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Macro examination is principally used for checking the quality of welds. A cross section of welded material is polished and etched for examination. Porosity, lack of weld penetration, lack of side wall fusion, poor weld profile and other important defects are checked in accordance with the relevant welding standard.
1. BS EN ISO 5817
2. ASME IX
3. AWS D1.1
|Macro Etch Test(Seamless Welded Test)|
|upto 100 mm OD|
|Between 100mm to 200mm OD|
|Over 200mm OD|