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    Product

    10# Galvanized Square Tube


    Implementation Standards

    Seamless pipe: GB/30942000, weld pipe: GB/67282002



    Scope of Application


    The galvanized square tube has been galvanized on the square tube, so the application scope of the galvanized square tube has been greatly expanded than the square tube. It is mainly used for curtain wall, building, machinery manufacturing, steel construction projects, shipbuilding, solar powered bracket, steel structure engineering, electric power engineering, power plant, agriculture and chemical machinery, glass curtain wall, vehicle chassis, airport and so on.



    Chemical Composition


    Q345A:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.035,S≤0.035;
    Q345B:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.035,S≤0.035;
    Q345C:C≤0.20,Mn ≤1.70,Si≤0.50,P≤0.030,S≤0.030,Al≥0.015;
    Q345D:C≤0.18,Mn ≤1.70,Si≤0.50,P≤0.030,S≤0.025,Al≥0.015;
    Q345E:C≤0.18,Mn ≤1.70,Si≤0.50,P≤0.025,S≤0.020,Al≥0.015;
    Q345A、B、C、D、E均含Nb≤0.07,V≤0.15,Ti≤0.20,Cr≤0.30,N≤0.012,Mo≤0.10。


    Mechanical Property

    Plain Carbon Steel
    Tensile strength: 375~500 Q235, yield strength is more than 235, the elongation rate: = 25
    No. 20: 390 to 530, the tensile strength yield strength is more than 235, the elongation rate: = 20


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