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Q345 seamless alloy steel pipe

Categories Steel Pipes & Tubes
Place of Origin: Cangzhou, China (Mainland)
Packaging Details: In bundles,in bulk,plastic waterproof package for Q345 seamless alloy steel pipe
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    Q345 seamless alloy steel pipe

    Q345 seamless alloy steel pipe

    (1)Normal size:


    sizesouter diameter(mm)thickness(mm)tolerance(mm)length(m)
    round pipe20-2730.3-50±0.33,6,8,12,etc
    rectangular pipe20*30-150*2500.3-12±0.33,6,8,12,etc
    square pipe20*20-200*2000.3-12±0.33,6,8,12,etc

    (2) Chemical element:


    GradeCSiMnPSAl
    Q345A≤0.20≤0.50≤1.70≤0.035≤0.035Al≥0.015
    Q345B≤0.20≤0.50≤1.70≤0.035≤0.035Al≥0.015
    Q345C≤0.20≤0.50≤1.70≤0.030≤0.030Al≥0.015
    Q345D≤0.18≤0.50≤1.70≤0.030≤0.025Al≥0.015
    Q345E≤0.18≤0.50≤1.70P≤0.025≤0.020Al≥0.015
    GradeTiCrNiMoNbV
    Q345A≤0.20≤0.30≤0.012≤0.10≤0.07≤0.15
    Q345B≤0.20≤0.30≤0.012≤0.10≤0.07≤0.15
    Q345C≤0.20≤0.30≤0.012≤0.10≤0.07≤0.15
    Q345D≤0.20≤0.30≤0.012≤0.10≤0.07≤0.15
    Q345E≤0.20≤0.30≤0.012≤0.10≤0.07≤0.15

    (3) Mechanical properties


    Annealing hardnessCold pull hardnessPreheating temperatureQuenching temperatureHolding timeHardening mediumTemper temperatureAfter tempering hardness
    HBSHBSmin≥HRC
       salt-bath furnacecontrolled atmosphere furnace   
    235262788119112045~15air cooling52260


    Application
    (1) For liquid transportation:water supply,water drainage,sewage treatment,engineering,transmission of mud,sea water.

    (2) For gas:gas,steam,liquefied petroleum gas.

    (3) For structure:piling pipe,bridge,Dock,road,building structure pipe,Marine piling pipe.


    Company Information

    Operation Philosophy
    Create value for customers, and achieve a win-win situation.
    Corporation values
    Integrity, innovation, team work and high-quality.


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