The narrow fluctuation of domestic domestic domestic tube prices was dominant on March 11. Over the weekend, the upstream raw material shutdown and overhaul increased, and market sentiment soared. According to the survey, the production line of strip steel in Handan area has basically stopped 50%, the agreement volume of local mainstream pipeline factory has decreased by 30%-40%, and the quotation of pipe factory has increased actively; in Tangshan area, because there is no gas in Jingang, the strip steel that has not been produced has been returned indefinitely. This news directly causes 145 strip steel gap of 6000 tons per day, which stimulates the price of rack pipe to rise obviously; In addition, the overhaul of Ruifeng No.1 and No.2 pipelines has also been carried out. It has an impact on broadband resources. To sum up, the price of tube factory in Jinji area has been rising in a high mood. The price increases range from 20 to 40 yuan. Now the price of 4 inch (3.75 mm) tube factory in Hebei mainstream pipe factory keeps between 3950 and 4140 yuan. However, the short jump and low opening of snails have an impact on market sentiment. After the price rises, the transaction is postponed, and the cautious mentality is becoming more and more obvious. In the downstream market, individual areas adjust slightly with the upstream, but the actual transaction is not affected. At present, construction sites around Hebei have been shut down in a large area, terminal demand is always tepid, short-term supply and demand are weak, and resource-constrained square tube prices will continue to be strong. 价格方面：国内重点城市4寸(3.75mm)方管的平均价格为4214元，比上周五价格 下跌1元，各中心城市其中唐山上调20元，上海降30元，其他地区报价暂与上周五价格持平。
Price: The average price of 4-inch (3.75 mm) square tubes in key cities in China is 4214 yuan, down 1 yuan from last Friday's price. Among them, the price of Tangshan was raised by 20 yuan and Shanghai by 30 yuan. The price quoted by other cities is still the same as last Friday's.
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