Welded Gate Hinges Self Closing Large & Heavy Doors & Gates, Specifically designed to automatically close steel framed door and metal gates that weigh up to 180 Kg, Welding Spring Hinge is sleek, stylish and simple, and are fully adjustable. Made of Steel and are maintenance free, due to its unique construction it’s fully adjustable while the door is still hanging and does not require periodic greasing. it can be used on internal or external doors where ever a door needs to close without assistance. can hold and close doors that weigh up to a staggering 180 Kg.