ISO 3834-1:2021 Certification Service

ISO 3834 is regarded as the welding quality requirement benchmark of the 21st century and certified compliance means global recognition of a company's capabilities. The ISO 3834 standard is a tool for the control of the entire welding process from design to final handover.

SO 3834-1:2005 provides criteria to be taken into account for the selection of the appropriate level of quality requirements for fusion welding of metallic materials, among the three levels specified in ISO 3834-2:2005 ISO 3834-3:2005 and ISO 3834-4:2005. It applies to manufacturing, both in workshops and at field installation sites.

ISO 3834-1:2005 does not specify requirements for a total quality management system. However, quality management system elements where their inclusion will complement ISO 3834 are defined.

The Quality Management System is subject to EN ISO 3834-2,3,4. DIN/ČSN EN 15085 for the certification levels CL 1 to CL 4 currently applies to the competence of manufacturers in welding of railway vehicles and components. This applies for welding both in the workshop and on site. In relation to the specific Product Code, it determines the quality requirements of the welding work at three levels – higher – grade 2, medium – grade 3 and basic – grade 4. The required certification level is linked to specific applications and the relevant Product Code.
If the company has a certified quality system according to EN ISO 9001:2008 requirements, the certification level of the welding quality system according to EN ISO 3834-2 is also required. The quality system according to this standard is compatible with ISO 9001.
Certification of the manufacturers and assembly organizations (both in the workshop and on site) according to EN ISO 3834-2, 3, 4 – Quality requirements for fusion welding of metallic products. The standard consists of 6 parts:
Part 1: Criteria to be taken into account for the selection of the appropriate level of quality requirements are
Part 2: Comprehensive quality requirements
Part 3: Standard quality requirements
Part 4: Production requirements
Part 5: The documents with which it is necessary to conform to claim to the quality requirements of EN ISO 3834-2,3,4
Part 6: Guidelines for implementing ISO 3834
Special Welding Process is widely used in many key and small engineering and construction companies as an integral part of the main implementation process, affecting in various degrees the production of the final product. It is also often used in the foundry by means of repair welding. After its professional application, the product can be considered conforming.
The application of welding methods can be found in conjunction with simple products, up to very complex units, according to various product standards and legislative regulations. Our company deals with conformity assessment mainly in the so-called regulatory area where the conformity of the product with precisely defined Product Codes and legislative definitions for a given area is demonstrated. These are mainly links to the following areas of industry:
• pressure vessels
• pressure equipment
• boiler bodies
• nuclear facilities
• steel structures
• steel bridge structures
• aluminium structures
• railway vehicles, etc.