| 27 |
| Five elements of stainless steel metal hose selection |
The main material of stainless steel metal hose is 301 stainless steel and 304 stainless steel. It is an important part of modern industry. Wire and cable protection pipe. Civil stainless steel metal hose is more used in bathroom and kitchen water pipes and natural gas pipes. 150mm. Small diameter stainless steel metal hose (inner diameter 3mm-25mm) is mainly used for the protection of the sensor line and industrial sensor line protection of precision optical rulers. Stainless steel metal hose structure does not ...
| 30 |
| The basic method for rust removal of high pressure boiler steel pipe is as follows |
Basic methods of rust removal for high pressure boiler steel pipes: (1) Cleaning: Use solvents and emulsions to clean the surface of high pressure boiler steel pipes to remove oil, grease, dust, lubricants and similar organics, but it cannot remove the surface of high pressure boiler steel pipes. Rust, oxide scale, welding flux, etc., so it is only used as an auxiliary means in anti-corrosion production. (2) Tool rust removal: mainly use tools such as wire brushes to polish the surface of high-pressure boiler steel pipes, which can remove loose or raised oxide scale, iron ...
| 25 |
| Manufacturing and use of high-pressure boiler tubes |
(1) Production and manufacturing methods: ①General boiler tubes are used below 450 ° C. Domestic tubes are mainly made of hot-rolled or cold-drawn tubes of No. 10 and No. 20 carbon steel. ② High-pressure boiler tubes are often exposed to high temperature and pressure when they are used. The tubes will oxidize and corrode under the action of high-temperature flue gas and water vapor. Steel pipes are required to have high durability, high resistance to oxidation and corrosion, and good structural stability. (2) Uses: ①General boiler tubes are mainly used to make water-cooled walls ...
| 18 |
| Material introduction of alloy steel pipe |
The hardness and hardness of alloy pipes are relatively high, and sometimes they are nearly complete, and they are generally used in the construction and pipeline industries, which have made greater achievements for the economic establishment of our country. When purchasing alloy tubes, you must pay attention to its material. What are the materials of alloy tubes? An alloy is simply information about the composition of more than one metal element. Common alloy tubes are iron alloys, perhaps iron chromium alloys, or iron nickel alloys (expensive). Others are aluminum alloy (light), copper alloy (good thermal conductivity ...
| 13 |
| Uses of alloy steel pipes |
The seamless design of the alloy steel pipe ensures that no leakage occurs during the transportation of the pipeline. It is convenient to transport oil or natural gas. The equipment process of this type of pipeline data practice is also very similar. Simple, simple steps can be easily done, alloy pipes are often well received in the market, and it has become a kind of pipeline data for the surge in demand in the market, and the extent of their manufacturers' consumption scope is also expanding from time to time. When it comes to channel information, I believe a lot of people about ...
| 05 |
| Q345B seamless pipe mechanical properties |
Q345B seamless pipe mechanical properties: tensile strength: 490-675 yield strength: ≥345 elongation: ≥21 Q345A seamless pipe mechanical properties: tensile strength: 490-675 yield strength: ≥345 elongation: ≥21 Q345C seamless pipe mechanical properties: tensile strength: 49 ...
| 31 |
| Brief introduction of Q345B seamless steel pipe |
There are many classification methods. According to the manufacturing process, there are: hot-rolled seamless tubes and cold-rolled seamless tubes. According to their uses, they are: seamless steel tubes for general construction, seamless steel tubes for fluid delivery, and seamless for medium and low pressure boilers. Steel tubes, seamless steel tubes for high-pressure boilers, divided by material: high-quality carbon structural steel seamless steel tubes, low-alloy structural steel seamless steel tubes, alloy steel seamless steel tubes. Seamless steel tubes are very common and can be used to process into machinery Parts, used to transport liquid or gas, to actuate bearings, to build ...
| twenty two |
| Classification of seamless steel tubes |
1. According to different production methods, it is divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe, extruded pipe, pipe jack, etc., all have their own process regulations. 2. According to the material, there are ordinary and high-quality carbon structural steel (Q215-A ～ Q275-A and 10-50 steel), low-alloy steel (09MnV, 16Mn, etc.), alloy steel, stainless acid-resistant steel, etc. 3. Divided into general purpose (for water transmission, gas pipelines and structural parts, mechanical parts) and special purpose (for boilers, geology ...
| 14 |
| What is G in high pressure boiler tube 20G |
20G high pressure boiler tube is a type of boiler tube, which belongs to the category of seamless steel tubes. 20G high pressure boiler tubes are often in high temperature and high pressure conditions when used. The tubes will oxidize and corrode under the action of high temperature flue gas and water vapor. Steel pipes are required to have high durability, high resistance to oxidation and corrosion, and good structural stability. 20G high pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air ducts, and main steam tubes for high pressure and ultra high pressure boilers. G is Chinese spelling ...
| 05 |
| Care and maintenance of seamless steel tubes |
The knowledge of seamless steel tubes Many people have learned more about it, but many people only know about the consumption, sales, use, etc. of seamless steel tubes, but there is another part that is very important, that is, Yiyanghe Maintenance! When the production of seamless steel pipes is stopped, the pickling process of steel pipes will be touched. As for the staff, what are the issues to be aware of when stopping the pickling of seamless steel pipes? First, it is necessary to wear labor maintenance supplies before pickling. turn off...
| 27 |
| How to choose stainless steel pipe |
First, before choosing a stainless steel pipe, it is necessary to consider the use of the stainless steel pipe and the operating environment. Second, the material must be up to standard when selecting steel pipes. Take 304 material as an example: 1. It can be tested with acid reagents. After 30 seconds, the material 304 does not change color, and 201 turns black. 2. Carefully observe whether the surface of the pipe can be stamped with the material "304" and obtain the manufacturer's certificate As proof; 3. Analysis from the price, if 304 materials ...
| twenty one |
| The specifications of steel pipes selected by different industries are also different. |
The steel pipe operation has gone through, after so many years of opening, the variety of steel pipes has now become more and more. Due to different operations, the characteristics of the operation are taken into account when selecting the steel pipe to be used. For example, the environment in which steel pipes are used, and the functions required of steel pipes, etc. Therefore, in the past, the types of steel pipes selected for different operations were very different. & nbs ...
| 19 |
| How to determine the rolling temperature and cooling time of fine seamless steel tubes |
It is important for the material to make the structure and composition of the precision seamless steel pipe uniform, which is not the same because the rolling temperature and cooling time of each section of the hot rolled pipe material are not the same. Atomic activity intensifies at high temperatures, and the chemical composition is in a uniform state. A uniform single-phase structure is obtained after rapid cooling. Eliminates work hardening to facilitate ...
| 12 |
| Difference between ordinary cold drawn seamless steel pipe and finished rolled seamless steel pipe |
First of all, the contents of c, Si, Mn, P, and S of 20 # and 45 # steel are different. 45 is higher than 20 # steel. You can buy this steel just to look at the manual. 20 # steel has good hardenability, low hardenability, good plasticity, resistance and weldability, and better resistance after hot rolling or normalizing. It can be used to make less important small and medium carburizing, carbonitriding parts, forgings Such as lever shafts, transmission shift forks, gears, heavy machinery drawbars, shackles ...
| 29 |
| Do you know that alloy steel pipes are expensive |
The alloy is composed of two or more than two kinds of metal materials. The hardness of the alloy material is generally greater than that of its constituent metals and the melting point is lower than that of the constituent metals. For alloy steel pipes, the selection of the original materials is very important. The most important part of the performance is derived from the composition of the data, and in the process of alloy steel pipe processing, there will be certain difficulties. ...
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