Step-Lap Joint Silicon Steel Laminations for Transformer Cores
Precision-cut silicon steel laminations designed with step-lap geometry for minimized joint losses in stacked transformer cores. Used in both distribution and power transformers for improved efficiency. Covered under HTS 8504.90.96.34 for stacked core laminations.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for wound core transformers
Laminations specifically designed for spiral wound core construction use different subheading.
If general silicon electrical steel
Non-oriented silicon steel sheets not specifically cut for transformer cores classified by steel type.
If iron cores fully assembled
Pre-assembled magnetic cores with stacked laminations classified as complete cores, not loose laminations.
Not sure which classification is right?
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Import Tips & Compliance
• Include lamination stacking sequence diagrams showing step-lap pattern implementation
• Core loss test certificates (IEEE C57.12.90) validate electrical performance specifications
• Separate invoices for yoke vs. limb laminations to match transformer assembly requirements
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