USUI
Home About USUI News Releases Products Human Resources Human Resources

PRODUCTS

Single Walled Steel Tubing (Hycolin® tube)

Single Walled Steel Tubing
Hycolin® tube is the Single Wall Steel Tube manufactured through the specific facilities developed by USUI. The inner surface of the tubes is clean and smooth and finished by copper plating. Various kind of surface treatment are applied additionally on both inner and outer surfaces depending on applications where these special thin tubes are needed.

Features

  • Competitive pricing.
  • Excellency in mechanical properties and strength against inner pressure.
  • Uniform and stabilized quality contribute to high reliability of the tubes at fabricating bending as well as tube end forming.
  • Because of its clean and smooth surface,resistance against fluid is very small.
  • Copper or nickel plating on the inner surface can be a rust preventative measure.
Quality Characteristics

1.Chemical Composition
C% Mn% P% S%
0.12max. 0.50max. 0.040max. 0.045max.


2.Mechanical Properties (Conforming JASO M 101-94)
Tensile Strength
MPa
Yield Point
MPa
Elongation
%
Hardness
HV
294min. 176min. 25min. 150min.


3.Surface Treatment
Inner Surface Cu plating 3 µm up
Ni plating 3 µm up

Various kinds of specific surface treatment on both outer and inner surfaces depending on required application are available.  Please ask us for availability suited for usage.

4.Standard Size, Allowance and Pressure Performance (Conforming JASO M 101-94)
Nominal Diameter Outer Diameter mm Wall Thickness mm Guaranty Pressure
MPa
Base Size Allowance Base Size Allowance
4.76 4.76 +0.08 0.7 +0.08 24.5
6.35 6.35 24.5
8 8 +0.1 0.7 +0.1 19.6
10 10 19.6
12 12 0.9 14.7
12.7 12.7 14.7
15 15 1 14.7
18 18 9.8
For the sizes other than those in the list, please ask USUI for availability.

Applications

  • Automobiles/Transportation:
    Fuel tube, Oil tube, Vacuum tube and other pipe lines.
  • Electric instrument:
    Electric refrigerater,Electric air conditioner tubular parts.
  • Others:
    Heat exchanger, Oil pressure piping and other pipe components.
Fuel Delivery Engine Cooling
» Fan
» Fan Clutch
Internal Engine All products