... :20*20mm-150*150mm6)Certification:ISO9001:20007)Application:Widely used in water supply, construction support, mechanical tube, etc.8)Export ... export processing hit boxes, etc. of the integrated enterprise. I am in the steel industry has a high reputation, inventory and more ... formed steel welded pipe equipment, and multi-function devices. I am using the Q195-Q235-Q235B-Q345 material, surface galvanized ...