Shanghai Iron Horse Industry Co., Ltd. supply low-alloy square tube, low-alloy rectangular tube, Q345B square tube, Q345B rectangular pipe, galvanized pipe, galvanized rectangular tube, square tube length custom processing. Square tube 20 * 20 * 25 * 25 square tube 0.6-2.0 * 0.6-2.0 square tube 30 * 30 * 40 * 40 square tube 0.6-3.0 * 1.0-4.0 square tube 50 * 50 * 60 * 60 square tube 2.0-5.0 * 2.0-6.0 square tube 70 * 70 * 80 * 80 square tube 2.0-6.0 * 2.0-8.0 square tube 90 * 90 * 4.0-5.0 square tube 100 * 100 * 120 * 120 square tube 2.0-10.0 3.0-12.0 party * tube 140 * 140 * 150 * 4.0 to 12.0 square tube square tube 150 * 4.0 to 12.0 4.0 to 12.0 160 * 160 * 160 * 160 * square tube 4.0 to 12.0