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Q345D seamless steel pipe

Q345D seamless steel pipe

Product description:
    Q345A,Q345B,Q345C,Q345D,Q345E this is the distinction between quality grade, from a to e is gradually increasing, mainly due to phosphorus and sulfur content of micro-elements impact different temperature differences, represents the impact of temperature of different tubes chemical composition and mechanical properties.
Q345A level is not shock; Level Q345B, 20 degrees temperature shocks; Q345C level, the impact is 0 degrees; Q345D level, the impact is-20 degrees; Q345E level, the impact is-40 degrees. Impact of different temperature, shock value is different.
Q yield strength of not less than 345Mp the quality level which contains impurities (carbon, manganese, Silicon, sulfur, and phosphorus. Impurities in the steel), A,B,C,D longer less impurities BACK

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