Welcome to Hengyetong Gas Equipment


Tire Inflation

Nitrogen is an inert gas, so there are various benefits of filling the tires with nitrogen, gas mileage, longer tire life, driveability, smaller losses of the tire pressure due to temperature change and the cost savings. The reason is that nitrogen is an inert and dry gas and it eliminates oxidation which causes tire wear, permeability through rubber and the absence of moisture minimizes the wheel corrosion.

Metalworking Machinery

Nitrogen is used in the metalworking industry to improve production processes and minimise explosion risks. A method consisting of heat treatment and subsequent cooling is often used to harden metals. To avoid edge oxidation and decarburisation, especially during heating, a shielding gas atmosphere of nitrogen is used in the industrial sector. Gases (e.g. hydrogen) can form bubbles in metals in blast furnaces. Suc


Plastics can be produced using a variety of methods. Nitrogen plays an important role in these methods. With the aid of nitrogen, cycle times in production can be reduced and product quality can be improved. Moreover, the environmental compatibility of plastics can be increased by adding nitrogen. Nitrogen is used for injection mounding to improve the quality and the strength of mould plastic product. Liquid plast

Oil & Gas Industry

Nitrogen is used in a wide range of areas within the oil and gas industry to prevent fire and explosion hazards - both onshore and offshore. The low dew point of nitrogen (-50 °C) and the fact that Nitrogen is totally inert, makes it an ideal choice for pipeline drying. Nitrogen displaces oxygen, retards oxidation, and prevents explosions. Gas and oil refineries and tankers have an extensive pipeline network.

Coal Mining

Nitrogen gas can prevent fire and explosion hazards in coal mining and tunneling. High concentrations of mine gas and dry dust can lead to spontaneous fires underground. In order to minimise this risk, sections of a tunnel in which no work is being carried out by personnel are blanketed with nitrogen, for example. The reduction of the oxygen content makes it more difficult for fires and explosions to occur. Moreov


Nitrogen is widely used for pharmaceutics, the purity requirement varies from 99.5% to 99.9995%. Most pharmaceutical applications are blanketing, inerting and sparging. 1)Nitrogen as an inert gas Inerting with nitrogen is also used in the pharmaceutical industry to ensure product quality. The blanketing of storage and production containers with nitrogen prevents the pharmaceutical substances from coming in contac

Laser Cutting

Laser cutting is used to cut through a wide variety of materials such as metal. Laser cutting is the appropriate method particularly when high precision or speed are required. In this context, nitrogen serves as a flushing and cutting gas that is blown through the kerf at high pressure. In laser cutting the laser beam melts the material and high-pressure nitrogen forces the metal quickly to harden. As nitrogen has a

Food Packaging

Nitrogen is an efficient, cost-effective way to displace oxygen and moisture; it prevents spoilage, preserves freshness, maintains flavor, dramatically extends shelf life, and delivers a significantly improved product to the customer. 1) Injected nitrogen gas to beer  99.9%~99.99% purity nitrogen gas is a suitable gas that can be injected to beer;Compared with CO2 gas, nitrogen gas has favorable price and same


Nitrogen as an inert gas for optimizing soldering process Using nitrogen to inert the atmosphere during soldering processes has become a generally accepted practice in the electronic assembly industry. Regardless of whether the soldering process is wave, selective or reflow, nitrogen improves the process by enhancing the joint quality and minimising defects

Cutting and Welding

Oxygen can be used in many different processes for cutting and joining materials. Autogenous flame cutting and laser beam flame cutting are two methods for cutting metals. Oxygen is used as a fuel gas in both methods. The metal to be separated is heated to the ignition temperature. At this temperature, the metal forms a combustible liquid which continues to burn on its own if oxygen is added. The heat ensures that th


As the molten pig iron is not immediately usable in steel production. In order to further utilise the pig iron, the carbon content must first be reduced. With the aid of refinement, oxidative processes are initiated by adding oxygen. Such processes remove both carbon and other components, such as sulphur and phosphorus, from the pig iron. There are a range of special methods in this regard, including the converter st

Water Treatment

Sewage treatment is a process of removing contaminants from waste water. Injecting oxygen into your treatment basin dramatically increases bacteriums survival and regeneration. Regardless of the conditions, even in hot climates or summer months when O2 levels are at their lowest, and consumption at the highest, the aerobic bacterias will be well protected. So, our oxygen generator can provide steady flow of oxygen


Ozone (O3) is a three atomic molecule and is much less stable than diatomic oxygen (O2). It is highly reactive and it has a high level of energy. Ozone cannot be stored. Therefore many ozone generating systems use costly supplies of cylinder oxygen. Ozone can be produced either from air or oxygen. However, O2 is more closer than air, so using O2 as raw material is more energy efficiency. On the top of that, hig


Medical oxygen is for patient many times a matter of life and death. Therefore a reliable source of medical oxygen in hospital is essential. Hospitals Oxygen is usually distributed by hospital pipeline system. In the places where there is no pipeline system, oxygen generator can be supplemented with high pressure oxygen compressor with filling ramp and the hospitals can fill their own oxygen cylinders. Optio

Glass Industry

Oxygen in glass industry plays very important role and is commonly used to enhance combustion. The benefits are fuel saving due to improved furnace efficiency, increased flame temperature, reduced energy cost, reduced pollutants such as particles, NOx or CO2, improved glass quality and  etc. These benefits create a platform for production increase which is the most common motivation for using O2,so our PSA oxyge

Fish Farming

With the rising of fish products demand, more and more fish farmers use our oxygen generator to help them expand fish farming scale. Fish production can be increased as long as sufficient oxygen, fresh water and food are provided. Regulated fish farming reduces the potential negative impact on the environment due to oxygen depletion and ensures that fish do not suffer due to improper oxygen balance. The fish are