SC welded pipe, full name Submerged Arc Welding Welded Pipe, is a steel pipe manufactured by submerged arc welding process. It is made of steel plate through a series of processes and has excellent performance and a wide range of applications.

1. Manufacturing process of Submerged Arc Welding Welded Pipe
The manufacturing process of SC welded pipe is relatively complicated, but it ensures its excellent performance and quality stability.
- Material selection: Common materials for SC welded pipes include Q235A, Q235B, Q345, and other steel plates of different grades. These steel plates have undergone strict quality inspection to ensure the material quality of the welded pipe.
- Steel plate pretreatment: First, select high-quality steel plates, and go through cutting, chamfering, grinding, and other processes to ensure the flatness and neatness of the steel plate edges.
- Rolling forming: The pretreated steel plate is rolled into a tube by a rolling machine, and then welded by a submerged arc welding process to form a long tube blank.
- Welding process: SC welded pipe adopts a submerged arc welding process, which is an automated and efficient welding method. During the welding process, the welding arc is formed in the molten metal covering layer below the weld, so that the weld can be formed and the weld quality is excellent.
- Tube billet shaping: The tube billet after welding is processed by a shaping machine to make its appearance smoother and the size more accurate.

2. Features of Submerged Arc Welding Welded Pipe
SC welded pipe has a series of unique characteristics, which makes it widely used in the industrial field.
- Corrosion resistance: The surface of SC welded pipe is treated with anti-corrosion, has good corrosion resistance and is suitable for various harsh working environments.
- High strength: Made of high-quality steel, the weld quality is good, the overall strength is high, and it can withstand greater pressure and load.
- Good plasticity: The manufacturing process of SC welded pipe makes it have good plasticity, which is convenient for various processing and manufacturing to meet different engineering needs.
- High welding quality: Using submerged arc welding technology, the weld quality is high, the welding strength is high, and the safety of the welded pipe is guaranteed.
- Smooth surface: The surface of SC welded pipe is smooth and flat, with a beautiful appearance, which meets the requirements of modern industry.

3. Application fields of Submerged Arc Welding Welded Pipe
SC welded pipe is widely used in various fields due to its excellent performance characteristics.
- Oil and gas transportation: SC welded pipe is widely used in oil and gas transportation pipelines. Its corrosion resistance and high strength make it an ideal transportation pipeline material.
- Building structure: In building structures, SC welded pipe is often used to build bridges, large buildings, etc. It has high strength and good plasticity, which can meet the needs of complex projects.
- Marine engineering: Due to the corrosiveness of seawater, pipelines are required to have good corrosion resistance. SC welded pipes are widely used in marine engineering, such as submarine pipelines, offshore platforms, etc.
- Petrochemical engineering: In petrochemical engineering, the corrosion resistance of pipelines is extremely high, and the excellent performance of SC welded pipes makes it the preferred material for petrochemical engineering.

As a high-quality steel pipe, SC welded pipe plays an important role in industrial production. Its manufacturing process is complex, but it ensures the high quality and stable performance of the pipeline. With the characteristics of corrosion resistance, high strength, and good plasticity, it is widely used in various fields. In the future, with the continuous advancement of industrial technology, I believe that SC-welded pipes will show their irreplaceable advantages in more fields.