Cangzhou Yantai Steel Pipe Co., Ltd. is a professional manufacturer and seller of square tubes, rectangular tubes, special-shaped square tubes, large-diameter square tubes, thick walled square tubes, seamless square tubes, and hot-dip galvanized square tubes. 

The specifications of square tubes and rectangular tubes produced have a full size of 20mm * 20mm--600mm * 600mm square tubes, 20 mm* 30mm--400mm * 800mm square tubes, with a thickness of 0.6mm --28mm and over 2800 specifications;

 Material: Q235, Q345B, 20 #, 45 #, seamless pipe, alloy steel;