UNE-EN 13445-4-2014 PDF

Full title and description

STB UNE-EN 13445-4-2014 — Unfired pressure vessels — Part 4: Fabrication. This standard specifies fabrication requirements for unfired pressure vessels made of steels, including material traceability, welding and permanent joint requirements, manufacturing tolerances, forming and heat treatment, production tests, repairs and finishing operations.

Abstract

Part 4 of EN 13445 provides the mandatory fabrication rules to ensure pressure-vessel components manufactured from metallic materials meet the construction, traceability and test requirements set out in EN 13445 series. It covers welding qualification and procedures, non‑welded permanent joints, dimensional tolerances, heat treatment and post‑fabrication testing and acceptance criteria used by manufacturers, Notified Bodies and inspection authorities.

General information

• Status: Withdrawn / superseded (replaced by EN 13445-4:2021 and associated amendment).
• Publication date: September 2014 (EN approval 19 August 2014; national publication dates vary by member body).
• Publisher: European Committee for Standardization (CEN); adopted and reproduced by national bodies under national designations (e.g., UNE / AENOR in Spain).
• ICS / categories: 23.020.30 – Pressure vessels, gas cylinders.
• Edition / version: EN 13445-4:2014 (original 2014 edition; later superseded by EN 13445-4:2021 and its amendment).
• Number of pages: Typically published around 70–80 pages in national reproductions (example national PDF listing shows 80 pages).

Scope

Specifies requirements for the fabrication of unfired pressure vessels and pressure parts made of steels, including requirements for material traceability and documentation, manufacturing tolerances, welding (qualification, procedures and inspection), permanent joints other than welding, forming, heat treatments, surface treatments, production tests and repair procedures. It applies where EN 13445-1 and the relevant material and design Parts of EN 13445 are referenced. It does not cover fired vessels or non‑metallic materials unless expressly referenced.

Key topics and requirements

• Material traceability and marking (documentation requirements for raw materials and certificates).
• Manufacturing tolerances and dimensional acceptance criteria for vessel components.
• Welding requirements: qualification of welders and welding procedures, acceptance levels, NDT requirements and weld documentation.
• Requirements for permanent joints other than welding (e.g., brazing, mechanical joints) and their qualification.
• Forming and heat‑treatment procedures, including post‑weld heat treatment and stress relief where required.
• Production tests and inspection: pressure testing, non‑destructive examination, and acceptance testing regimes.
• Repair rules for defects discovered during fabrication and after testing, including rework acceptance criteria.
• Integration with EN 13445 series requirements (design, materials, inspection, special materials).

Typical use and users

Used by pressure‑vessel manufacturers, welding engineers, quality and inspection personnel, third‑party certifying/Notified Bodies, design engineers and procurement teams involved in the construction, testing and certification of unfired pressure vessels. It is applied during shop fabrication, assembly, testing and final documentation for pressure equipment placed on the market in jurisdictions recognizing EN standards.

Related standards

EN 13445 is a multi‑part European standard. Closely related parts include EN 13445‑1 (General), EN 13445‑2 (Materials), EN 13445‑3 (Design), EN 13445‑5 (Inspection and testing), EN 13445‑6 (spheroidal graphite cast iron) and EN 13445‑8 (aluminium). National versions (UNE‑EN, BS‑EN, SS‑EN, etc.) reproduce the EN text as national standards.

Keywords

Unfired pressure vessels, fabrication, welding, traceability, pressure equipment, EN 13445, manufacturing tolerances, NDT, heat treatment, repairs.

FAQ

Q: What is this standard?

A: STB UNE-EN 13445-4-2014 is the European standard Part 4 of the EN 13445 series titled "Unfired pressure vessels — Part 4: Fabrication", which sets fabrication and shop‑floor requirements for unfired pressure vessels made of steels.

Q: What does it cover?

A: It covers material traceability, welding and jointing requirements, manufacturing tolerances, forming, heat treatment, production testing, non‑destructive examination, repair rules and finishing operations necessary to fabricate pressure vessels in compliance with the EN 13445 series.

Q: Who typically uses it?

A: Fabricators and manufacturers of pressure vessels, welding engineers, quality/inspection personnel, Notified Bodies and designers responsible for ensuring that shop fabrication and final testing meet European requirements for unfired pressure equipment.

Q: Is it current or superseded?

A: EN 13445-4:2014 has been superseded by a later edition — EN 13445-4:2021 (with subsequent amendment A1:2023). Users should apply the current 2021/2023 edition where applicable; national adoptions and withdrawal dates have been recorded by CEN and national bodies.

Q: Is it part of a series?

A: Yes — EN 13445 is a multipart standard covering unfired pressure vessels (Parts 1–8 cover general rules, materials, design, fabrication, inspection/testing and special materials). Part 4 is the fabrication chapter within that series.

Q: What are the key keywords?

A: Pressure vessels, fabrication, welding, traceability, EN 13445, unfired pressure equipment, NDT, heat treatment, manufacturing tolerances.