About Us

The company began its activity in 1987, individually, manufacturing aluminum and iron frames.

In 1990, the company became Qual - Indústria Metálica, Lda. In 2002, the current manufacturing plant was inaugurated and in 2003 the PVC frames became part of the production process.

Visit our show room and get in touch with our technicians!


We are a company certified according to ISO 9001.

Quality Policy

At QUAL, quality is felt as the only way to achieve our goal: total satisfaction of our customers, suppliers and employees.


Invest on differentiation to achieve excellence.


Satisfying the orders and requests of the customers within the deadlines with the demandable quality and the maximum value added.


Our products are CE marked in accordance with the norm NP EN 14351, which has been compulsory since February 2010.

  1. Requirements
  2. Wind Resistance
  3. Water tightness
  4. Acoustic performance
  5. Air permeability
  6. Thermal transmission coefficient


Technical follow-up of new projects

Manufacturing aluminum and pvc window frames

Customized solutions for each client

After-sales service and technical assistance for all types of frames

Contact us

234 600 630
234 600 630
Call to the national fixed network (PT)

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