The surface quality standard of HEA360 European standard H-beam.
HEA360 European standard H-beam is a steel widely used in the construction and industrial fields, and its unique H-section design makes it have high bearing capacity and stability. In order to ensure the performance and safety of HEA360 European standard H-beam, its surface quality standards are very important.
First of all, the surface of HEA360 European standard H-beam should be smooth and flat, without obvious scratches, dents, convex and other defects. The surface roughness of the steel should meet the relevant standards to ensure good coating performance and welding performance.
Secondly, the depth of the surface decarburization layer of HEA360 European standard H-beam should not exceed the range specified in the relevant standards. The decarburization layer refers to the shallow non-metallic inclusions formed by the oxidation of carbon elements on the surface of the steel, and the excessively deep decarburization layer will weaken the hardness and wear resistance of the steel surface.
Thirdly, the surface corrosion grade of HEA360 European standard H-beam should meet the requirements of relevant standards. According to the GB T8923-88 standard, the corrosion on the surface of steel can be divided into four grades: grade A, grade B, grade C and grade D, of which grade A is the rust-free state and grade D is the more serious state of rust. For HEA360 European standard H-beam, generally the corrosion grade above B should be selected to ensure its corrosion resistance and service life.
Fourthly, the surface coating quality of HEA360 European standard H-beam is also one of the important quality criteria. Coating can effectively protect the steel from corrosion and damage, and improve its aesthetics and service life. Pretreatment should be carried out before coating, including degreasing, rust removal, phosphating and other processes to ensure the stability and reliability of coating quality. After the coating is completed, visual inspection and performance testing should be carried out to ensure that the coating is free of bubbles, peeling, cracking, etc., and the adhesion, hardness, wear resistance and other performance indicators of the coating should also meet the requirements of relevant standards.
To sum up, the surface quality standard of HEA360 European standard H-beam is one of the important factors to ensure its performance and safety. In the process of production and use, testing and control should be carried out in strict accordance with relevant standards to ensure the quality and service life of HEA360 European standard H-beam. At the same time, strengthening the maintenance and management of surface quality can effectively improve its corrosion resistance and aesthetics, prolong the service life and reduce maintenance costs.