Why Are More Brazilian Door Frame Manufacturers Choosing Grooving Machines?

In Brazil's home improvement and construction market, the demand for metal door frames is growing rapidly. Whether it's a residential or commercial project, customers have higher requirements than ever before for the appearance, precision, and stability of door frames. To enhance product competitiveness, more Brazilian manufacturers are re-evaluating traditional bending methods and introducing grooving machines as key equipment into their production lines.

This article shares the experiences and benefits of one of our customers from São Paulo, Brazil, from their initial encounter with grooving machines to their eventual adoption of the equipment.

1. Intensified competition in the door frame industry: the challenges they face are becoming increasingly apparent

This Brazilian customer mainly produces stainless steel and galvanized sheet door frames, with a stable annual output. However, they also face common challenges in the door frame industry:

① ★ The bending radius is too large, and the edges and corners are not three-dimensional enough

The door frame structure is mainly composed of straight lines and right angles, and the visual lines must be clean and crisp.
Traditional bending methods often result in excessively large radius angles, making the edges of the door frame appear "blunt" and "rounded", especially when combined with wall decorations, resulting in a less refined look.

② ★ Thin sheets (0.8–1.2 mm) easily deform

Door frames are typically made from thin material, which often leads to the following problems when bending:

· Indentations

· Local wrinkling

· Slight twisting

These defects will be magnified during the assembly of finished products, leading to rework.

③ ★ Difficult to maintain consistency in mass production

Door frames are produced in batches, and any deviation in the bending angle could cause the entire batch to jam or have uneven assembly gaps, affecting project delivery.

These problems made them realize that traditional bending could no longer meet the ever-increasing market demands.

2. Their first encounter with Grooving: What they cared about sasn’t Price, but Reliability

At a South American building materials exhibition, they saw door frame samples produced with grooving for the first time.
The sharp edges, clean bends, and consistent dimensions immediately caught their attention.

Soon after, they contacted us and came to our factory with samples and drawings for in-depth discussions.

Their main concerns include:

· Is the angle of the bend after grooving straight enough?

· Would long parts shift during the grooving process?

· Is it stable in long-term operation?

· Is it suitable for their large daily order volume?

After reviewing their product structure and material specifications, we recommended a vertical grooving machine, which is ideal for long profiles and typical door-frame geometries.

3. How did Grooving machines change their door frame production?

After receiving the machine and undergoing a 7-day trial production test, they gave very clear feedback: the grooving machine elevated the quality of their door frames to a new level.

① Sharper lines and a significantly better visual appearance

After grooving, the bending radius is almost invisible.
Edges become:

· Straight

· Sharp

· Smooth

Once installed, the door frames look far more premium and refined.

This was the improvement they valued the most.

② No more wrinkling or deformation on thin sheets

Because grooving reduces bending resistance, their thin 0.8–1.2 mm materials now bend:

· Without marks

· Without wrinkles

· Without twisting

Even new operators can achieve stable, high-quality results.

③ Drastically improved batch consistency

Stable grooving depth means stable bending angles.
As a result:

· Assembly issues dropped sharply

· Rework rate decreased from 12% to below 3%

④ Faster delivery and higher production efficiency

The combination of grooving + bending allowed them to streamline their workflow.

For complex door frame profiles, it even reduced the number of steps and saved production time.

4. The biggest surprise: Total production cost actually decreased

After introducing the grooving machine, the management team conducted several cost evaluations.
The results were beyond their expectations:

· Material savings: More precise bending means less allowance needed

· Lower rework rate: Less wasted labor and less time lost

· Reduced welding: Many sections can now be formed with bending instead of welding

In the end, the machine paid for itself in less than one year.

Their comment was memorable:“The grooving machine is not a cost—it’s a capability.”

Conclusion: Why Brazil’s door frame industry is moving toward Grooving

Brazil’s door frame market is highly competitive, and appearance quality has become a decisive factor for end customers.
Grooving technology offers clear advantages:

· Sharper, more defined edges

· No deformation on thin materials

· Better batch stability

· Supply chain image upgrade

This is why more and more Brazilian door frame manufacturers are making the shift toward grooving.

If you produce door frames, cabinets, trims, or any product that relies on precise straight-line bending, we can help you evaluate your materials, dimensions, and order structure to recommend the right grooving solution for your factory.