预测：淡季效应明显 钢市震荡下滑

Group 1 - The core viewpoint of the article indicates that the domestic steel market is expected to experience fluctuations and potential weakness in the upcoming week due to various factors including external economic conditions, production limitations, and seasonal demand effects [4][5]. Group 2 - The Lange Steel National Absolute Price Index for the week of August 18-22, 2025, is reported at 3593 yuan, reflecting a decrease of 0.9% from the previous week and an increase of 2.9% year-on-year [1]. - The Lange Steel Long Product Absolute Price Index is at 3388 yuan, down 1.3% week-on-week and up 1.1% year-on-year [1]. - The Lange Steel Profile Absolute Price Index stands at 3571 yuan, with a week-on-week decrease of 0.2% and a year-on-year increase of 1.1% [1]. - The Lange Steel Plate Absolute Price Index is recorded at 3708 yuan, showing a decrease of 0.9% from the previous week and an increase of 5.7% year-on-year [1]. - The Lange Steel Pipe Absolute Price Index is at 4067 yuan, down 0.2% week-on-week and down 0.4% year-on-year [1]. Group 3 - The black futures market shows a slight overall decline, with the main rebar contract closing at 3119 yuan, down 11 points for the day and 69 points from the previous Friday [4]. - The latest open interest for the main rebar contract is 1.41 million lots, with a daily reduction of 26,000 lots and a total reduction of 207,000 lots from the previous Friday [4]. - The steel market is experiencing weakened demand due to regional production restrictions and seasonal effects, leading to a noticeable decrease in market transactions [5].