Surface defect glossary: scratch, roll mark, scale, pit, inclusion, sliver
Export documents and claims often describe surface defects in English. Learn scratch, roll mark, scale, pit, inclusion and sliver for accurate communication.
English terms commonly used for stainless surface defects in export documents, mill certificates and customer claims:
| Chinese | English | Note |
|---|---|---|
| 划伤 | scratch | Linear damage from mechanical contact |
| 辊印 | roll mark / roll defect | Roll surface pattern transferred to the sheet |
| 氧化皮 | scale / oxide scale | Not fully removed after hot rolling or annealing |
| 麻点 | pit / pitting | Small depressions, corrosion or rolled-in matter |
| 夹杂 | inclusion | Exposed non-metallic inclusion |
| 起皮 | sliver / peeling | Thin surface layer peeling off |
| 色差 | color difference / staining | Uneven passivation or cleaning |
| 边裂 | edge crack | Cracking at the edge |
| 波浪 | waviness | Flatness issue |
Communication advice:
1) Describe position + size + count/density + photos, not just the English word.
2) Reference the defect definitions and permitted limits in the standard or contract.
3) For export claims, attach photos, measurement records and heat/coil numbers; use third-party inspection if needed.
Consistent terminology reduces misunderstanding, but evidence (photos and data) is what wins a claim.
