Steel pipe knowledge: T91 steel pipe is a kind of steel pipe

4 or more welding processes have been applied to 200 MW and 300 MW boiler manufacturing practices with satisfactory results and greater economic benefits. Steel pipe is a long strip steel with a hollow section and no joints around it. The steel pipe has a hollow cross-section and is used in a large amount as a pipe for conveying fluids, such as pipes for transporting petroleum, natural gas, coal gas, water, and certain solid materials. Compared with solid steel such as round steel, steel pipes have a lighter weight when subjected to the same flexural and torsional strength, and are economical cross-section steels. They are widely used in the manufacture of structural and mechanical parts such as oil drill pipes, automobile transmission shafts, and bicycles. Frames and steel scaffolds used in construction. The manufacture of ring-shaped parts from steel tubes can increase material utilization, simplify the manufacturing process, save material and processing man-hours, such as rolling bearing rings, jack sleeves, etc. Currently, steel tubes have been widely used for manufacturing. The steel pipe is also an indispensable material for various conventional weapons. The barrels, barrels, etc. must be made of steel pipes. Steel tubes can be divided into round tubes and shaped tubes according to the shape of the cross-sectional area. Since the circle area is the largest under the condition of the same circumference, more fluid can be transported by the cirarcul tube. In addition, when the ring section is subjected to internal or external radial pressure, the force is more uniform. Therefore, most steel pipes are round pipes.

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