https://3d-labs.com/bolted-storage-tank/ Bolted Storage Tanks and Silos Design Services. Welcome to 3D-LABS, your premier destination for Bolted Storage Tanks and Silos Design services. The silos are manufactured with standard diameters of 4,647 mm – 12,000 mm. Cone inclinations of 45°, 55°, and 60° are available.