.jpg)
Welded joints in steel structures play a very important role in ensuring the strength and safety of construction projects. Following technical standards not only improves quality but also helps prevent structural risks. In this article, we will learn about common welding methods and current standards for evaluating steel structure welds.
Steel structure welding is the process of joining metal parts by using high heat to create strong welded joints. This method is widely used in the construction of pre-engineered steel buildings, bridges, and many industrial projects. Welding requires high technical skills and must follow strict standards to ensure quality. Each type of structure may require different welding methods and standards for the best results.
.jpg)
.jpg)
Today, there are many welding methods used in the production and construction of steel structures. Depending on the nature of the project and technical requirements, engineers will choose the most suitable method. Below are two common and widely used welding methods in steel structure construction.
Manual metal arc welding uses a covered electrode to create an electric arc between the rod and the metal. This method is flexible and suitable for many types of structures and different working positions. However, the weld quality depends heavily on the skills of the welder and the working conditions. Therefore, welders must have good technical knowledge and real experience.
.jpg)
.jpg)
Automatic and semi-automatic welding helps increase productivity and accuracy during the welding process. Machines control the welding process and reduce human error. This method is suitable for mass production and large steel structures. Thanks to automation, the welds are more consistent and meet higher quality standards.
Steel structure welds must follow national standards to ensure quality and safety. Depending on the project’s technical needs, choosing the right testing method must be done carefully and correctly. There are 2 Common Ultrasonic Testing Methods:
X-ray or gamma ray testing helps detect internal defects such as porosity, cracks, or slag inclusions inside the weld. This method uses radiation to penetrate the metal and capture images of the weld's internal structure. Defects that cannot be seen by the naked eye can be found and evaluated accurately. The test results must be compared with TCVN 4395-1:1986 to ensure quality.
Ultrasonic testing uses high-frequency sound waves to detect defects inside the weld. The device sends ultrasonic waves into the weld, and any defects will reflect the sound waves back, helping to locate the problem. This method is safe and can be used for many types of steel structures. The results of this test must be evaluated based on TCVN 1548-1987 for accuracy.
Following welding standards for steel structures is a key factor in ensuring the strength, safety, and durability of the construction. Whether using manual or automatic welding methods, weld quality must always be strictly checked according to current standards. This is a mandatory requirement for any company involved in professional steel structure construction. VIS STEEL, a professional steel structure company, always follows strict welding standards during construction, bringing long-term value and maximum safety to every project.
________________
Contact Information
VIS STEEL STRUCTURES COMPANY LIMITED
Address: N11, No. 119, Pho Quang Street, Duc Nhuan Ward, Ho Chi Minh City
Factory: Lot 1G5, CN9 Street, Tan Binh Industrial Park, Vinh Tan Ward, Ho Chi Minh City
Hotline: (+84) 28 354 710 30 - (+84 0274) 3622 213
Email: info@vissteel.com.vn
