RG-2T Outward Groove Forming Process: How a Convex Groove Is Formed on Metal Pipe
In some pipe processing jobs, a standard inward groove is not enough. Certain applications may require an outward groove, or convex groove, where the pipe wall is formed outward instead of being pressed inward.
This type of groove is not made by cutting or removing material. It is formed by rolling pressure. As the pipe keeps rotating between the rollers, the forming roller gradually applies pressure to the pipe wall and shapes the groove profile step by step.
RG-2T is an inward and outward roll grooving machine designed for special groove forming work. This article explains how RG-2T forms an outward groove and what happens during the actual forming process.
What Is an Outward Groove?
An outward groove is a groove profile that is formed toward the outside of the pipe wall.
In a common roll grooving process, the groove is usually pressed inward. Outward groove forming works in the opposite direction. The roller does not cut into the pipe and does not remove metal. Instead, it applies rolling pressure and allows the pipe wall to deform outward in a controlled way.
Simply put, an outward groove is not cut. It is roll-formed.
During operation, the pipe rotates continuously between the rollers. As the forming roller gradually applies pressure, the groove profile is formed around the full circumference of the pipe.
How RG-2T Forms an Outward Groove
The outward groove forming process depends on stable pipe rotation and controlled rolling pressure.
Before operation, the correct roller set should be installed according to the required groove profile. The pipe is then placed between the rollers, and the groove position is properly aligned.
Once the machine starts, the pipe rotates steadily. The operator applies hydraulic feed step by step, allowing the forming roller to press the pipe wall outward gradually. As the pipe continues to rotate, the outward groove takes shape little by little.
The process may look simple, but the final groove quality depends on several key factors: the correct roller set, stable pipe rotation, smooth feeding, and accurate 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 keeps rotating while the forming roller gradually applies pressure to the pipe wall. The outward groove is not formed in a single step. It is shaped progressively through continuous rolling.
This operation video gives users 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 and stable pressure control. The integrated hydraulic feed structure allows the operator to apply pressure step by step during the forming process.
Adjustable Groove Depth
Different groove requirements may call for different forming depths. The groove depth adjustment structure helps the operator control the final groove profile according to the actual job requirement.
Gear Reduction Motor
Outward groove forming is a continuous rolling process, so 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 aluminum pipes and stainless steel pipes that require an outward groove profile.
Outward groove forming is not required in every pipe project, but it can be useful for certain special connections or structural groove designs. 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:
【Add product page link here: RG-2T Inward & Outward Roll Grooving Machine】
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. For outward groove applications, stable rotation, gradual hydraulic feeding, and the correct roller set are important for 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 and application of RG-2T.