Q235/S235JR/A36/SS400 Carbon Steel Square Pipe
Q275/S275JR/SM490 Carbon Steel Rectangular Pipe
Q345/S355JR/Gr.50 Carbon Steel Rectangular Pipe
Q195/A283/BS 970-1 Carbon Steel Rectangular Pipe
Q215/A573 Carbon Steel Rectangular Pipe
Q255/SS400 Carbon Steel Square Pipe
10#/DC01/A1010 Carbon Steel Square Pipe
25#/C25E/A1025 Carbon Steel Square Pipe
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