Autogas LPG internal toroidal tanks

An automobile LPG internal toroidal tanks for liquefied hydrocarbon gases (propane-butane) with operating pressure of 1.6 MPa with internal flange



The LPG auto tank is made in accordance with the requirements of State Standards, our specifications based on design documentation according to the wishes of the customer.

For each balloonstrength, calculation is performed according to applicable standards.

The design of the LPG auto tank is provided the minimum increase (corrosion allowance) to the wall thickness of 0.4 mm that allows more long-term operation.

The LPG auto tank destruction occurs at a pressure not lower than 6.75 MPa.

The assembly is made on specially manufactured stands.

The welded joints are performed by arc welding under protective gas.



The inner surface and the weld seams are in a natural state, pure, dry and unpainted.

Outside corrosion-resistant coating is a powder coat paint based on epoxy resins; it is applied for 5 minutes after pre-treatment which increases the adhesion and prevents corrosion under the paint layer.



  • Input control of materials;
  • Visual control;
  • Control of geometrical characteristics;
  • Radiographic and ultrasonic testing of welded joints;
  • Testing of the strength by the hydraulic pressure of 3.0 MPa;
  • Leak test by pneumatic pressure of 1.6 MPa with immersion in a bath;
  • Control of paint coatings.

Toroidal cylinders from KharPromTeh

KharPromTeh is a leading enterprise in the Ukraine, which is specialized on the items working under the pressure. The products of the plant have the excellent quality and comply with all the Ukrainian and European standards. The production workshops are equipped with the most modern equipment, and technologies of production comply with the safety norms. You can buy the toroidal cylinder from the manufacturer at the official dealers of the Kharkov plant of industrial techologies at the plant price. Currently, the KharPromTeh is not cooperating with the buyers directly, you can buy the gas cylinder and other products both wholesale and retail only at dealers at the price of the manufacturer. The toroidal cylinder, the price of which at our official dealers is more available due to the absence of the dealer price markup, is the highest quality product. The regions of the presence of the products of the KharPromTeh plant: Ukraine, Russia, Kazakhstan, Poland, Germany.

Each toroidal gas cylinder is subject to the testing under the pressure. The testing is conducted by the professional experts on the specialized stands. They are manufactured of the carbon steel according to GOST 2651. There is the design office on the basis of the Kharkov plant of industrial techologies, the one function of which includes the calculation of the strength of LPG auto tanks under the pressure. The welding is performed in the inert gas atmosphere, which gives the especial strength to the welding connections and fully excludeds the possibility of leakage. All the toroidal gas cylinders are covered with the reliable anti-corrosion coating and painted with the special paint to achieve the special quality. They can withstand any crush-tests, LPG auto tanks are resistant to the physical and mechanical impact. The thickness of walls is more than 3 mm, and this singnificantly extends the life time of the product. Its term of operation not less than 12 years, or 2.5 thousands filling cycles.

The cylinder for the compressed gas equipment with the internal flange

The toroidal cylinder is the LPG auto tank for the gas fuel, which shall be installed onto the vehicles as the part of the gas-cylinder equipment. To buy the internal toroidal cylinder means to chose the device with the internal flange. That is the multi-valve, from which the external filling device will be connected, is in the cylinder center. You can buy the cylinder for the compressed gas equipment under the spare wheel in volume of 35 to 65 litres. The internal toroidal cylinder for compressed gas equipment perfectly fits for the economical driving in the city using the gas fuel.

The product is used only under the propane. The CGE cylinder under the spare wheel is installed into the vehicle in the place of the spare wheel into the luggage boot or into the underbonnet space. Since the LPG auto tanks are installed in the place of the spare wheel, drivers, who used to always have it in the car, will need to find the other place to hide it. But it can be installed in other place, which fits for installation by parameters. The place of the spare wheel is not a mandatory condition. Such LPG auto tanks are leaders in sales at the market due to the optimum volume and convenience of use. The impact of the direct sunlight is not favourable for them, that is why it is recommended to not allow that. But for this it is sufficient not to leave the car with the open boot during the sunny weather.


Material The balloon is made of carbon steel St3ps according to DSTU 2651. At the customer`s request, balloon can be manufactured from other steel grades, recommended by NLALP 0.00-1.59 (Normative Legal Acts on Protection of Labour)
Equipment The balloon is equipped with a discharge and filling flange