OK Pipe System The Kongskilde OK Pipe Systems is ideal for pneumatic and mechanical conveying. The simple and flexible pipe systems can be adjusted to suit any specific purpose, resulting in shorter conveying distances and, therefore, the most efficient and economical solutions. The OK Pipe System is available in three different diameters: OK 100 (4""), OK 160 (6""), OK 200 (8""). The OK Pipe System's modular design comprises pipes, bends, branches, diverters, cyclones, outlets, etc. The components are assembled quickly and easily using the unique OK quick release couplings. The wide range of OK piping and accessories ensures flexibility and ease of installation on grain bins, silos, and buildings.