En Iso 13920-bf Best May 2026
EN ISO 13920-BF is a specific technical standard for general tolerances in welded constructions, the best way to make it "interesting" is to highlight how it prevents costly manufacturing headaches. Here are two options depending on your platform: Option 1: The "Problem-Solver" (Best for LinkedIn)
How to use on drawings and contracts
- Specify: “Tolerances to EN ISO 13920, class B” (replace B with chosen class).
- State whether dimensions are before or after welding/machining.
- If tighter tolerances are needed for functional fits, specify them explicitly.
Q: Is EN ISO 13920-BF a mandatory standard? A: The standard may be mandatory in certain industries or countries. Check with local regulations and industry associations for specific requirements. en iso 13920-bf
- Backing weld is included in manufacturing sequence
- Tolerances account for any distortion from backing process
- Traceability to ISO 13920 dimensional requirements
Quality Control: Serves as the basis for inspection reports to determine if a welded assembly meets the functional requirements of the design. Specification Steel Construction - hazemag EN ISO 13920-BF is a specific technical standard
The standard covers the following aspects: Specify: “Tolerances to EN ISO 13920, class B”
If you see ISO 13920-BF on a document, it is highly likely a typo or a non-standard internal code. It almost certainly implies Class B for linear dimensions. The "F" likely refers to a "Fine" requirement for geometry (which would make it ISO 13920-AD), or it is a typo for D (making it ISO 13920-BD).