Jindal Saw Ltd produces large diameter steel pipes using various manufacturing processes. It produces ductile iron spun pipes (DISP) using centrifugal casting, induction furnaces, magnesium treatment, and annealing. The pipes undergo various tests and treatments like hydrostatic testing, cement lining, curing, zinc coating, and bituminous coating. Pipes are checked for quality before being dispatched. Jindal emphasizes preventative and breakdown maintenance to maintain plant equipment and machinery.

2. JINDAL SAW LIMITED
MUNDRA,GUJARAT

3. ABOUT JINDAL SAW LTD.
 Jindal group is found by Late. Shri
O.P.JINDAL in 1984.
 It is one of the largest producers of SAW
pipes, which is widely used in the energy
sector for the transportation of oil & gas.
 It also manufacturing large diameter SAW
pipes and spiral pipes and S.S seamless
pipes and tubes used for industrial
applications; and Ductile iron (DI) pipes for
water and sewage transportation.

4. DUCTILE IRON SPUN
PIPE
(DISP)
MECHANICAL
MAINTENANCE
DEPT.

5. PIPE MATERIAL –BASIS OF
SELECTION
 Structurally Strong.
 Fast & easy laying.
 No/Minimum maintenance.
 Bottle tight & flexible jointing system.
 Ability to resist “Corrosion”.
 Temper Proof.

6. Why Ductile Iron (DI) ?
Cast Iron
Corrosion Resistant but Brittle
Mild Steel
Strong but Corrosion Prone
Ductile Iron
Corrosion Resistant + Strong

7. Production Process of
DISP & Maintenance.

8. Maintenance.
 Maintenance is a set of organised
activities that are carried out in order to
keep an item in its best operational
condition with minimum cost acquired.
 In Jindal there is a two type of
maintenance which is Preventive
Maintenance & Break down
Maintenance.

9. Preventive Maintenance.
 It is a set of activities that are performed
on plant equipment, machinery, and
systems before the occurrence of a
failure in order to protect them and to
prevent their operating conditions.

10. Types of Preventive
Maintenance.
 Routine maintenance
 Running Maintenance
 Opportunity Maintenance
 Shut down Preventive Maintenance

11. Break down Maintenance.
 It is performed after the occurrence of an advanced
considered failure for which advanced provision has
been made in the form of repair method, spares,
materials, labour and equipment.
 Disadvantages:
 Its activities are expensive in terms of both direct and
indirect cost.
 Using this type of maintenance, the occurrence of a
failure in a component can cause failures in other
components in the same equipment, which leads to low
production availability.
 Its activities are very difficult to plan and schedule in
advance.

12. INDUCTION FURNACE.

13.  An induction furnace is an electrical furnace in
which the heat is applied by induction heating
of metal.
 The advantage of the induction furnace is a
clean, energy-efficient and well-controllable
compare to other.
 Induction furnace function is to maintain the
temperature of molten metal coming from blast
furnace.
 In molten metal that is coming from BF
required carbon percentage is minimum
3.70%, but it is higher than 4.5-5.0% so in
induction furnace by adding silicon and scrap it
reduce.
 Induction furnace at temp 1400-1450 C

14. MAGNESIUM TREATMENT
 In 1949, a process was invented by which
flaky graphite in cast iron could be change
to nodular graphite by adding little
magnesium in molten metal.
 The nodular graphite helps to maintain the
continuity of iron matrix provide excellent
properties of flexibility, ductility, and impact
resistance.

16. CENTRIFUGAL CASTING.
 Centrifugal casting
or rotocasting is a
casting techniques
that is typically
used to cast thin
walled cylinders.

17. ANNEALING PROCESS
 Annealing is a heat treatment process
where in a material is altered, causing
change in its properties such as
hardness and ductility.
 It is a process that produces condition
by heating to above critical temperature,
maintain a suitable temperature, and
then cooling.
 Annealing is used to induce to ductility,
soften material relive internal stresses,
and refine the structure by making it
homogenous, and improve cold working
properties.

19. ZINK COATING.
 A spray process in
which metallic zinc
material is heated to a
molten state and
projected in minute
droplets by spray
guns on to the pipe
surface applies
metallic zinc coating.
The zinc coating
machine is capable of
coating in hot or cold
state.

20. HYDRO PRESSURE TESTING
M/C.
 Each pipe is tested
at the specified test
pressure for period
to ensure trouble
free service of pipes.
 Leakage & pressure
carrying capacity of
the pipe is finding
out by this testing.

21. CEMENT LINING.

22.  The Ductile Iron pipes are internally lined
with cement mortar by centrifugal process
which gives uniform thickness, higher
compaction and smoother internal surface
providing higher ‘C’ value.
 Pipe is rotating about 4 to 5 minute
because of this rotation cement lining is
completed inside the pipe.
 Thickness of cement lining is about 2 to 4
mm.
 Cement lining reduces the corrosion and
erosion of the pipe and increase the life of
the pipe.

23. QUERING
 Steam curing provides better strength
to cement mortar lining and minimizes
formation of cracks in the lining. This
ensures longer life of the lining.
 Temp. Inside the cultivation furnace is
about 50 c to 60 c.


24. BITUMINOUS COATING.
 A host of other
internal and external
coatings are offered to
customers to meet
their specific
requirements.
 Bituminous paint is
applied by spraying
process which
ensures uniform
thickness through out
coating on the pipe
surface.

25. FINAL PRODUCT.
 After the pipe is
checking by the
quality department
they mark a quality
symbol on the pipe
then pipe then pipe
is going for
Dispatch.

26. ANY QUERY ?

27. Thank You