Answer: (1) The steel should be straight and there is n […]
(1) The steel should be straight and there is no obvious distortion. The blanking error should be within 5mm. The incision should be free of curling and burrs;
(2) The bracket shall be welded firmly, without obvious deformation, and the vertical clearance and design deviation between the cross braces shall not exceed 5 mm;
(3) The metal bracket must be treated with anti-corrosion treatment. When it is located in areas with damp heat, salt, fog and chemical corrosion, it should be treated according to the design for special anti-corrosion treatment.