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STEEL PIPES FILLED WITH CONCRETE

What is a concrete filled steel pipe?

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Concrete filled carbon steel tube

Steel tubes are circular (most common) or rectangular steel tubes filled with concrete. These are two items fully maximized to meet the need for bridges and viaducts.

Benefits of Steel and Concrete Pipes:

  • Steel tube confines the concrete
  • Concrete increases stiffness and compressive strength

Application of Steel Pipes (Tubes) filled with concrete

Widely used as metallic foundation elements in bridges and elevated viaducts. Under large loads, inelastic deformation is isolated. Concrete components remain essentially elastic for large weights.

steel tubes

Advantages of using steel tubes

Regarding precast concrete columns:

  • No mold to build
  • Internal reinforcement not required
  • Self-consolidating concrete
  • Smaller diameters than precast concrete columns
  • Installation and ease of handling due to being lighter
  • Length and diameters can vary within a structure
  • Can also be integrated with prefabricated beams
  • Accelerated construction process

See examples of products manufactured by our company of Tubes in Metal Jackets .

Types of Steel Pipes

Spiral Welded Tubes

  • Economical diameters and lengths, widely available, with spiral seam welding
  • Manufactured by running a steel coil through a machine that rotates
  • Spiral steel coil
  • Double submerged arc welding is used to seal the spiral; with continuous x-ray welding
  • mechanical connection

Tubes with Straight Seam

  • Availability for thicker tubes
  • most typically used
  • available for stacking
  • no mechanical link
  • Low shrinkage concrete or bending bonding

Annular Ring in Tubulos

  • Welded to the tube to provide anchorage and stress transfer
  • Same thickness and strength as steel tube
  • Can be inserted both inside and outside the tube
  • Welded to the pipe or using fillet welds designed to transfer the tensile strength of the steel pipe

Carbon Steel Tube Bridges Viaducts

conclusion

  • Spiral welded tubing provides mechanical interlocking and superior bonding capability.
  • Columns and bridge connections with concrete filled steel tubes are more efficient than precast columns.
  • Material savings between 20 and 60%
  • Different designs can be implemented
  • It is an extremely viable solution for building bridges in a short time.

See our range of available steel products.

Check out a page that we talk about our Metal Shirts and Tubes .

 

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