RG-2T Outward Groove Forming Process: How Is a Convex Groove Formed on Metal Pipe?
In some pipe processing jobs, a standard inward groove is not the only requirement. Certain applications may require an outward groove, also known as a convex groove, where the pipe wall is formed outward instead of inward.
Unlike cutting or machining, outward groove forming does not remove material from the pipe. The groove is created by rolling pressure. As the pipe rotates, the forming roller gradually presses the pipe wall outward and shapes the groove profile step by step.
RG-2T is an inward and outward roll grooving machine designed for special groove forming work. In this article, we focus on how RG-2T forms an outward groove and how the process works in real operation.
What Is an Outward Groove?
An outward groove is a groove profile formed toward the outside of the pipe wall.
In a common roll grooving process, the groove is usually pressed inward. With outward groove forming, the forming direction is the opposite. The roller does not cut into the pipe. Instead, it applies pressure and allows the pipe wall to deform outward in a controlled way.
In simple terms, an outward groove is not cut out. It is formed by rolling.
During operation, the pipe keeps rotating between the rollers. The forming roller gradually applies pressure to the pipe wall, and the groove profile is formed around the pipe circumference.
How RG-2T Forms an Outward Groove
The outward groove forming process depends on controlled rolling pressure.
Before operation, the correct roller set should be installed according to the required groove type. The pipe is then placed between the rollers, and the groove position is aligned.
Once the machine starts, the pipe rotates steadily. The operator applies hydraulic feed gradually, allowing the forming roller to press the pipe wall outward. As the pipe continues rotating, the outward groove takes shape little by little.
Although the process looks simple, the final groove quality depends on several factors: the correct roller set, stable pipe rotation, smooth feeding, and proper groove depth control.
RG-2T Outward Groove Forming Video
The video below shows the actual outward groove forming process with RG-2T.
In the video, the pipe rotates continuously while the forming roller gradually applies pressure. The outward groove is not formed in one step. It is shaped progressively through the rolling process.
This operation video gives a clear view of how RG-2T works when an outward groove profile is required.
Key Features That Support Outward Groove Forming
Integrated Hydraulic Feed
Outward groove forming requires gradual pressure control. The integrated hydraulic feed structure allows the operator to apply pressure step by step during the forming process.
Adjustable Groove Depth
SampleDifferent groove requirements may need different forming depths. The groove depth adjustment structure helps the operator control the final groove profile according to the actual job. Content
Gear Reduction Motor
Outward groove forming is a continuous rolling process. Stable pipe rotation is important for forming a consistent groove around the pipe. The gear reduction motor provides steady driving output during operation.
Compact Structure
RG-2T has a compact machine structure, making it suitable for workshop use, small-batch processing, and special groove forming jobs where a large automatic machine is not required.
Where Can This Process Be Used?
RG-2T is suitable for special groove forming work on metal pipes, especially for aluminum pipes and stainless steel pipes where an outward groove profile is required.
Outward groove forming is not needed in every pipe project, but it can be useful when a special connection or structural groove shape is required. The actual forming result depends on the pipe material, wall thickness, roller set, and groove requirement.
For detailed working range, pipe material information, and machine configuration, please visit the product page:
Conclusion
Outward groove forming is a rolling process, not a cutting process. The pipe wall is shaped outward by controlled pressure while the pipe rotates between the rollers.
RG-2T can be used for both inward and outward groove forming. In outward groove applications, stable rotation, gradual hydraulic feeding, and the correct roller set are key to achieving a consistent groove profile.
The operation video provides a direct look at how the outward groove is formed in real use, helping users better understand the working principle of RG-2T.