An overview of JGJ81-2002 welding technology regulation for construction steel structures......................................................................................
The JGJ81-2002 welding technology regulation is the standard regulation on construction steel structure welding technology issued by Construction Ministry of China. This regulation describes the welding technology requirements, welding process, welding quality requirements and acceptance criteria of construction steel structure. The purpose of the regulation is to improve steel structure welding quality and safety, and ensure the quality and safety of steel structure.
The JGJ81-2002 welding technology requirement describes the technical requirements of construction steel structure welding structure. It includes welding materials and welding material specifications, welding planning and procedure, welder qualification, welding process, welding operation process, welding inspection and quality control requirements, welding equipment and welding facility requirements, welding defects recognition and treatment.
The welding planning and procedure content includes welding plan preparation, welding base material selection and preparation, welding joint design, welding joint pre-treatment, welding of base material and weld joint, welding sequence and series of welding process, non-destructive testing and inspection of welding, acceptance criteria of welding parts, post welding and process treatment, specification and record keeping of welding process.
The welding process requires selection of materials, welding parameters and selection of welding process. The welding equipment and welding facility requirements include welding power source, welding torch, wire feeder, welder work bench, ventilation, welding fume and air cleaning equipment, welding flux storage, welding tools and other welding tools.
The welding quality requirements and acceptance criteria of construction steel structures include visual inspection of welding parts, non-destructive testing and mechanical testing. The welding defects recognition and treatment requires identification, classification, repair and prevention of welding defects.
The JGJ81-2002 welding technology regulation is a comprehensive welding technology regulation for construction steel structures. It provides comprehensive requirements and standards for welding materials, welding process, welding equipment, welding facility, welding quality, welding defects recognition and treatment. It is the foundation for ensuring the quality and safety of construction steel structure welding.
