Product Overview
Inconel Steel Buttweld Fitting Stockist & Supplier in India
Inconel steel butt-weld fittings are engineered for piping systems exposed to
high temperatures, severe oxidation, corrosive chemicals, and high-pressure
operating conditions. As a reliable Inconel Steel Buttweld Fitting Stockist in
India and Inconel Steel Buttweld Fitting Supplier in India, Metal-Link Steel
& Alloys supplies elbows, tees, reducers, caps, stub ends, and other
butt-weld fittings in a range of nickel-chromium-based Inconel grades.
An Inconel Steel Buttweld Fitting is welded directly to the adjoining pipe to
create a permanent, high-integrity connection. The nickel-rich alloy matrix
provides excellent resistance to oxidation and corrosion, while chromium
contributes to high-temperature environmental resistance. Depending on the
selected grade, Inconel fittings can also provide improved strength, creep
resistance, and stability under prolonged thermal exposure.
With an established presence since 1985 and ISO 9001:2015, ISO 14001:2015 and
ISO 45001:2018 certifications, Metal-Link supports Inconel buttweld fitting
requirements with material traceability, inspection documentation and
project-based supply.
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Datasheet
Inconel Steel Buttweld Fitting Specifications
| Specification |
Details |
| Product |
Inconel Steel Buttweld Fittings |
| Material Grades |
Inconel 600, Inconel 601, Inconel 625, Inconel 718,
Inconel X-750 |
| Material Specification |
ASTM B366 / ASME SB366 |
| Standards |
ASME B16.9, ASME B16.28, MSS SP-43 |
| Types Available |
Elbows (45° & 90°, LR & SR), Tees,
Reducing Tees, Crosses, Concentric Reducers, Eccentric
Reducers, Caps, Stub Ends |
| End Connection |
Butt Weld (Beveled Ends) |
| Product Form |
Wrought / Formed & Heat Treated |
| Application |
High-Temperature, Corrosive & Offshore Industrial
Piping Systems |
Product Range
Types of Inconel Steel Buttweld Fittings
As an experienced Inconel Steel Buttweld Fitting Supplier in India, Metal-Link
provides fittings for changing pipeline direction, creating branches, reducing
pipe diameter, and closing piping ends. Our product range includes:
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✓
Inconel Steel Buttweld Elbows
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✓
Inconel Steel Buttweld Tees
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✓
Inconel Steel Reducing Tees
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✓
Inconel Steel Buttweld Crosses
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✓
Inconel Steel Concentric Reducers
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✓
Inconel Steel Eccentric Reducers
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✓
Inconel Steel Buttweld Caps
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✓
Inconel Steel Stub Ends
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✓
Inconel Steel Long Radius Elbows
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✓
Inconel Steel Short Radius Elbows
Inconel Steel Buttweld Elbows
45 Degree ElbowsProvides a
moderate directional change in the piping system where a gradual change
in flow direction is required while maintaining a permanent welded
connection.
90 Degree ElbowsOne of the
most commonly used Inconel Steel Buttweld Fittings for changing
pipeline direction by ninety degrees. Available in long-radius or
short-radius configurations as required.
Long Radius ElbowsProvide a
smoother directional transition and are generally preferred where flow
characteristics, pressure loss, and erosion are important design
considerations.
Short Radius ElbowsUsed where
installation space is restricted. Their compact geometry provides a
tighter directional change which should be evaluated according to flow
velocity and piping design requirements.
Inconel Steel Buttweld Tees, Reducers & Caps
Buttweld TeesCreate branch
connections from a main pipeline. Equal tees are used when the branch
and run have the same nominal size, while reducing tees connect a
smaller branch line.
Concentric ReducersProvide a
symmetrical transition between two pipe sizes. Generally used where
maintaining a common centerline is important.
Eccentric ReducersHave an
offset centerline and are commonly used in horizontal piping. Their
orientation helps control the accumulation of liquid or vapor,
particularly important in pump suction and process piping.
Buttweld CapsUsed to
permanently close the end of a pipeline. The cap is welded to the pipe
end to create a pressure-retaining closure.
