HOLLOW SECTIONS

Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of hollow sections in China. Please feel free to buy high quality hollow sections from our factory. Good service and reasonable price are available.

LEFIN STEEL GROUP is delighted to supply the series of cold formed products such as square steel tubes, rectangular steel tubes and circular steel tubes. With the size range from 20mmx20mm to 1200mmx1200mm, wall thickness from 1.3mm to 50mm.

Type: Seamless or Welded, LSAW 

Specifications of Steel Square Tube:
1) Square Dimension: 20mm*20mm - 1200mm*1200mm (if you need special size, please feel free to contact us)
2) Wall thickness: 1.3mm - 50mm
3) Length: 1m - 25m (suitable for shipping container packing), can be cutting as customer’s requirements
4) Zinc coating:
Pre-galvanized steel square tube: 60g/m² - 275g/m²

Hot Dip Galvanized steel square tube: 200g/m² - 400g/m²

Hot Dip Galvanized steel square tube: 400g/m2 - 600g/m2  ASTM A123

5) Standards: ASTM A500, ASTM A501, EN 10210, EN 10219, JIS G3466, AS/NZS 1163
6) Materials: GR.A  GR.B  S355J2H S355J0H S355JRH S275J0H S275J2H S275JRH S235JR S460 S550 
7) Processing: cold formed or hot formed
8) Application: mechanical, manufacture, steel structure, ship building, bridging, automobile chassis

Engineering Specifications: 
1) Torsional shear constant of cross-section 
2) Moment of inertia of cross-section
3) Torsional stiffness constant of cross-section
4) Governing radius of gyration, elastic section modulus and plastic section modulus
Some of these specifications are for both X-X and Y-Y axes. For exact specification for each nominal size and wall thickness, please see other sources.
 

Features of Steel Square Tube:
1) Excellent equipment
2) Capacity of producing high accurate
3) Heat treatment technical equipment
4) Strict quality management
5) Strong technology and development
Cutting and slitting can be customed as customers' request

Contact: 008615122229899 (whatsapp)  ericli@lefinsteel.com