Based on more than 20 years' experience in automatic door industry as well as the strong technology foundation, KBB  has become one of the few commercial building door system solution providers in the world, especially in the field of super large (20m could be achieved), super heavy commercial doors, KBB even stands at the top of the list.

General Description

Super high and super large swing door is not easy for any door manufacturer. KBB understand it quite well, and based on its more than 20 years' experience in automatic door industry as well as the strong technology foundation, we has become one of the few commercial building door system solution providers in the world, especially in the field of super high, super wide and super large commercial doors, KBB even stands at the top of the list.

Super large commercial doors contain mainly the large commercial sliding door, novel super large swing door /balanced door, and large unequal double door. KBB's  powerful R&D team has surely the capability of proving super large customized commercial swing door with the height over 20 meters, and this is impossible for most of the commercial swing door providers in the world.

Main parameters about KBB super large commercial doors are as follows

DOOR  TYPE	DISCRIPTION
1	Large commercial sliding door	Profiles of the door body could be 50/H40/H70/H40+70, recommended size less than 2400W×4000H for common sliding door, less than 4000W×4000H for Telescopic door, and maximum weight supported for the door is 300kg per leaf.
2	Large swing door /balanced door	Maximum size for the entrance could reach to 3000W×6000H, single leaf door weight could be 450kg, which needs to be equipped with H110 aluminum alloy frame.
3	Large unequal double door	the maximum size could reach to 1300W×3500H for the small door, and 6000W×6000H for the big door. Weight of the double doors could reach to 2000KG maximally, which need to be equipped with H70+H110 framed door entity or steeled big door entity.

Considering the size and weight of the super large commercial swing door, to ensure safety, KBB has implemented thorough selection and research for the related metal accessories, to maximally avoid accidents and danger during the application. the center hang type auto hinge used for the swing door and has the supportability of maximum 1600KG, and the maximum hoisting capacity required is just 128N, supportability of offset hung pivot hinge even reaches to 3000KG incredibly, which exceeds substantially the accessory requirement of the super large and super heavy commercial swing doors.