1. Steel junction boxes must be machine-cast and cannot be assembled manually.
2. They must meet the requirements of JBT 8593-1997 Electrical Accessories - Concealed Panels, Adjustment Plates and Mounting Boxes.
3. The junction box material must be steel plate.
4. The thickness of ordinary junction boxes should not be less than 1.0mm, and the thickness of explosion-proof junction boxes should not be less than 3mm.
5. The processing technology of the junction box should meet the project's requirements for robustness. When the junction box is placed on the ground with its opening facing down and stepped on forcefully, it should not deform.
6. The junction box should have an aesthetically pleasing appearance, a smooth surface, and be free of dirt.
7. The technical parameters of the junction box must meet GB 1245-2005.
8. Junction boxes should be packaged in boxes of 100.
