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壹、What are the specifications of steel pipes used in billboards (light boxes)?
Hello, generally the square tube used for billboards is 2.5cm {width and thickness are 2.5cm}
A general 2.5cm square tube costs 3-5 yuan per meter
Welding is 2.5-3.5 yuan per square meter
Installation is generally a calculation {that is, it costs about 50 yuan to install a brand}
A general 2.5cm square tube costs 3-5 yuan per meter
Welding is 2.5-3.5 yuan per square meter
Installation is generally a calculation {that is, it costs about 50 yuan to install a brand}