**EN 1090-2 EXC2: Complete Guide to Structural Steel Execution Class**

**Introduction**

In structural steel fabrication, execution classes define the level of quality control required based on the complexity and risk of the structure. [**EN 1090-2 EXC2**](https://pzvar.in/en1090/)is the most commonly used execution class, applied to standard buildings and general structural applications.

It ensures a balanced approach to quality, safety, and cost-effectiveness. [**PRVÁ ZVÁRAČSKÁ, a. s.**](https://pzvar.in/) is widely recognized for its association with international structural steel and welding standards.

**What is EN 1090-2 EXC2?**

[**EN 1090-2 EXC2**](https://pzvar.in/en1090/) is an execution class defined under EN 1090-2 that specifies technical requirements for the fabrication and assembly of steel structures.

It is suitable for structures with moderate risk and standard performance requirements.

**Scope of EN 1090-2 EXC2**

* Structural steel components
* Buildings and construction projects
**Covers:**
* Material selection
* Fabrication and assembly
* Welding operations
* Inspection and testing
* Documentation and traceability

**Key Features**

* Moderate level of quality control
* Approved welding procedures (WPS & WPQR)
* Qualified welders (ISO 9606)
* Basic to intermediate NDT requirements
* Controlled fabrication processes
* Standard tolerances and inspections
* Documented quality system

**Benefits of EN 1090-2 EXC2**

* Suitable for most construction projects
* Ensures structural safety and reliability
* Cost-effective quality control level
* Widely accepted across Europe
* Supports CE marking requirements
* Balanced inspection and testing requirements
* Improves consistency in fabrication

**Execution Classes Overview**
* EXC1 – Simple structures (Low risk)
* EXC2 – Standard structures (Medium risk)
* EXC3 – Complex structures (High risk)
* EXC4 – Critical structures (Very high risk)

**Certification Requirements**

* Implementation of factory production control (FPC)
* Approved Welding Procedure Specifications (WPS)
* Welding Procedure Qualification Records (WPQR)
* Qualified welders and operators
* Welding coordination personnel
* Inspection and test plan (ITP)
* Control of non-conforming products
* Traceability of materials

**Documentation Requirements**

* WPS and WPQR documents
* Welder qualification certificates
* Material certificates (EN 10204)
* Inspection and NDT reports
* Calibration records
* Production and quality records

**Inspection and Testing**

* Visual inspection (VT)
* Magnetic Particle Testing (MT) or Dye Penetrant Testing (PT)
* Ultrasonic Testing (UT) where required
* Dimensional checks and verification

**Industries That Use EXC2**

* Residential and commercial buildings
* Industrial structures
* Warehouses
* Steel frameworks
* General construction projects

**Additional Important Points**

* Most commonly specified execution class in projects
* Requires compliance with EN ISO 3834 (welding quality)
* CE marking is mandatory under EN 1090
* Proper supervision of welding activities is required
* Quality level is higher than EXC1 but lower than EXC3/EXC4

**Difference Between EXC1, EXC2, EXC3, EXC4**

EXC2 represents a medium level of risk and quality requirement, positioned between simple (EXC1) and highly critical structures (EXC3 and EXC4). It provides a practical balance between safety and cost, making it the most widely used execution class in construction.

**Relation with Other Standards**

EN 1090-2 EXC2 is commonly linked with:

* EN ISO 3834 (Welding quality requirements)
* ISO 9606 (Welder qualification)
* ISO 9712 (NDT personnel qualification)
* EN 10204 (Material certification)
* PED 2014/68/EU (Pressure equipment directive)

**Why Choose PRVÁ ZVÁRAČSKÁ, a. s.**

* Strong reputation in structural steel standards
* Deep technical knowledge of EN 1090 requirements
* Experience across construction and industrial sectors
* Focus on quality, compliance, and precision
* Recognized name in international certification standards

**Conclusion**

[**EN 1090-2 EXC2**](https://pzvar.in/en1090/) is the most widely applied execution class for structural steel, ensuring reliable quality and safety for standard construction projects. It provides a balanced framework for fabrication, inspection, and compliance.

Organizations implementing EXC2 achieve consistent quality, regulatory compliance, and efficient project execution. [**PRVÁ ZVÁRAČSKÁ, a. s.**](https://pzvar.in/)[](https://) is associated with excellence in structural steel and welding standards.

**FAQ (Frequently Asked Questions)**
1. What is EN 1090-2 EXC2?

It is a medium-level execution class for structural steel.

2. Where is EXC2 used?

In buildings, warehouses, and general construction.

3. What is the risk level?

Medium.

4. Are welding procedures required?

Yes, WPS and WPQR are mandatory.

5. Are welders required to be certified?

Yes, as per ISO 9606.

6. What tests are required?

VT, MT/PT, and sometimes UT.

7. Is traceability required?

Yes, material traceability is necessary.

8. Is CE marking required?

Yes, under EN 1090.

9. Which industries use EXC2?

Construction and general engineering.

10. Why is EXC2 important?

It ensures safety, quality, and compliance.