Certified excellence

METRA Building controls and verifies every phase of the aluminium production cycle, from extrusion to painting and coating, in order to ensure excellent performance in every processing stage in the absolute sense. METRA Building windows and doors are all CE marked, manufactured in Europe and certified by major national and international bodies.

Each product adapts to multiple architectural requirements and is characterized by superior resistance to all latitudes and climatic zones. METRA Building products stand out in terms of durability, thermal and acoustic insulation and extreme resistance to water and salt. They can also be burglar-proof and scratch-proof.

Each customer and each partner can check independently and in complete transparency the METRA Building certifications on the company portal.

Corporate certification

EN ISO 9001:2015

Requirements for Quality Management System

IATF 16949:2016

Requirements for the quality management system for series production and spare parts in the automotive industry

ISO TS 22163:2017

Business management system requirements for railway organisations: ISO 9011:2015 and special requirements for application in the railway sector

Environmental certification

ISO 14001:2015

Environmental Management Systems
Requirements for the environmental management system


METRA holds the Aluminium Stewardship Initiative (ASI) certification and is a member of the ASI. A global non-profit organisation that certifies the standards of the
aluminium industries with a view to environmental commitment and sustainable production.

Product Certification


Specifications for Decoration of coated Aluminium used for architectural Applications


Laying systems and products for windows and doors and new buildings complying with the requirements of UNI 11673-1 standard


Specifications for a quality label for liquid and powder coatings on aluminium for architectural applications

AAMA 2604-20

Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings

AAMA 2603-20

Voluntary Specification, Performance Requirements and Test Procedures for Pigmented Organic Coatings

EN ISO 3834-2:2021

Quality requirements for fusion welding of metallic materials
Part 2: Extended Quality Requirements

EN 15088:2006

Aluminium and aluminium alloys
Products for building structure applications
Technical conditions of control and delivery


Lloyd’s Register’s Rules and Regulations set appropriate standards for the design, construction and lifetime maintenance of ships, offshore units and land-based installations

RINA (naval)

Rina Rules for Testing and Certification of Marine Materials and Equipment
Requirements of the Rina rules for the Approval of Manufacturers of Material


German body working to test, monitor and certify companies on the basis of national and European standards and international guidelines.


Licence according to the SVTI Prescriptions vol.1, specification 704 for manufacturing of extruded pipes for pressure vessels type 4, for gas insulated switches, switchgears and transmission lines.

EN 15085-2:2020

Railway applications – Welding of railway vehicles and their components
Part 2: Manufacturer Requirements


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