What is the material of Q690C pipe

What is the material of Q690C pipe

Q690C pipe is a kind of low alloy high-strength structural steel, is a kind of alloy seamless pipe in accordance with the standard GB/T8162, and the '690' in its grade represents that the yield strength of the steel is not less than 690MPa, and 'C' represents that its impact toughness grade is not less than 47J at a specific temperature. C' represents its impact toughness grade at a specific temperature, i.e., the V-notch impact work at 0°C is not less than 47 J. Because of its high strength and good toughness, this kind of steel is widely used in the fields of architectural structure, machinery manufacturing, automobile manufacturing and energy industry, especially in the environment that needs to withstand high loads and complex stresses.