Material Grades
Inconel Steel Buttweld Fitting Grades Available
| Inconel Grade |
Principal Alloying Characteristics |
Typical Service Focus |
| Inconel 600 |
Nickel-Chromium |
High-temperature oxidation and corrosion
resistance |
| Inconel 601 |
Nickel-Chromium with aluminium addition |
Severe oxidation and thermal cycling |
| Inconel 625 |
Nickel-Chromium-Molybdenum-Niobium |
Marine, offshore and aggressive corrosion |
| Inconel 718 |
Precipitation-hardenable Nickel-Chromium alloy |
High-strength and elevated-temperature service |
| Inconel X-750 |
Precipitation-hardenable Nickel-Chromium alloy |
High-temperature strength and cyclic service |
Inconel 600 Buttweld Fittings
Inconel 600 is a nickel-chromium alloy known for its resistance to
high-temperature oxidation and corrosion in a variety of service environments.
Its high nickel content provides good resistance to several reducing
conditions, while chromium supports oxidation resistance.
- ✓Good resistance to
high-temperature oxidation
- ✓Excellent resistance to
chloride stress-corrosion cracking in many
environments
- ✓Good mechanical
strength over a broad temperature range
- ✓Suitable for
high-temperature process equipment
Inconel 600 Buttweld Fittings are commonly used in furnace components,
heat-treatment equipment, chemical processing, and high-temperature industrial
piping.
Inconel 601 Buttweld Fittings
Inconel 601 is designed for superior resistance to high-temperature oxidation.
Its composition enables the formation of a protective oxide scale, making it
particularly suitable for thermal environments.
- ✓Excellent oxidation
resistance at elevated temperatures
- ✓Good resistance to
cyclic thermal exposure
- ✓Stable protective oxide
formation
- ✓Suitable for furnace
and thermal processing systems
Inconel 601 fittings are commonly selected for furnace piping, thermal
processing equipment, heat-treatment systems, and high-temperature industrial
applications where oxidation resistance is a primary requirement.
Inconel 625 Buttweld Fittings
Inconel 625 is a nickel-chromium-molybdenum-niobium alloy with excellent
resistance to a wide range of corrosive environments. The alloy is strengthened
primarily through solid-solution strengthening and provides high strength
without requiring precipitation hardening.
- ✓Excellent resistance to
pitting and crevice corrosion
- ✓High resistance to
chloride stress-corrosion cracking
- ✓Good fatigue and
thermal-fatigue resistance
- ✓High strength across a
broad temperature range
- ✓Good performance in
seawater environments
Inconel 625 Buttweld Fittings are widely used in offshore oil and gas systems,
marine equipment, chemical processing, seawater piping, and
aerospace-related applications.
Inconel 718 Buttweld Fittings
Inconel 718 is a high-strength nickel-chromium alloy capable of precipitation
hardening. It is primarily selected where exceptional mechanical strength and
resistance to elevated-temperature deformation are required.
- ✓Very high tensile and
yield strength after appropriate heat
treatment
- ✓Good fatigue
resistance
- ✓Excellent creep and
stress-rupture performance
- ✓Good oxidation and
corrosion resistance
Inconel 718 is widely associated with aerospace and high-performance
engineering. Where used for pressure piping components, fabrication and
heat-treatment requirements should be carefully controlled according to the
applicable specification and service conditions.
Inconel X-750 Buttweld Fittings
Inconel X-750 is a precipitation-hardenable nickel-chromium alloy developed for
high-temperature strength and resistance to oxidation and corrosion.
- ✓High-temperature
mechanical strength
- ✓Good creep and
stress-rupture resistance
- ✓Resistance to
oxidation
- ✓Good performance under
cyclic thermal conditions
Inconel X-750 is used in high-temperature springs, gas turbine components,
nuclear applications, and specialized thermal equipment.
Design Data
Standards & Specifications
As a professional Inconel Steel Buttweld Fitting Stockist in India, Metal-Link
supplies fittings in accordance with applicable dimensional, material, and
project specifications.
| Standard |
Scope |
| ASME B16.9 |
Factory-made wrought steel butt-welding fittings |
| ASME B16.28 |
Wrought steel butt-welding short radius elbows and
returns |
| ASTM B366 / ASME SB366 |
Factory-made wrought nickel and nickel alloy
fittings |
| MSS SP-43 |
Wrought and fabricated butt-welding fittings for
low-pressure corrosion-resistant applications |
| ASTM B444 |
Related Inconel 625 pipe and tube |
| ASTM B167 |
Related nickel-chromium-iron alloy products |
| ASTM B163 / ASTM B407 |
Selected nickel alloy tubular products |
| EN / DIN / BS |
Alternative dimensional and material standards as
required |
Material Data
Composition, Manufacturing & Performance
Chemical Composition & Alloying Elements
The performance of an Inconel Steel Buttweld Fitting depends on the specific
alloy chemistry and metallurgical condition.
