TPi July 2008

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Tube makingRaw mater ials for
44 Tube Products International July 2008
Ambica Steels, India, is a modern
stainless steel mill employing a
range of sophisticated steel making
technologies.
It produces around 80,000 tons per year
in most austenitic, ferritic, martensitic
and duplex grades of stainless steel, in
a broad range of high-quality finished
and semi-finished products.
The company claims to be the second
largest stainless steel producer in India,
and rather than continuing to increase
in size is now aiming to become a more
specialised stainless steel producer,
with a greater focus on Super-duplex
and similar alloys.
Ambica Steels produces bright round
bars from 4 to 120mm (3/16 " to 41/2"); flat
bars from 30 to 150mm, up to 25mm
thick; and square and hexagon bars
from 10 to 50mm (3 /8" to 2").
Other products include angles, pump/
piston shaft quality bars, hot rolled
black bars and billets, continuous cast
billets and forging quality ingots.
Asmax® Stainless Type 303, 304, 304L,
316 and 316L are improved machining
grades produced by Ambica Steels.
These grades are identical to standard
ASTM or DIN grades, except with
respect to machinability.
The key to improved machinability
lies in the special melting process
adopted by Ambica with optimised non-
metallic inclusions, optimal chemical
composition and an optimised process
and production parameters.
This special melting process results in
a material providing claimed benefits
that include increased productivity –
Asmax Stainless machines smoother
and with less waste, and can cope with
an increased machining rate.
The material also provides better tool
life, requiring tools to be changed less
frequently, as the tools will experience
less wear and tear, and will stay sharp
for longer.
Since aggressive machining produces
the most favourable results, increased
productivity results automatically.
Machinability also depends on many
variables in the machining process.
Because of this, the different criteria
of machinability must be viewed with
caution.
Some of the variables that affect the
evaluation of machinability are: type of
cutting fluid used during the process;
type of machining operation being
carried out; rigidity of tooling or fixtures;
and tool material and geometry.
Asmax Stainless products include
smooth turned/ground and polished
round bars; cold drawn and polished
round bars; and hot rolled round and
square bars.
Ambica Steels Limited – India
Stainless steel with improved machinability
Ferrous and non-
ferrous materials
from India
Satellite Metals & Tubes Ltd, India, is
a manufacturer, stockist and supplier
of ferrous and non-ferrous materials
including stainless steel, carbon steel,
alloy steel, sheets and plates, and raw
materials in all grades and sizes.
The company also manufactures
tubes, pipes (seamless and welded)
and pipe fittings such as elbows, tees,
reducers, flanges, bends, stud bolts
and all types of valve.
The company’s range of supply also
includes brass, copper aluminium,
zinc, lead, monel, nickel, inconel and
hastelloy.
Satellite Metals & Tubes imports and
keeps stock in bulk quantities.
Materials can be offered for third
party inspection before dispatch, if
required.
The company supplies materials to
government and semi government
companies, public sector under-
takings, and industries including
chemical, engineering, textile,
paper, petrochemicals, fertilizer and
pharmaceuticals.
Satellite Metals & Tubes Ltd – India
Getting the most out of
stainless steel scrap
Variety Steel, India, is an importer, stockist and supplier of stainless steel pipe
and tube in austenitic grades.
The company is looking to provide European, American, Japanese and Korean
stainless steel pipe and tube manufacturers with a premium solution for their
scrap left from the manufacturing and inspection process.
According to Variety Steel, from buying the raw material to selling the finished
product, manufacturers have approximately 2% of scrap in pipe form – around
20 tons/month if production is 1,000 tons/month.
Common reasons for scrap include pipe-ends left from continuous production
from coils (welded); short-length; rejection in final dimensional check; rejection
in visual inspection; surface scratches; non-conformity with standards; surplus
production; and cancellation of orders.
Variety Steel buys such scrap at a premium, and will accept anything in stainless
steel pipe and tube in austenitic grades, unless it is in pipe form, and at near
to scrap prices.
Variety Steel – India
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