3. Introduction
❏ The steel tubes and pipes industry caters primarily to the
needs to flowing materials to desired distance under
pressure and force.
❏ Tubes can be round, square and rectangular, measured
by outside diameter and wall thickness whereas pipes are
always round in shape and measured by inside diameter.
❏ It is the most often used product by the steel industry.
5. SAW Pipes(Submerged Arc Welding)-
❏ Production by U-ing/O-ing process-
● First Stage
➢ The plate is crimped in the area of its
longitudinal edges.
➢ Crimping is performed in special
forming presses.
Manufacturing Process
6. ● Second Stage
➢ Plate is bent into a U-shape in one
Operation
➢ To counter the spring-back effect.
distance between the supports is
reduced in order to apply a small
degree of overbend.
Third Stage-
➢ By O-ing process round open-seam
pipe is produced using the finished
product from U-ing process.
7. ERW Pipe
❏ Welding method again
simultaneously utilizes
pressure and heat in
order to join the strip edges.
❏ Strip edges of the
open-seam tube are joined
together without the addition
of a filler metal.
8. Seamless Pipe
Pierce and Pilger process
❏ Two-stage rolling process
❏ Employed for outside diameters
from approx.60 to 660 mm and
wall thicknesses from 3 to 125 mm.
Plug rolling process
❏ Blooms received from rotatry
furnace is pierced in the cross roll
after descaling by high pressure water jet
❏ Diameter range - 60 to 406 mm
9. Continuous mandrel rolling process-
❏ Rolling stands offset by 90° to neighbours
and inclined at 45°to the horizontal
Push bench process -
❏ Diameter range -50 to 170 mm ,
Wall thicknesses-3 to 18 mm
Pierce and Draw process
❏ Diameter range-200 and 1450 mm ,
Wall thicknesses-20 to 270 mm
10. Coated Pipe
Pipeline coating is the most consistent solution for protecting
Types of Coating-
❏ Internal Coating-
❏ External Coating -
11. Common Coatings
❏ Plant pipe Coating - Epoxy coating,Three layer coating,
Hot Tape coatings, Cold Tape coatings, Hot Enamel
❏ Yard Pipe Coating-Hot Tape coatings,Liquid coatings,Cold
Tape coating,Hot Enamel coatings.
❏ Field Pipe Coating-Cold tape,Hot tape.
❏ Field Joint protection-Cold PVC or PE Tape
coatings,Liquid coatings ,Heat Shrink Sleeves.
❏ Coating Rehabilitation-Cold tape, liquid.
12. Tube Extrusion
❏ Cross Rolling Process
● Utilise the Stiefel piercing press for producing
the hollow shell from round bloom
❏ Assel Rolling Process
● Used to produce Stainless Steel tube
● Diameter Range-60 to 250 mm
● Outside diameter to wall thickness
range 4-15.
13. 3-Diescher Rolling Process
❏ Finished tube dimensions are produced
by manderal bar in dieschar mill
4-Cold Drawing
❏ Main Purpose-closer wall
thickness,diameter& surface finish.
5-Cold Pilgering
❏ OD range-8-230mm
❏ Thickness Range-0.5 to 25 mm
19. Demand Drivers
❏ Oil and Gas Industry
❏ Energy and Power Sector
❏ Water Projects
❏ Need for Pipes and Tubes in Transportation
❏ Automobile Industry
❏ Shale Gas
❏ City Gas Distribution
❏ Real Estate
20. Oil and Gas Industry
❏ The global oil & gas industry has proven to be a major
demand driver for Indian steel tubes and pipes industry.
❏ Global gas demand expected to rise by 576 million cubic
meters from 2012 to 2017
❏ The surge in demand for pipes is a huge prospects for the
Indian pipe industry to penetrate into the international
market and at the same time maintain interest in a
developing domestic market
21. Water Projects
❏ Water projects cover significant sectors such as water
transportation, irrigation and drainage
❏ Transportation of potable water across several homes in
the country drives demand for tubes and pipes
22. Pipe and Tubes in Transportation
❏ Steel tubes and pipes find major application in ports
❏ The Indian coastline extends 7500 Km long inclusive of 13
major ports and 200 minor ports
❏ Airports With 136 airports, India presents itself as the 9th
largest aviation market
❏ According to the 12th 5-year plan Rs. 547.43 billion was
injected into the aviation sector
❏ Scope for great potential growth in transportation industry
will act as boost for steel pipe and tube industry in future
23. Automobile Industry
❏ Steel Pipes and Tubes are important components in the
construction of automobiles
❏ Center for Monitoring Indian Economy predicted a rise in
overall automobile production by 9.6% in 2012-13 wherein
commercial vehicle production is expected to expand by
8.5%
❏ With the continuously increase in demand of automobiles,
demand of Steel Pipe and Tubes are also likely to
increase
24. Shale Gas
❏ India boasts 537 trillion cubic feet (tcf) of shale gas in 28
sedimentary basins.
❏ Around 260 tcf is estimated to be recoverable
❏ The importance for exploration, production and
transportation of shale gas has fostered the need for steel
pipes and tubes
❏ The capability of Indian shale gas reserves has generated
significance and hence the propelled demand in the steel
pipes industry
25. City Gas Distribution
❏ The city gas distribution has a network of 26,500 Km
spread across India significantly over western and
northern parts of the country
❏ It comprises of approximately 8-9% of the total gas
consumption in India, pipe manufactures can seek despite
in the fact that improvements in the pipeline infrastructure
are required on south and east India
26. Key Challenges
❏ Fluctuations in raw materials prices
❏ Weak Global Economic Growth
❏ Growing Competition
❏ Anti Dumping Duties
❏ Weakening Financials