Impact Tubing

High Performance Energy Management Solutions

Clevaflex Impact Tubes offer a lightweight energy management solution that provides superior energy absorption and translation throughout impact.

Standard Specifications:

  • Diameters: 1/2 – 4 inches (13 mm – 102 mm)
  • Profile Size: Height and width per customer specifications
  • Lengths: Cut to length per customer specifications
  • Corrugations:
    • (S) Stretched 10-14 per inch
    • (C) Compressed 15-24 per inch

Material Combinations:

The material combinations listed below are the most commonly used in manufacturing.

Type Description

  • P-A-P: Paper-Aluminum-Paper
  • P-A/A-P: Paper-Aluminum/Aluminum Paper
  • P-S-P: Paper-Steel-Paper
  • P-S/S-P: Paper-Steel/Steel-Paper

Other sizes, shapes and materials available upon request. Additional costs may apply.

Only Clevaflex Impact Tubes offer such a wide range of designs with these important features:

  • Lightweight and easy to install
  • Provide superior performance in limited space
  • Absorb and translates energy throughout deformation
  • Function in a wide temperature range
  • Meet FMVSS302 for flammability
  • Ideal for head liners, side rails, A/B/C pillars, knee bolsters and door panels
  • Component and development testing
  • Custom shapes

The Clevaflex K/D Series

Features:

  • Specifically designed to provide the highest energy absorption in the least amount of space
  • The complex shape allows the impact load to be distributed across more support area
  • K/D Series tubes have a flat surface for ease of installation
  • Tubes are not susceptible to deterioration from heat or aging
  • Manufactured from recyclable materials

Standard Sizes:

  • 11 x 20 mm
  • 12 x 20 mm
  • 13 x 20 mm
  • 14 x 25 mm
  • 15 x 25 mm
  • 16 x 25 mm
  • 19 x 30 mm
  • 20 x 30 mm
  • 21 x 30 mm

K/D Performance Test Example:


In the example above, tests were conducted with a 10 lb headform at 15 mph. Improved performance with the complex K/S shape is demonstrated by steeper slopes and lower, longer peak forces.

Additional test results regarding other sizes, shapes and material combinations are available upon request.

K/D Design Concept:


An impact tube is best viewed as a supported beam designed to absorb an applied load. With conventional tubes there are only two supports carrying the load. The further apart they are, the weaker the beam. With the Clevaflex K/D design, a middle support beam is added to create a complex shape that delivers higher performance in less space.