How can the welds in the steel structure be considered qualified?
Welding seam (English Name: weld) is the bonding part formed after welding.
Steel structure is mainly made of steel material, and it is one of the main types of building structure. The structure is mainly composed of steel beams and steel plates, such as steel beams, steel columns, steel trusses and so on. Each component or component is usually connected with welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, stadiums, super high-rise and other fields.
The weld quality is divided into 3 grades, such as one or two, three, of which the quality grade of the first grade welds is the highest, and so on:Quality requirements for primary welds shall not include defects such as weld, root contraction, undercut and poor joint.There are no defects such as surface porosity, slag inclusion, cracks and arcing defects in the first and two grade welds.The three grade welds can only meet the quality standards of the above two grades with relatively low appearance.
