Scrap magnet

When sourcing scrap magnets, you must prioritize the Lifting Capacity (rated for specific materials like heavy melting scrap or pig iron) and the Duty Cycle (typically 60% or 75% for continuous industrial use). Ensure the magnet uses High-Quality Aluminum or Copper coils; copper offers better conductivity and longevity but at a higher cost. Additionally, verify the Insulation Class, where Class H is the industry standard for heat resistance during prolonged operation.

Compatibility depends on the Excitation Voltage (usually DC 220V) and the Power Consumption. You must ensure your crane or excavator has a Matching Control Cabinet and Rectifier. For hydraulic setups, check if the supplier provides a Hydraulic-Driven Generator that integrates directly with your machine's hydraulic lines to eliminate the need for external power cables.

For international trade, the product should carry the CE Marking for European markets or meet ASME B30.20 standards for below-the-hook lifting devices. It is critical to request a Breakaway Force Test Report, which proves the magnet can hold at least 2 to 3 times its rated lifting capacity to prevent accidental drops in the workspace.

Circular Magnets are the standard for bulk scrap handling and loading/unloading in steel mills. Rectangular Magnets are preferred for lifting steel billets, plates, or pipes due to their distributed magnetic field. For underwater operations, you must specify a Waterproof Sealed Structure with specialized epoxy resin filling.

Always mandate a Pre-Shipment Inspection (PSI) by a third-party agency like SGS or Intertek. Specifically, request a Temperature Rise Test and a Cold/Hot State Lifting Power Test. Since these items are extremely heavy, returning them is economically unfeasible; therefore, Video Verification of the actual unit's serial number during testing is a mandatory precaution.

Focus on the Total Cost of Ownership (TCO) rather than just the unit price. Negotiate for a Spare Parts Package (including extra fuses, cable connectors, and carbon brushes) and a Warranty Extension to 18 or 24 months. For large orders, use Made-in-China.com's Secured Trading services to ensure payment is only released upon proof of shipment.

Scrap magnets are heavy and magnetic, which can interfere with ship/aircraft instruments. Ensure the supplier provides Magnetic Shielding Packaging if shipping by air (though sea freight is standard). For sea freight, ensure the wooden crates are Fumigated (ISPM 15 standard) and the magnet is treated with Anti-Rust Oil and VCI (Volatile Corrosion Inhibitor) film to prevent saltwater corrosion during transit.

Verify the HS Code (typically 8505.90 for electromagnets) with your local customs broker to determine the exact duty rate. Be aware of Anti-Dumping Duties that may apply to steel-related industrial components in certain regions. Ensure the Commercial Invoice and Packing List clearly state the technical parameters to avoid delays during classification.