Natural gas refers to all gases in nature, which are formed in the atmosphere, hydrosphere and lithosphere such as oilfield gas, mud volcanic gas, coalbed methane and biogas.
According to the working principle, the shield machine is generally divided into the manual shield machine, compression shield machine, semi-mechanical shield machine (partial pressure and compressed air pressure), mechanical shield machine including open cutting shield machine, air pressure type shield machine, slurry shield machine, earth pressure balance shield machine, hybrid shield machine and shaped shield machine.
Metallurgy is the process of extracting metals and metal compounds from ores and turns them into metal materials with special properties by using different methods.
Coal mining machinery refers to machines used in mining, transportation and protection of mine, coal preparation and other processes. Due to its professional characteristics, coal mining machines specialize in exploitation unlike other mining machines.
Household Electrical Appliance (HEA) mainly refers to electrical and electronic equipment used in homes and similar places, which is also known as civil electric appliances or household electrical appliances.
Power equipment mainly includes power generation equipment and power supply equipment. Power generation equipment consists of utility boilers, gas turbines, steam turbines, generators, transformers, etc. The power supply equipment includes transmission lines of various voltage levels, mutual inductors, contactors, etc.
8. Guide Ring & Guide Strip
The main function of the guide ring and the guide belt is to provide guidance and support for the pistons of the hydraulic cylinders and piston rods. It absorbs radial loads. It also prevents metal contact between moving parts of the cylinder. Compared with the traditional metal guide elements, the non-metallic guide ring has the following obvious advantages: low production cost, high bearing capacity, elimination of local stress concentration, good wear resistance and long service life. Pairing metals and plastics eliminates mutual wear and friction and absorbs and attenuates mechanical vibrations. The wiping effect is good. It can also absorb foreign fine particles, making hardware selection more convenient. It eliminates fluid dynamics in the guide with simple closed grooves and is easy to install and has low maintenance costs. DSH seals are manufactured with a variety of modified PTFE guide strips, resin guide strips and various guide rings with highly stable quality and are highly recognized by our customers.
9. Intelligent Manufacturing & New Energy
New energy, also known as unconventional energy, refers to various forms of energy other than traditional energy sources. It refers to energy sources such as solar energy, geothermal energy, wind energy, ocean energy, biomass energy and nuclear fusion energy that have just begun to be discovered or are being actively researched and not yet promoted.
Due to its special chemical composition, the new refrigerant severely erodes the rubber seals used in the past, resulting in excessive expansion of their volume and their inability to effectively seal the components. After repeated trials, hydrogenated nitrile rubber has become the best rubber material for new refrigerant seals.
11. Aerospace & Military Industry
Space flight refers to the general term for entering, exploring, developing, and utilizing space (ie, the space outside the earth's atmosphere, also known as outer space) and various activities outside the earth.
Engineering machinery refers to the general term used in engineering construction and is widely used in various engineering fields such as construction, water conservancy, electric power, roads, mines, ports and national defense.
13. Hydraulic & Pneumatic Industry
Hydraulic pressure is requently mentioned in the mechanical and electromechanical industry.
Hydraulics pressure can be used to transfer power and can also be used for control. When used for transmission, it is called hydraulic transmission. If used for control, it is called hydraulic control.
Food machinery refers to mechanical equipment and devices that are used to process food materials into food (or semi-finished products). Seals in food machinery are usually in direct or indirect contact with food, so these seals must be clean and safe, and their materials used must meet food grade requirements.
In August 2013, our first food-grade series of sealing products were inspected by Guangdong Provincial Quality Supervision Food Inspection Bureau and obtained excellent performance certificates. Moreover, their various materials are certified to be food grade compliant. Our company's food-grade materials can be applied to a variety of food machinery.
In a fluid piping system, the valve is a control element. Its main function is to isolate equipment and piping, regulate flow, prevent backflow, regulate and discharge pressure.
It can be used to control the flow of various fluids, such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. The series of valve pipe sealing products produced by DSH Seals have been exported to Europe, the United States, the Middle East market in large quantities and have been well received by the majority of high-end customers.