Article List

• The nature and use of medical gases

  (1) OxygenThe molecular formula of oxygen is O2. It is a strong oxidant and combustion improver. When high-concentration oxygen encounters oil, it will undergo a strong oxidation reaction, generate high temperature, and even burn and explode. Therefore, it is listed as a Class B fire hazardous subst

  Industry knowledge July 25, 2019
• Type of welding gas

  Welding Gases, a gas industry term, has been rapidly developed due to its advantages of good welding quality, high efficiency, and easy automation. The welding shielding gas can be a unit gas or a binary or ternary mixture. The purpose of using welding protective gas is to improve the quality of the

  Information and drawings August 05, 2019
• Introduction to refrigerant types

  Refrigerant is a working substance that is continuously cyclically changed in a refrigeration system to achieve refrigeration, also called a working fluid. The refrigerant is vaporized in the evaporator to absorb the heat of the cold object and is cooled, and the heat is released into the surroundin

  Information and drawings May 10, 2019
• Refrigerant product

  Refrigerant, also known as refrigerant, refrigerant, and snow, is a medium used in various heat engines to complete energy conversion.These materials typically increase power with a reversible phase change, such as gas-liquid phase change. Such as steam in steam engines, snow in refrigerators, and s

  Information and drawings April 23, 2019
• How does a gas cylinder pressure reducing valve work?

  1. Working principle of gas cylinder pressure reducing valve:The high pressure chamber of the gas cylinder pressure reducing valve is connected to the cylinder, and the low pressure chamber is a gas outlet and leads to the use system. The indication of the high pressure gauge is the pressure of the

  Industry knowledge March 29, 2019
• Gas filling process and points

  First, the main points of permanent gas filling1. Professional training, certification, and compliance procedures2, wearing protective equipment, inspection equipment3. Review cylinders and check air tightness4, open the total valve, ready to inflate5, inspection when filling6, the discovery of the

  Information and drawings March 22, 2019
• Common classification of stainless steel

  Stainless steel is generally classified into three types according to metallographic structure: austenitic stainless steel, ferritic stainless steel, and martensitic stainless steel. On the basis of these three basic auspicious organizations, for the specific needs and purposes, dual phase steel, pr

  Information and drawings March 18, 2019
• Detailed explanation of the cylinder

  A cylinder is a type of pressure vessel. It is a re-inflatable mobile cylinder containing a compressed gas or high-pressure liquefied gas with a design pressure of 1-300kgf/cm2 and a volume of not more than 1m3. It is a kind of pressure vessel commonly used in civil, public welfare and industrial a

  Industry knowledge March 08, 2019
• Fire extinguisher type and scope of use

  First, the foam fire extinguisher1. At present, it is mainly chemical foam. In the future, air foam should be developed. The foam can cover the surface of the burning material to prevent air from entering. It is most suitable for fighting liquid fires, and cannot extinguish fires of water-soluble fl

  Information and drawings February 19, 2019
• The 2019 SEFIC Annual Meeting was held successfully

  Say goodbye to the unforgettable 2018, ushered in the new 2019, January 25, 2019, SEFIC held the company annual meeting.The conference kicked off with the wonderful and true New Year's message from Mr. Michael, the company's general manager. At this annual meeting, SEFIC employees created their own

  Corporate news January 29, 2019