無(wú)縫方管的各種材質(zhì) 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。20#、Q235B
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材質(zhì) Q235 Q345B C D E 材質(zhì)規(guī)格齊全 實(shí)體工廠 189 0152 2222 0510-83076068
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