Heavy Duty Bed Storage Box Lifting Hinge

This heavy-duty box hinge (bed box lifting mechanism) is a core furniture hardware for storage bed boxes and storage chests. Built with thickened carbon steel and equipped with tension spring assistance, it delivers stable lifting support and strong load-bearing capacity. It allows easy lifting and closing of bed storage box panels, widely used for storage beds, ottomans, storage cabinets and multi-functional furniture.   ✅ Thickened Carbon Steel: Reinforced steel plate, powder coated black finish, anti-rust, anti-deformation and long service life ✅ Spring Assisted Lifting: Built-in tension spring, effortless opening & closing, smooth flip motion ✅ High Load-bearing: Solid rivet joint structure, stable support for heavy storage box panels ✅ Pre-drilled Mounting Holes: Convenient installation for furniture factory mass assembly ✅ Custom Service: OEM & ODM available, custom size, surface treatment upon request   Factory direct heavy duty box hinge with spring, thickened car…