Special-shaped seamless pipe is the general term of seamless pipe with other cross-section shapes except circular pipe. According to the different shapes and sizes of steel pipe sections, it can be divided into equal wall thickness special-shaped seamless pipe (code D), unequal wall thickness special-shaped seamless pipe (code BD), variable diameter special-shaped seamless pipe (code BJ). A572 Grade 65 low alloy steel. Special seamless pipe is widely used in all kinds of structural parts, tools and mechanical parts. Compared with the round pipe, the special-shaped pipe has larger inertia moment and section modulus, larger bending and torsion resistance, which can greatly reduce the structure weight and save steel.
Q420FT is a kind of steel plate for wind power tower, and its trademarks are Q420FTC, Q420FTD, Q420FTE AND Q420FTF. When the A572 Grade 65 low alloy steel, Q420FT steel plate is required to have the function of thickness direction, other symbols Z15, Z25 and Z35 representing the function level of thickness direction shall be added after the trademark of the above rules.
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Compared with thick steel plates, A572 Grade 65 low alloy steel, thin steel plates have many obvious advantages in steel plate processing and use. It is precisely these advantages of thin steel plates that make them more and more popular in various industries. First, compared to those thicker steel plate materials, thin steel plates are generally thinner in thickness. Thin steel plates themselves are lighter and thinner, and their weight is lighter, which is very convenient for handling during construction and transportation. It can save some storage and transportation space.
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