Company News

• Performance and material analysis of SA285 Gr.C boiler steel plate

  2024 / 09 / 23

  Performance and material analysis of SA285 Gr.C boiler steel plate 1, SA285GrC steel plate introduction: SA285GrC is a pressure vessel with medium and low strength carbon steel plate, belongs to the American standard boiler container steel plate, mainly used for the production of fixed boilers, hull boilers and other important boiler accessories. 2, SA285GrC steel plate implementation standard: SA-285/SA285M(equivalent to ASTM standard A285/A285M) 3, SA285GrC steel plate delivery status: usually in the rolling state supply, you can also normalize or stress relief treatment or normalizing plus stress relief treatment status order. 4, SA285GrC steel plate chemical composition:   C: ≤0.28   Mn: ≤0.90   P: ≤0.025   S: ≤0.025   5, SA285GrC steel plate mechanical properties   Tensile strength: 380-515MPa   Yield strength: ≥205MPa  

• Performance analysis of SA333 Gr6 low-temperature seamless steel pipe

  2024 / 08 / 12

  Performance analysis of SA333 Gr6 low-temperature seamless steel pipe        ASMESA333-6 seamless steel pipe, as the American standard seamless steel pipe for low-temperature pipes, is favored by people in the industry for its excellent performance and wide range of applications. It is mainly used in low-temperature pressure vessel pipelines and low-temperature heat exchanger pipelines, etc., to meet the strict requirements of seamless steel pipes in extremely low temperature environments.        Product material standard: ASME SA-333/SA-333M seamless welded steel pipe specification for low temperature and other purposes with notched toughness requirements, the product shall comply with the requirements of TSG D7002 pressure pipeline element type test rules.        ASMESA333-6 seamless steel pipe chemical composition: carbon: ≤0.30, Silicon: ≥0.10, manganese: 0.29~1.06, phosphorus: ≤0.025, sulfur: ≤0.025, chromium: ≤0.030, nickel: ≤0.040, molybdenum: ≤0.12, copper: ≤0.40, vanadium: ≤0.08, niobium; ≤0.02.        SA333-6 low-temperature seamless pipe standard specific requirements for mechanical properties: Tensile strength: minimum 415 MPa, Yield strength: minimum 240 MPa, Elongation: minimum 30%, commonly used: Impact test temperature -45℃, the above requirements can ensure the normal use of the pipeline in

• Performance analysis of 20Cr4 seamless steel pipe

  2024 / 08 / 05

  Performance analysis of 20Cr4 seamless steel pipe 20Cr seamless steel pipe is a seamless steel pipe made of 20Cr alloy steel with the following characteristics and applications: Chemical composition: The chemical composition of 20Cr seamless steel pipe mainly includes iron, carbon, chromium and other elements, of which the content of silicon is usually between 0.17 and 0.37%. Welding performance: The weldability of 20Cr seamless steel pipe is good, and there is generally no need for heat treatment after welding. However, if the thickness of the steel pipe is greater than 15mm, it is necessary to preheat to 100~150℃ before welding to ensure the welding quality. Mechanical properties: 20Cr seamless steel pipe has high strength and hardenability, its tensile strength σb (MPa) ≥835, yield strength σs (MPa) ≥540, elongation δ5 (%) ≥10, section shrinkage ψ (%) ≥40. In addition, it also has good low-temperature impact toughness and low tempering brittleness. Manufacturing process: The manufacturing process of 20Cr seamless steel pipe includes raw material selection, steelmaking, casting billet, perforation, hot rolling, cold drawing, straightening and other processes. Among them, the cold drawing process is a key step to ensure the dimensional accuracy and surface finish of the steel pipe.