The Flooring Expert

Product Introduction

Galvanized square pipe is a name for square pipe and rectangular pipe, that is, steel pipe with equal side length. It is rolled from strip steel after process treatment. Generally, strip steel is unpacked, leveled, curled, welded to form a round pipe, rolled into a square pipe, and then cut to the required length. Generally 50 pieces per package. Also known as square and rectangular cold-formed hollow section steel, square tube and rectangular tube for short
1. Classification of square and rectangular tube production process
Square and rectangular tubes are divided into hot rolled seamless square tubes, cold drawn seamless square tubes, extruded seamless square tubes and welded square tubes according to the production process. The welded square tubes are divided into: (a) arc welded square tubes, resistance welded square tubes (high-frequency and low-frequency), gas welded square tubes and furnace welded square tubes according to the process; (b) straight seam welded square tubes and spiral welded square tubes according to the weld seam
2. Material classification of rectangular tube
Square tubes are divided into plain carbon steel square tubes and low alloy square tubes according to their materials. Ordinary carbon steel is divided into Q195, Q215, Q235, SS400, 20 # steel, 45 # steel, etc; Low alloy steel is divided into Q345, 16Mn, Q390, ST52-3, etc.
3. Standard classification of square and rectangular tube production
Square tubes are divided into national standard square tubes, Japanese standard square tubes, English standard square tubes, American standard square tubes, European standard square tubes and non-standard square tubes according to the production standards.
4. Section shape classification of rectangular tube
Square pipes are classified according to section shape: (1) simple section square pipes – square square pipes, rectangular square pipes (2) complex section square pipes – flower shaped square pipes, open shaped square pipes, corrugated square pipes, and special-shaped square pipes
5. Classification of surface treatment of rectangular tube
Square tubes are divided into hot-dip galvanized square tubes, electrogalvanized square tubes, oiled square tubes and pickled square tubes according to surface treatment
6. Classification of square and rectangular tubes
The square pipes are classified according to their uses – square pipes for decoration, machine tool equipment, machinery industry, chemical industry, steel structure, shipbuilding, automobile, steel beam and column, and special purposes
7. Classification of wall thickness of square and rectangular tubes
Square and rectangular tubes are classified by wall thickness – extra thick square and rectangular tubes, thick square and rectangular tubes and thin square and rectangular tubes

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