BS EN 970 outlines the prerequisites, execution rules, and equipment requirements for the visual examination of fusion welded joints in metallic materials. It applies to all types of fusion welds, including butt welds, fillet welds, and branch connections.
The standard mandates that visual testing must be performed: Before welding (joint preparation and fit-up) During welding (inter-run cleaning and imperfections) After welding (final weld profile and surface defects) 2. Core Requirements of BS EN 970
| Discontinuity | Normal Level | Stringent Level | | :--- | :--- | :--- | | | Not permitted | Not permitted | | Undercut | ≤ 0.5 mm depth | ≤ 0.2 mm depth | | Porosity (single pore) | ≤ 1.0 mm diameter | ≤ 0.5 mm diameter | | Excess penetration | ≤ 2.0 mm height | ≤ 1.0 mm height | | Incomplete fusion | Not permitted | Not permitted |
Weld metal overflowing onto the parent metal surface without fusing to it. bs en 970 visual inspectionpdf best
An inspection is not legally complete until it is documented. Under the standard guidelines, a professional visual inspection report must feature the following data blocks:
BS EN 970 is the historical British and European standard for the visual examination of fusion welds in metallic materials. While it has been officially superseded by , many industry professionals still refer to it by the original BS EN 970 designation for quality assurance and training.
ISO 5817 defines three for imperfections: BS EN 970 outlines the prerequisites, execution rules,
If required, check for signs of heat tinting or scale indicating appropriate thermal exposure. 6. Common Weld Defects Identified Under BS EN 970
If you are seeking the "best" resource for visual inspection, do not rely solely on BS EN 970.
Buy both PDFs. Use EN 970 for manufacturing shop floor control; use ISO 17637 for third-party audit trails. Core Requirements of BS EN 970 | Discontinuity
Are the parts aligned within tolerance? Is the root gap correct?
Measuring throat thickness, leg length, and reinforcement height. 🛠️ Required Inspection Tools
Given your search intent, you want the definitive source. Do not rely on file-sharing sites.
Ensure current, voltage, and travel speed are within the WPS (Welding Procedure Specification) limits. 3. After Completion
The benefits of implementing BS EN 970 visual inspection PDF include: