Rolled Q235B/Q345B steel plates with automatic welding; fast processing.
Dense, uniform rolled structure with accurate groove and shaft-hole machining.
Lighter at the same specification, reducing total crane load and operating effort.
Flexible diameter, length, and wall thickness; production starts after cutting for short lead time.
Cost-effective for single pieces, small batches, custom, metallurgical, or special applications.
One-piece gray iron, ductile iron, or cast steel casting; seamless integral body.
Casting may form shrinkage, porosity, or segregation; rough surface needs more machining.
Heavier walls increase machine load and energy consumption.
Customization is limited by mold cost; mold, casting, and aging extend delivery.
Economical for standardized high-volume production, but costly for small batches.
Welded drums are ideal for small-batch, custom, and special crane applications, while cast drums are better suited for standardized high-volume production.