| Small Diameter
Tubing |
| We are a leading supplier of high technology
stainless steel small diameter tubing,
capillary miniature fine welded tubing, and stainless steel welded
tubes. |
| Medical Application of Stainless Steel
small Diameter Tubing: |
| This type of tube is mainly used for
medical purposes- hypodermic disposable needles, I. V. Cannula,
dental, serum, exploratory, veterinary, transfusion applications
and artificial insemination guns as well as other applications
such as instrumentation, chromatography, electronics, thermostatic
devices, nuclear energy and aerospace research. |
| Stainless Steel small
Diameter Tubing: Fin Tubes |
Stainless Steel Small
Diameter Fin Tube is used for operations where a precision
component is required. We manufacture austenitic stainless
steel small diameter tubes ranging OD from 0.50mm to 12.00
mm and in thickness from 0.10 mm to 1.00 mm.
Our capability allows us the flexibility to provide tubes as per
your need or such diverse applications as: |
- Refrigeration
- Chromatography Instruments
- Pressure Gauges
- Process Control/Thermostatic Control Instruments
- Heating Elements/Heat Exchanger
- Food and Beverage Handling Equipments
- Domestic Applications
- Furniture
- Chemical /Sugar Industries
- Instrumentation Tube for light water reactors
- Drilling and Exploration Platforms
- Aerospace and Nuclear Industry
- Section Tubes for Furnaces, Structural Industry etc.
|
| Material |
| AISI 304, 304L, 310, 316, 316L, 316 Ti,
321, 347, i.e., All common austenitic grades confirming to AISI
and other International Standards. |
| Specifications |
| As per various International Standards
|
| |
| Size Range |
| 0.50 mm – 12.00 mm O. D. and WT 0.1 mm
to 1.00 mm |
| |
| Manufacturing Process of Stainless Steel Small
Diameter Tubing |
| Welding |
| Welded and cold drawn small
diameter tubing begins as a cold rolled sheet or a strip,
which is produced in coils. The Stainless Steel strips are shaped
to a tube form and passed under a welding head, which melts the
edges of the open seam to form a fusion juncture. No filler material
or flux is used and therefore the weld bead is of the same analysis
as the parent Stainless Steel Material. As per the method of welding,
a weld bead is formed on either on both the I. D. and the O. D.
surfaces. |
| |
| COLD DRAWING |
Cold Drawing consists of pulling the tubing
through a die, which is smaller in diameter than the O. D. of
the tube. While it passes through the die, it is usually supported
on the inner surface by a tool, which controls the I. D., wall
thickness and the length. The cold drawing process is repeated
till the desired size is attained. Cold drawing reduces ductility
of the stainless steel. To prevent this, the tubing is normally
annealed between the drawing operations, which increases the ductility
and prevents brittleness.
After the cold drawing process, the weld area can be detected
only by etching or careful microscopic examination. Actually the
weld area is quite homogeneous with the parent metal since the
cold working and intermediate annealing causes the weld area to
re crystal, thus it becomes equivalent to the parent stainless
steel material in ductility, appearance and mechanical properties.
Welded and drawn tubing from cold rolled strip has several advantages.
Strip can be rolled to a precise thickness thus maintaining a
uniform wall thickness after welding. Surface defects can be spotted
visually before welding. |
| |
| Welded tubing often costs less than the seamless
|
| BRIGHT ANNEALING |
| The stainless steel small diameter tubing’s
being produced are subjected to Bright Annealing for relieving
the stresses and complete solutionising of Austenitic matrix,
by putting in thermal energy which allows the stresses to relax.
In this unique process of bright annealing the stainless steel
does not get oxidized and hence no scaling. The inert atmosphere
present in the Furnace gives a bright surface and checks any loss
of Chromium, thus the corrosion property remains unchanged. |
