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产品展示

 
产品名称:Q355B方管  点击次数:1212
 
 

产品详细信息

方管按材质分: 普碳钢方管、低合金方管。普碳钢分为:Q195、Q215、Q235、SS400、20#钢、45#钢等;低合金钢分为Q345ABCDE、16Mn、A500  Q390、ST52-3等。
化学成分;
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,Ni≤0.012,Mo≤0.10。
Q355化学成分:C:≤0.24,Si:≤0.55,Mn:≤1.60,P:≤0.035,S:≤0.035,Cr:≤ 0.30,Ni:≤0.30,Cu:≤0.40。
Q235A级含C0.14~0.22% Mn0.30~0.65Si≤0.30S≤0.050P≤0.045
Q235B级含C0.12~0.20% Mn0.30~0.670Si≤0.30S≤0.045P≤0.045
Q235C级含C≤0.18% Mn0.35~0.80Si≤0.30S≤0.040P≤0.040
Q235D级含C≤0.17% Mn0.35~0.80Si≤0.35S≤0.040P≤0.035