A106C seamless steel pipe strictly adheres to the standards of the American Society for Testing and Materials (ASTM) and the American Society of Mechanical Engineers (ASME), complying with ASTM A106/A106M and ASME SA106/SA106M specifications. Designed specifically for high-temperature and high-pressure applications, it is widely used in fluid conveying systems in boilers, power plants, oil refineries, and chemical industries. Its core advantage lies in its dual guarantee of material quality and mechanical properties:


A106C seamless steel pipe utilizes C, Mn, and Si as its components, with a carbon content of ≤0.35%, a manganese content of 0.29%-1.06%, and a silicon content ≥0.10%. The content of harmful elements such as phosphorus and sulfur is strictly limited (P ≤ 0.035%, S ≤ 0.35%). Furthermore, the total content of the five alloying elements (copper, nickel, chromium, molybdenum, and vanadium) is controlled (≤ 1.00%) to prevent material embrittlement. During the production process, for every 0.01% decrease in carbon content, the manganese content is permitted to increase by 0.06%, subject to a maximum limit of 1.35%, ensuring the material maintains excellent toughness and creep resistance even at high temperatures.


After hot rolling or cold drawing, A106C seamless steel pipe boasts a tensile strength of≥485MPa, a yield strength ≥275MPa, and an elongation ≥20%, stably withstanding high temperatures up to 450°C and high pressures. Its mechanical properties far exceed those of A106A (tensile strength ≥330MPa) and A106B (tensile strength ≥415MPa), and are similar to those of domestic Q345 seamless steel pipe (tensile strength 490-675MPa, yield strength ≥345MPa). However, through composition optimization and process control, it exhibits superior high-temperature stability.


From raw material inspection, smelting, and rolling to finished product testing, A106C seamless steel pipe undergoes 12 quality inspection procedures, including spectral analysis, hydrostatic testing, and ultrasonic testing, to ensure the absence of defects such as pores and slag inclusions. Material reports, mechanical property test reports, and third-party inspection certificates are provided to support customer re-inspections, truly fulfilling our dual commitment to "guaranteed quality and performance."