Derek di atas kepala adalah alat dan perlengkapan penting untuk mekanisasi dan otomatisasi proses produksi dalam produksi industri modern dan transportasi pengangkatan. Oleh karena itu, overhead crane banyak digunakan di perusahaan industri dan pertambangan dalam dan luar ruangan

Overhead crane is a mechanical equipment that is placed horizontally above workshops, warehouses and open-air storage yards and is used to lift various objects. It is the most widely used lifting machinery in the mechanical industry, metallurgical industry and chemical industry. In modern industrial enterprises, it is one of the important equipment to realize mechanization and automation of the production process, reduce heavy manual labor, and improve production efficiency.

Small-tonnage gantry and bridge cranes are often used in machinery manufacturing, assembly, warehouses and other places. The general tonnage is less than 50 tons, but the operating intensity is no less than that of large-tonnage lifting equipment. How to choose cost-effective small-tonnage gantry and bridge cranes?