Environmental safety and regulatory compliance
EU regulations
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Regulations
Construction of pressure vessels according to UNI EN 13455 and PED Directive
Compliance with European regulations for the safety of pressure equipment Overview of the UNI EN 13455 standard and the PED Directive 2014/68/EU
Compliance with European regulations for the safety of pressure equipment
Overview of the UNI EN 13455 standard and the PED Directive 2014/68/EU
The UNI EN 13455 standard is the technical reference for the design, manufacture and testing of unfired pressure vessels, such as tanks, reactors and autoclaves used in the industrial, energy, pharmaceutical and food sectors.
This standard applies to containers subject to internal or external pressure greater than 0.5 bar, and it is harmonized with the European PED (Pressure Equipment Directive) 2014/68/EU, which is mandatory for CE marking of pressure equipment placed on the European market.
EN 13455 establishes advanced design criteria to ensure the mechanical strength, structural integrity and long-term safety of equipment, also taking into account the effects of cyclic pressures, thermal variations, corrosion and fatigue. Requirements are defined for:
- Materials and component certifications;
- Calculation methods and structural checks;
- Welds and non-destructive testing;
- Safety devices and pressure relief valves;
- Hydraulic tests, pneumatic tests and final inspections.
In combination with the PED Directive, the standard guides the manufacturer in selecting the most suitable conformity assessment module (A, B, C, G, H, etc.), based on volume, pressure, physical state of the fluid and risk category (I – IV).
The entire life cycle of the vessel – from design to construction, up to commissioning – is subject to evaluation by a Notified Body, with the issuance of technical documentation, the EC declaration and mandatory marking on the product.
At the customer’s request, and in compliance with the PED Directive, it is also possible to design and manufacture pressure vessels using alternative internationally recognized codes, such as ASME VIII Div. 1, the AD 2000 Code or other sector-specific standards, provided they are accompanied by a conformity assessment compatible with the essential requirements of the Directive itself.
Manufacturing vessels in compliance with EN 13455 and the PED Directive – possibly integrated with alternative codes – is synonymous with certified quality, compliance with European regulations and the protection of both operators and plants, in all sectors where the handling of pressurized fluids is a critical safety factor.

Pressure safety (UNI EN 13455 + PED)
EN 13455, harmonized with the PED Directive, defines the requirements for pressure vessels, mandating the use of certified materials, qualified welds and non-destructive testing to ensure safe containment under pressure.
Leak prevention system
All the referenced standards include specific measures to prevent accidental leaks, through the use of multiple walls, safety devices, automatic controls and inspection plans.
Monitoring and testing system
It is mandatory to carry out functional and structural checks, including leak tests, pressure tests and final inspections, to ensure the suitability of the vessel before commissioning.
Periodic inspections and maintenance
The regulations require that vessels undergo regular inspections by qualified technicians or notified bodies, with a frequency that varies according to the type of service and the risk category.
Technical documentation and traceability
Each vessel must be accompanied by complete documentation certifying the materials used, the welding processes, the inspections carried out and the maintenance plan, ensuring traceability and regulatory compliance.
Proven expertise – UNI EN 13455 + PED Directive
Steeltech specializes in the construction of pressure vessels and equipment designed in accordance with the UNI EN 13455 standard and compliant with the PED Directive 2014/68/EU.
The company manages the entire process of design, production and CE certification, working in cooperation with Notified Bodies to ensure compliance with the essential requirements of safety and reliability.
At the customer’s request, Steeltech can also apply alternative international codes (such as ASME VIII Div.1 or AD 2000), always in compliance with the PED, demonstrating regulatory versatility that translates into customized and compliant solutions for every market.
Steeltech: your partner for the construction of tanks in the national and European industrial market
Thanks to its consolidated experience in the design and construction of stainless steel and carbon steel vessels, Steeltech of Corato is recognized as a reliable partner in the Italian and European industrial market.
The company operates in full compliance with the main reference standards:
- UNI EN 14015 for welded steel atmospheric tanks;
- API 650 for welded tanks intended for the storage of industrial fluids;
- UNI EN 13455 with PED certification for pressure equipment;
- NTC 2018 and Eurocodes for structural and seismic design;
The integrated approach adopted by Steeltech ensures that every project is customized, certifiable and compliant with the standards required by the client, in full respect of environmental, technical and safety regulations.
Why choose Steeltech for your certified vessels
In every project, Steeltech applies in-depth regulatory knowledge and a certified working methodology, supported by a qualified technical staff, licensed welders, non-destructive testing and complete technical documentation.
The vessels manufactured by Steeltech are designed to ensure:
- Structural reliability over time
- Compliance with Italian, European and international regulations
- Adaptability to different industrial sectors (chemical, food, pharmaceutical, environmental, energy, water treatment)
- Complete project management, from design to final testing
Turnkey solutions
Vessels certified according to international standards
We design vessels in compliance with the latest regulations and standards used worldwide, such as:
Thanks to its know-how and 50 years of experience, Steel Tech is able to provide a turnkey product starting from design, calculation reports, construction, delivery and on-site installation/assembly.