Vietnam 
English 
Japan 
Korea 
China 
Indonesia 
Thailand 
Welding Quality Control – A Key Factor Determining the Reliability of Steel Structures
-
07/04/2026
In the steel structure industry, welds are considered the critical “linking element” that directly affects the strength and safety of the entire structure. No matter how accurate the design is or how high-quality the materials are, if the weld quality is not ensured, the structure will still pose potential risks during operation.
Therefore, welding quality control is a mandatory process that must be strictly implemented in accordance with technical standards, consisting of three main stages: before welding, during welding, and after welding.
1. Pre-Welding Control
Before welding begins, all technical factors and working conditions must meet the required standards:
- Inspect incoming materials to ensure they are free from rust, cracks, or deformation.
- Clean the welding surfaces, removing dirt, oil, grease, and other contaminants.
- Assemble components with correct dimensions and joint gaps according to design drawings.
- Ensure welding equipment, electrodes, filler wires, and shielding gases are in good condition and properly calibrated.
- Welders must be properly instructed and fully understand the Welding Procedure Specification (WPS).
Seico welding quality control - before welding
Proper preparation helps minimize errors during the welding process.
2. In-Process Welding Control
During welding, supervision must be continuous and strictly maintained:
- Control key parameters such as current, voltage, travel speed, and heat input.
- Monitor interpass temperature to ensure compliance with standards.
- Observe continuously to detect early signs of distortion or defects.
- Any deviation from the welding procedure must be recorded and corrected promptly.
Seico welding quality control - during welding
Close coordination between supervising engineers and production supervisors plays a crucial role in maintaining consistent weld quality.
3. Post-Welding Control
After welding is completed, inspection and evaluation are required:
- Check weld shape and dimensions according to technical drawings.
- Detect surface defects through visual inspection (VT).
- Apply Non-Destructive Testing (NDT) methods such as:
- MT (Magnetic Particle Testing)
- PT (Liquid Penetrant Testing)
- UT (Ultrasonic Testing)
- RT (Radiographic Testing)
Seico welding quality control - after welding
Only structures with welds that meet the required standards are allowed to proceed to the next stage.
Welding quality control is not only a technical requirement but also a decisive factor in ensuring the safety and service life of steel structures. Strict compliance with all three stages of the process helps companies ensure product quality, minimize risks, and enhance their reputation in the market.
Seico - True Steel - Complete Trust
-------------------
SEICO STEEL
Website: http://seico.vn
Email: hnsales@seico.vn
YouTube: www.youtube.com/@SEICOJSC
LinkedIn: SEICO JSC trên LinkedIn
Tin tức liên quan
- 07
- Apr
SEICO GROUP TEAM MASTERS THE 2026 TECHNICAL STANDARDS
- 07/04/2026
SEICO GROUP provides training on the 2026 Technical Requirements to ensure a correct and unified understanding across the entire system, enabling all teams to be ready to apply the new technical standards from the outset.
Xem thêm(5).png)
- 20
- Mar
SEICO Accompanies Thai Tuan Group on a 470 Million USD Factory
- 20/03/2026
With a strong development orientation in the textile and garment sector, Thai Tuan Group has invested in the construction of a large-scale fabric manufacturing plant with a total investment of over 470 Million USD.
Xem thêm.png)
- 17
- Mar
Inside the factory project designed - manufactured - constructed by Seico
- 17/03/2026
SEICO Steel Structure is proud to present images from the interior of the factory project directly designed, manufactured, and fully constructed by SEICO. This project clearly demonstrates our comprehensive capabilities, synchronized processes, and the high technical standards that SEICO consistently commits to in every project.
Xem thêm
- 13
- Mar
SEICO’s Milestone in the Thailand Market
- 13/03/2026
The project in Thailand marks an important milestone in SEICO’s journey to expand its presence in international markets.
Xem thêm.png)
- 31
- Mar
LIGHT STEEL FRAME SOLUTION - OPTIMAL CHOICE FOR LIVESTOCK FARM PROJECTS
- 31/03/2026
Thanks to integrated design on specialized software and manufacturing with modern CNC machines, C and Z sections made from galvanized steel with thickness from 0.6 – 2.5mm are automatically produced with high precision. The resulting structure is strong yet features low material consumption per m².
Xem thêm
- 08
- Mar
Happy International Women’s Day – March 8
- 08/03/2026
March 8 is a special occasion to honor the beauty, strength, and remarkable contributions of women in every aspect of life.
Xem thêm
- 03
- Mar
SEICO: GROUNDBREAKING CEREMONY FOR READY-BUILT FACTORY AND WAREHOUSE PROJECT IN HAI PHONG
- 03/03/2026
On February 26, 2026, Seico held the groundbreaking ceremony for the ready-built factory and warehouse for lease project at Lot CN2B, Nam Dinh Vu Industrial Park (Zone 2), Dong Hai 2 Ward, Hai An District, Hai Phong City.
Xem thêm