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Common steel bar specifications and models
Ordinary steel bars
1. HPB235: The diameter is 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50, which represents the order of magnitude of the tensile strength of the steel bar is 235.
2. HRB335: The diameter is 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50, which represents the order of magnitude of the tensile strength of the steel bar is 335.
3. HRB400: The diameter is 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50, 60, which represents the order of magnitude of the tensile strength of the steel bar is 400.
4. HRB500: The diameter is 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50, 60, which represents the tensile strength of the steel bar of the order of 500.
Threaded steel bars
1. l6, l8, l0, l2, l4, l6, l8, 20, 22, 25;
2. l8-T, 22-T, 25-T, 28-T, 32-T, 36-T, represent the order of magnitude of the tensile strength of ribbed threaded steel;
3. l6, l8, 20, 22, and 25 represent the order of magnitude of the tensile strength of toothed stiffeners.
The above are common steel bar specifications and models. Choose different steel bar specifications and models according to different project requirements. When using steel bars, they need to be processed and installed according to requirements to ensure their safety and reliability.
Classification of stainless steel pipes1. Classification by production method:
(1) Seamless tubes - cold drawn tubes, extruded tubes, cold rolled tubes.
(2) Welded pipe:
(a) Classification by process - gas shielded welded pipe, arc welded pipe, resistance welded pipe (high frequency, low frequency).
(b) According to welding seam - straight seam welded pipe, spiral welded pipe.
2. Classification according to cross-sectional shape: (1) circular steel pipe; (2) rectangular pipe.
Spiral steel pipe stacking requirements1. The principle requirement for stacking spiral steel pipes is to stack them according to types and specifications on the premise of ensuring stable stacking and ensuring safety. Different types of materials should be stacked separately to prevent confusion and mutual erosion;
Difference Between Straight Seam Steel Pipe and Spiral Steel Pipe
Advantages of Using Carbon Steel in ConstructionSteel is an alloy metal, which means it’s a combination of several types of elements. In the case of steel, this is a combination of iron, carbon, and trace elements. It has a number of advantages for construction applications due to the fact that it’s fairly inexpensive to manufacture and has a very high tensile strength.
What determines the type of steel is the ratio of elements used to produce it, and it’s the magic formula of the carbon steel alloy created that makes it preferred for many projects. While there are thousands of different types of steel, these types are generally bucketed into four categories: carbon steel, alloy steel, stainless steel, and tool steel.- Anti-corrosion steel pipe classificationPN8710 anti-corrosion
When there are many types of corrosive media in steel pipes, such as acids, alkalis, salts, oxidants and water vapor, the coating must be chemically inert and resistant to acid, alkali and salt corrosion. The coating film should have a dense structure, good waterproof permeability and strong adhesion. , tough and plump. In this case, IPN8710 anti-corrosion is suitable. 
Global crude steel production fell 4.3% year-on-year in MarchOn April 23, the World Steel Association (WSA) released global crude steel production data for March. In March, crude steel output in the world's 71 countries and regions included in the statistics was 161.2 million tons, a year-on-year decrease of 4.3%. In the first quarter of this year, crude steel output in the world's 71 countries and regions included in the statistics was 469 million tons, a year-on-year increase of 0.5%.
