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1. Gas Porosity Problem

2. Shrinkage Porosity Problem

3. Cracking Problem

4. Incomplete Fill or Non Fill Problem

5. Rough Surface Problem

6. Fire Scale or Fire Stain Casting Problem

7. Inclusions in Casting Problem

8. Dark Rough Oxidized Casting Problem

9. New Additions and the quality of used metal

10. Sprue

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467/7, ชั้น 2 โครงการมหาทุน พระราม 3 เซ็นเตอร์ ถนนพระรามที่ 3 กทม. 10120 Tel. (662) 2921992-3

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