Profile: P S I Plus, Inc. is a manufacturer of the tubular compressed gas cylinders. We specialize in a range of DOT 39 disposable cylinders, DOT 3E refillable cylinders, transport canada TC-39M cylinders and european union TPED certified disposable cylinders. Our cylinders are fabricated from special tubing drawn to precise specifications, formed at each end with welded enclosures. We offer all cylinders with powder coating finish and a welded foot ring base. We offer a broad range of disposable and refillable high pressure cylinder products. Our manufacturing products have facility also include cylinders may be delivered with or without valves, cylinders are available with fittings on each end and cylinders are available with or without foot rings for free standing applications. Our cylinders meet requirements for filling and transporting, flammable & non-flammable. Our high pressure disposable cylinders are manufactured to DOT 39 and DOT E-10788 specifications. Our refillable cylinders are manufactured to DOT 3E and DOT E-10776 specifications.