Search results for keyword: deepening
New technology features of world CNC machine tools
Computerized numerical control (CNC) machines have been around since World War II and have experienced a tremendous surge in both advancements and popularity. With a sophisticated software platform, control system, and robotics system, CNC machines are now the prominent feature of today’s manufac......
1184 
Sophia
Alloy structural steel (GB 3077-88) (4)
The development process of alloy structural steel (GB 3077-88)
Alloy structural steel is one of the important structural materials in engineering and plays an important role in the development of Chinas steel industry. In 1988, an alloy structural steel variety was added, and it was also the basi......
model
The Importance of Technology in Education
Education is an important tool in the modern world, with knowledge being one of the most important commodities. Technology has drastically changed the way people interact with each other, the way they work, and the way to access information. Technology ha......
Comparison table of commonly used steel grades at home and abroad (7)
Steel Grade Comparison Table
China GB ：USA ASTM ：Germany DIN ：UK BS ：France NF
Q235A：A283M-A ：SS14,14,00 ：S235JR ：St37-2：E24-2
Q235B：A283M-B ：E24-2 ：St37-2 ：43B：AE235B
Q235C：A283M-C ：14,14,01 ：S235JO ：RSt37-2：E24-3
Q235D：A283M-D ：44,44,01 ：S235J2G3 ：St44-2 ：E28-2
Q25......
Application prospect of high-efficiency and high-grade silicon steel
Introduction
High efficient, high grade silicon steel is widely used in electronic components and electric appliances, such as motors, generators, transformers, ballasts, etc. Compared with the traditional silicon steel material, this has obvious advantages in terms of cost, performance, and envi......
Weight and allowable deviation of hot-rolled ribbed steel bars (GB 1499-1998)
Hot-rolled Ribbed Steel Bars Weight and Allowable Deviation (GB 1499-1998)
Hot-rolled ribbed steel bar is the main reinforcing bar used in the reinforced concrete structure of China. With the continuous development of society and the deepening of engineering construction, the variety, specificati......
Changes and Standard Levels of Alloy Structural Steel Standards
Evolution of Low-Alloy Structural Steel Standards and Levels
L-alloy structural steel is an alloy of alloys, composed of alloying elements such as carbon, chromium, manganese and vanadium, among others. Low-alloy structural steel is gaining popularity amongst the metal working industry due to its......
Deep pit mine ventilation
The open pit mining has been an effective way to produce minerals all over the world. Open pit mining is an extraction of minerals or rocks from surface pits by means of open pits which are dug into the earth’s surface. It is primarily used to get access to ore deposits, from which metals and oth......
medium crushing
Year in Review
This year has been a year of contrasts, challenge and success with lockdowns and restrictions to control the spread of the global pandemic that has engulfed the world. In some places, the response to the pandemic has been aided by advanced technology with hot spot testing being use......
Foundation reinforcement and replacement
Reinforcements and replacements of foundations
Reinforcement is one of the most important preventive measures for maintaining the safety and stability of buildings, bridges, civil engineering structures and foundations.
Reinforcement of foundations has many advantages:
1. Strengthen the infrast......
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