是冷弯的压缩/增厚效应。Cold-formed square pipe and cold-formed rectangular pipe bend the strip through the unidirectional contact between the outer roll and …