Types of flanges (1) flange of pressure vessel is divided into general flange and reverse flange according to overall structure. (2) according to the layout of gaskets, it can be divided into two categories: narrow flange and wide flange. A) Narrow flange refers to the gasket contact surface located in the flange bolt hole around […]
Detailed explanation of heat exchanger tube sheet
Shell-and-tube heat exchangers are widely used in industrial plants. Different structures can be selected according to different operating conditions such as temperature, pressure and medium, such as fixed tubesheet heat exchangers (or fixed heat exchangers), floating-head heat exchangers, filled-tube heat exchangers, U-tube heat exchangers and so on. Tube sheet is one of the main parts of […]
Material selection for expansion joint of bellows compensator
The bellows compensator expansion joint is widely used in many industries. In addition to considering good compensation capacity, reliability is the key to the bellows compensator expansion joint. However, reliability is ensured through multiple links such as design and manufacturing. Any negligence of any link will lead to the reduction or even failure of the life of […]
The difference between stainless steel 304, 304L, 316, 316L
What is the meaning of “steel” and “iron”, what are the characteristics, and what is the relationship between us, 304, 304L, 316, 316L, which we usually say, and what is the difference between them? Steel: A material containing iron as the main element and having a carbon content of generally less than 2% and containing […]
2205 welding process considerations
1 The second-generation duplex stainless steel is generally called standard duplex stainless steel. Its composition is ultra-low carbon and nitrogen. Its typical composition is 22% cr + 5% ni + 0.17% n, compared with the first generation duplex stainless steel. 2205 further increases the nitrogen content and enhances the stress corrosion resistance and pitting resistance in an […]
How many valves are there? In which areas is the application?
At present, China’s valve industry has not only become the world’s number one in six: the world’s production area, the world’s first equipment level, the world’s largest production capacity, the world’s first valve production, the world’s first market demand, and the world’s largest overcapacity. Moreover, it is more than four and three fast: the largest number of […]
Types, classification, quotation and characteristics of commonly used stainless steel pipes
Stainless steel pipe is a kind of hollow long steel. which is used as a pipeline for conveying fluids. such as oil. natural gas. water. gas. steam. etc. In addition. when the bending and torsional strength are the same. the weight is light. so Widely used in the manufacture of mechanical parts and engineering structures. Also […]
Advantages and disadvantages of stainless steel bellows
The stainless steel bellow is installed as a flexible pressure-resistant pipe in a liquid (gas) conveying system to compensate for the connection of pipes or machines and equipment. So what are the advantages of this stainless steel bellows to replace the rubber tube? The following is a brief introduction to the advantages and disadvantages of stainless steel […]
What happens if bolts and screws are rusted?
Screw is the most common type of fixing device in daily life. Usually it is used for fastening. Of course, it is hoped that it will be tightened, but it also adds some trouble to the subsequent maintenance technicians. When the screw is severely rusted, it is difficult to use a wrench to screw it down. […]
Characteristics, welding technology and requirements of stainless steel pipe fittings
Stainless steel pipe fittings are one kind of pipe fittings. They are made of stainless steel, so they are called stainless steel pipe fittings. They include: stainless steel elbows, stainless steel tees, stainless steel crosses, stainless steel reducers, stainless steel caps, etc., according to the coupling method. It is divided into four types: socket type stainless […]
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