方管和矩形管冷弯成型时不同的特点冷弯方管、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 c…

北京地区方管价格较上周跌20-30元。本周北京地区贸易商心态较为谨慎，补库速度减缓，方管大户贸易商库存量较为齐全。一些方管厂家做钢厂直发，出货量还不错，主要以山东墨龙和元铧的方管为主。截至5月31日，山东108*4.5报价4750元；山东159*6报价4700元；山东墨龙325*8报价5000元。

The price of local government in Beijing dropped 20-30 yuan from last week. This week, traders in Beijing were more cautious, the speed of replenishment slowed down, and the inventory of large traders under the control of the party was relatively complete. Some square pipe manufacturers make direct delivery in steel mills, with good shipments, mainly in Shandong Molong and Yuanbao square pipe. As of May 31, Shandong 108*4.5 quoted 4750 yuan; Shandong 159*6 quoted 4700 yuan; Shandong Merong 325*8 quoted 5000 yuan.

本周临沂方管厂出厂价格有所下调，下调幅度在20-30元，中等热轧管出厂价格在4320-4380元之间，个别管厂有优惠政策出台刺激出货量。

This week, the ex-factory price of Linyi Fang Pipe Factory has been lowered by 20-30 yuan, and the ex-factory price of medium hot-rolled pipe is between 4320-4380 yuan. Some pipe factories have introduced preferential policies to stimulate the output.

北京地区主要以山东和河南凤宝货为主，包钢和新冶特钢的货几乎没有。北京地区方管厂家零售出货量偏差，在百吨以内，倾向于做钢厂直发，销往西北、西南地区的比较多。贸易商悲观情绪浓郁，倾向于能不补库尽量不补库。短期内北京方管市场还将持稳偏弱运行。

The main products in Beijing are Fengbao in Shandong and Henan, while there are almost no products in Baotou Steel and Xinye Special Steel. The deviation of retail shipments of local managed traders in Beijing area is less than 100 tons, which tends to be direct shipments of steel mills, and more of them are sold to the northwest and southwest regions. Traders are pessimistic and tend to avoid replenishment as much as possible. In the short run, the Beijing Square Management Market will remain stable and weak. 

　　马鞍山方管价格小幅上涨厂家生产盈利有所回升马鞍山方管价格小幅上涨，市场方面，原料端走高带动现货操作情绪，今全国热轧市场主流趋强，42市场中上涨比例达到80.96%，均价3989元/吨。其中华东市场趋强，涨幅10-40，截止中午上海4040-4050，无锡4050-4070，南京4…