Square tube classification

By production process: Hot-rolled Seamless Square Pipe, Cold Drawn Seamless Square Pipe, Extruded Seamless Square Pipe, Welded Square Pipe.

In terms of material, we offer plain carbon steel square tubes and low-alloy steel square tubes. Plain carbon steel includes grades such as Q195, Q215, Q235, SS400, 20#, and 45#, while low-alloy steel encompasses grades like Q345, 16Mn, Q390, and ST52-3.

By cross-sectional shape classification: (1) Simple cross-section square tube - Square square tube, rectangular square tube; (2) Complex cross-section square tube - Flower-shaped square tube, open-ended square tube, wavy square tube, special-shaped square tube.

Hot-Dip Galvanized Square Tubes, Electro-Galvanized Square Tubes, Oiled Square Tubes, Pickled Square Tubes

By Application - Decorative Square Tubes, Machining Equipment Square Tubes, Mechanical Industry Square Tubes, Chemical Industry Square Tubes, Steel Structure Square Tubes, Shipbuilding Square Tubes, Automotive Square Tubes, Steel Beam Columns Square Tubes, Special Purpose Square Tubes

Categorized by Wall Thickness – Extra-thick-walled Square Tubes, Thick-walled Square Tubes, and Thin-walled Square Tubes