ISO 3834-2

Welding quality is crucial when tanks, pressure vessels and technical steel structures are to be used in demanding industrial plants. Dana Tank is ISO 3834-2 certified and therefore works in accordance with documented requirements for quality management in the welding of metallic materials. Welding directly affects the product’s strength, tightness, durability and operational reliability. That is why it requires fixed procedures, qualified employees and a systematic approach to inspection and documentation.

The certification documents that we work in accordance with the most comprehensive part of the ISO 3834 series. The standard is used internationally and is particularly relevant in industries where welding quality is a critical part of overall safety and function. This applies especially to products and structures that must be used under load, pressure or demanding operating conditions.

ISO 3834-2 covers the entire welding process. This includes planning, material selection, welding procedures, welding qualifications, production, testing, and inspection. The purpose is to ensure that welded products are manufactured with high and consistent quality—regardless of the project’s size, complexity, or application.

At Dana Tank, welding is a core part of production. We work with documented processes and clear control points throughout the entire production process. This ensures that welding work is carried out correctly and in accordance with applicable standards, technical requirements, and the customer’s specifications.

The certification also supports work with traceability and technical documentation. Materials, welding procedures, qualifications, and inspection results are recorded as an integrated part of quality assurance. This provides the customer with a solid basis for approval, operation, and further documentation in their own systems.

ISO 3834-2 is used, among other things, in industry, energy, process plants, pressure equipment and structures. Here, documented welding quality is crucial for both safety and stable operation. The standard is therefore an important quality foundation for companies that need welded solutions with high technical precision.

For customers, the certification means that Dana Tank can deliver welded tanks, vessels, and custom solutions with documented quality, high technical precision, and full traceability. At the same time, it provides assurance that production takes place under controlled processes, where quality is not a final inspection, but an integrated part of the entire delivery.