| Alloying Element |
Primary Contribution |
| Nickel |
Provides corrosion resistance and metallurgical
stability |
| Chromium |
Improves oxidation and high-temperature corrosion
resistance |
| Molybdenum |
Improves resistance to localized corrosion and
strengthens selected grades |
| Niobium |
Provides solid-solution strengthening or
precipitation-hardening effects depending on the
grade |
| Aluminium |
Supports protective oxide formation and strengthening
in selected grades |
| Titanium |
Contributes to precipitation strengthening in selected
alloys |
| Iron |
Present in varying amounts depending on the specific
Inconel grade |
The exact composition and permitted ranges should always be verified against the
applicable material specification and Material Test Certificate.
Manufacturing Process
Inconel alloys require controlled forming and fabrication because of their high
strength and work-hardening characteristics. The manufacturing process may
include:
- ✓Selection of certified nickel
alloy pipe, plate, billet, or other approved starting
material
- ✓Controlled cutting and
preparation
- ✓Hot forming, cold forming,
pressing, or bending
- ✓Intermediate heat treatment
where required
- ✓Solution annealing or
age-hardening according to the material grade
- ✓Controlled
cooling
- ✓End bevel preparation for
welding
- ✓Surface cleaning and
finishing
- ✓Dimensional
inspection
- ✓Mechanical, chemical, and
non-destructive testing as specified
The manufacturing route depends on the fitting type, alloy grade, size, wall
thickness, and required metallurgical condition.
Mechanical & High-Temperature Performance
An Inconel Steel Buttweld Fitting is selected when conventional stainless steel
or low-alloy steel may not provide sufficient resistance to elevated
temperature, aggressive corrosion, or demanding mechanical conditions.
Important performance characteristics may include:
- ✓High-temperature
strength
- ✓Resistance to
oxidation
- ✓Good creep resistance
in suitable grades
- ✓Excellent resistance to
chloride stress-corrosion cracking in selected
alloys
- ✓Resistance to pitting
and crevice corrosion
- ✓Good fatigue and
thermal-fatigue performance
- ✓Metallurgical stability
during elevated-temperature service
Inconel 625 is particularly valuable for corrosive marine and offshore service,
while Inconel 601 is more strongly focused on high-temperature oxidation
resistance. Inconel 718 and X-750 are selected where high mechanical strength
is a primary requirement.
Welding & Fabrication Considerations
Inconel butt-weld fittings must be installed using qualified welding procedures
suitable for the specific nickel alloy grade. Important fabrication
considerations include:
- ✓Selection of compatible filler
metals
- ✓Thorough cleaning before
welding
- ✓Prevention of contamination
from carbon steel
- ✓Controlled heat
input
- ✓Proper joint preparation and
alignment
- ✓Use of qualified welding
procedures
- ✓Appropriate interpass
temperature
- ✓Post-weld cleaning where
required
Nickel alloys can work-harden during machining and forming, so appropriate
tooling, cutting parameters, and fabrication procedures are important for
maintaining dimensional accuracy and surface quality.
Industry Use
Applications of Inconel Steel Buttweld Fittings
Inconel steel butt-weld fittings are used in industries where extreme
temperature, aggressive corrosion, or high mechanical loading can limit the
performance of conventional materials.
- ✓Oil & Gas
Processing:
High-temperature
and corrosive process piping in oil and gas production and
processing facilities using suitable Inconel grades.
- ✓Offshore Production
Systems:
Topside and subsea
piping using Inconel 625 for its excellent resistance to seawater
and chloride-containing process environments.
- ✓Seawater
Piping:
Marine and offshore
seawater handling systems requiring high corrosion resistance from
Inconel 625 grade fittings.
- ✓Chemical
Processing:
Piping handling
aggressive acids and corrosive chemicals where Inconel alloys
provide superior resistance to standard stainless
steels.
- ✓Petrochemical
Plants:
High-temperature and
corrosive process piping in petrochemical production and refining
systems.
- ✓Power
Generation:
High-temperature
steam and process piping in power plants using suitable Inconel
grades for elevated-temperature service.
- ✓Heat-Treatment
Facilities:
Furnace and
heat-treatment equipment piping using Inconel 600 and Inconel 601
for oxidation resistance and thermal
stability.
- ✓Industrial
Furnaces:
High-temperature
piping in industrial heating and furnace systems using Inconel 600
or 601 grade fittings.
- ✓Heat Exchanger
Systems:
Connecting piping in
heat exchanger installations requiring corrosion-resistant and
high-temperature capable Inconel fittings.
