ERW Pipes and Tubes Q235 ERW Tube High Frequency Black Welded Steel Pipe

ERW Pipes and Tubes Q235 ERW tube high frequency black welded steel pipe ERW Pipes Material Q235 Q235A C0.14~0.22% Mn0.30~0.65Si≤0.30S≤0.050P≤0.045 Q235B C0.12~0.20% Mn0.30~0.670Si≤0.30S≤0.045P≤0.045 Q235C C≤0.18% Mn0.35~0.80Si≤0.30S≤0.040P≤0.040 ERW Tubes Q235 ERW tube Black Welded Steel Pipe...