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Steel support quality testing includes the following three contents: 1, processing size: steel frame processing size should meet the design requirements. 2, strength and stiffness: steel support must have sufficient strength and stiffness. 3, weld...

Steel support is an adjustable vertical pipe support frame for concrete formwork support, which is widely used in construction, tunnel and mine construction. European steel supports are common closed threaded supports. It consists of a 48 mm ...