Q195 Square Steel Pipes

In the manufacturing process of Q195 square steel pipes, it is crucial to control the chemical composition, including carbon (C), silicon (Si), manganese (Mn), phosphorus (P), and sulfur (S) levels, to meet the specified standards. The process involves careful oxygen control during the steelmaking phase, with specific attention to the oxygen lance position and pressure. Slag management is also key, with a focus on alkalinity and magnesium oxide content. Deoxidation and alloying are critical steps, where the addition of elements like silicon, manganese, and aluminum are carefully measured to ensure the desired mechanical properties. The final product must meet stringent quality control standards, including tensile strength and elongation, to ensure performance and safety.Q195 steel pipes are typically subjected to heat treatment processes such as normalization and annealing to enhance their mechanical properties. Normalization involves heating the steel to a certain temperature, holding it for a period, and then cooling it in air, which can improve the's hardness and strength. Annealing, on the other hand, involves heating the steel to a higher temperature, holding it, and then cooling it slowly, typically in a furnace, which helps to reduce internal stresses and enhance ductility and toughness. These processes are critical in determining the final properties of the Q195 steel pipes, such as their yield strength, tensile strength, and elongation. The specific temperatures and times for these treatments can vary based on the desired outcomes and are typically determined through material testing and process optimization.

Why choose us?

1. ISO, BSI, FPC, UL system.
2. Price: Reasonable.
3. TUV, API, BV audited company.
4. Experience: 20 years focus on quality.
5. Strength: The company that can produce 10 million tons welded pipe exclusively in the world. More than 12,600,000 tons and 190,000 tons (Annual production and export volume)

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