HSI Corporation has been producing custom hydraulic cylinders for a range of industries since 1976. From smaller size replacement cylinders to large bore specialty cylinders, we have the capabilities to meet the needs of your application. We understand that for demanding industries such as marine crane and drilling rig, safety and reliability are essential. Our manufacturing facility was built to handle heavy parts as well as long rods and tubes, ensuring that your cylinder is safe and effective. Our experienced engineering team has the knowledge to work with your custom needs, whatever they may be. View all of the industries we serve below.