Cyl-Tec, Inc. is a one-stop source for compressed gas cylinders, cylinder accessories, and cylinder services. Cyl-Tec's US DOTand TC approved 3AAsteel cylinders include sizes 20CF through 300CF. Cyl-Tec is also a distributor for Luxfer aluminum and composite cylinders. Cyl-Tec operates a USDOT hydrostatic and ultrasonic cylinder re-qualification center, and their expert liquid cylinder repair service includes a 2-year warranty and pre-paid shipping for 4 or more cylinders.