Buses Framing, body panels and fueling for buses Whether you’re building or refueling, efficiency is crucial in the busing business. Worthington Industries supplies the steel that is used to build structural frame rails and body panels on buses. We also supply composite tanks for fueling buses with compressed natural gas (CNG). We pioneered the original composite cylinder technology decades ago, and we offer several technologies now, including our Type III tanks, with seamless aluminum liners for a tank that’s gas tight, with superior impact and heat tolerances. Our Type III tanks are favorites among our customers looking for lightweight, durable fuel storage. We test beyond safety regulations and offer superior project management for large, complex programs. Our engineers and designers are always ready to tackle your specific challenge, customizing the product for your unique needs.