Q215 Steel Tube

Q215 steel pipe is a carbon structural steel (GB/700-1999), Q-yield, 215- is the minimum yield point (σs) value of this grade. This type of steel is generally smelted in a converter or open-hearth furnace, and the main raw materials are molten iron and scrap steel. The sulfur and phosphorus content in the steel is higher than that of high-quality carbon structural steel, generally sulfur ≤0.050%, phosphorus ≤0.045%.
The content of other alloying elements such as chromium, nickel, and copper brought into the steel by the raw materials generally does not exceed 0.30%. According to the composition and performance requirements, the grades of this type of steel include Q195, Q215A, B, Q235A, B, C, D, Q255A, B, Q275 and other steel grades. The main characteristics are high plasticity, toughness and weldability, good pressure processing performance, but low strength and bendable.
General welded pipes: General welded pipes are used to transport low-pressure fluids. Made of Q195A, Q215A, and Q235A steel. It can also be made of other low-carbon steels that are easy to weld. Steel pipes must undergo water pressure, bending, flattening and other tests, and have certain requirements for surface quality. Usually the delivery length is 4-10m, and it is often required to deliver in fixed length (or multiple lengths). The specifications of welded pipes are expressed in nominal diameters (mm or inches). The nominal diameter is different from the actual diameter. According to the specified wall thickness, welded pipes are divided into ordinary steel pipes and thickened steel pipes. Steel pipes are divided into threaded and non-threaded according to the form of pipe ends.

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