- ✓Marine
Engineering:
Marine piping
and equipment exposed to seawater and marine environments requiring
Inconel 625 corrosion resistance.
- ✓Pollution-Control &
Thermal Processing:
Flue gas
treatment, thermal processing, and pollution-control piping systems
requiring high-temperature and corrosion-resistant alloy
fittings.
Certification
Testing, Inspection & Quality of Inconel Steel Buttweld Fittings
As a dependable Inconel Steel Buttweld Fitting Supplier in India, Metal-Link
Steel & Alloys can supply products with inspection and testing according to
the applicable material standard and project requirements. Available testing
may include:
- ✓Chemical composition
analysis
- ✓Tensile testing
- ✓Hardness testing
- ✓Positive Material
Identification (PMI)
- ✓Liquid penetrant
testing
- ✓Ultrasonic testing where
specified
- ✓Radiographic examination where
applicable
- ✓Dimensional
inspection
- ✓Wall thickness
measurement
- ✓Visual examination
With an established presence since 1985 and ISO 9001:2015, ISO 14001:2015 and
ISO 45001:2018 certifications, Metal-Link supports consistent product quality.
Documentation can include Material Test Certificates, PMI reports, NDT reports,
heat-treatment records, and third-party inspection certificates.
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Pan-India Supply
Inconel Steel Buttweld Fitting Supplier & Stockist Across India
Metal-Link Steel & Alloys supplies Inconel Steel Buttweld Fittings to EPC
contractors, engineering companies, offshore operators, process plants,
fabricators, distributors and industrial buyers across major Indian markets. As
an Inconel Steel Buttweld Fitting Supplier in India, Metal-Link supports
standard and project-specific requirements based on grade, size, schedule, and
quantity.
Cities We Supply
MumbaiPuneAhmedabadVadodaraSurat
DelhiGurugramNoidaChennaiBengaluru
HyderabadKolkataJaipurRajkotCoimbatore
VisakhapatnamNagpurIndore
Have Questions?
Frequently Asked Questions
What grades of Inconel buttweld fittings do you supply?
Metal-Link supplies Inconel Steel Buttweld Fittings
in Inconel 600, Inconel 601, Inconel 625, Inconel 718, and Inconel X-750
grades, subject to the required specification and availability.
What is the difference between Inconel 600 and Inconel 625 buttweld
fittings?
Inconel 600 is a nickel-chromium alloy primarily
selected for high-temperature oxidation resistance and performance in
reducing environments. Inconel 625 is a nickel-chromium-molybdenum-niobium
alloy offering superior resistance to pitting, crevice corrosion, and
chloride stress-corrosion cracking, making it particularly suitable for
marine, offshore, and aggressive corrosive environments.
When should Inconel 601 be selected for buttweld
fittings?
Inconel 601 is selected when severe high-temperature
oxidation resistance is the primary requirement. Its aluminium addition
supports the formation of a stable protective oxide layer, making it
suitable for furnace piping, heat-treatment equipment, and thermal
processing systems where Inconel 600 may not provide sufficient oxidation
resistance.
What standards are used for Inconel buttweld fittings?
Common standards include ASME B16.9 for
factory-made wrought butt-welding fittings, ASME B16.28 for short-radius
elbows, ASTM B366 / ASME SB366 for factory-made wrought nickel and nickel
alloy fittings, and MSS SP-43 where applicable. Related material standards
include ASTM B444 for Inconel 625 pipe and ASTM B167 for
nickel-chromium-iron alloy products.
What welding considerations apply to Inconel buttweld
fittings?
Inconel fittings require qualified welding
procedures specifically developed for the selected nickel alloy grade.
Important considerations include selection of compatible filler metals,
thorough pre-weld cleaning, prevention of carbon steel contamination,
controlled heat input, appropriate interpass temperature, and post-weld
cleaning. Nickel alloys can work-harden during fabrication, so appropriate
tooling and cutting parameters are also important.
Can you supply material test certificates with Inconel buttweld
fittings?
Yes. Inconel Steel Buttweld Fittings can be
supplied with applicable Material Test Certificates (MTCs), chemical
analysis, mechanical test results, PMI reports, NDT reports,
heat-treatment records, and third-party inspection documentation as
required by the project specification.
Request a Quote
Request a Quote for Inconel Steel Buttweld Fittings
Looking for an Inconel Steel Buttweld Fitting Stockist in India for
your offshore, chemical, petrochemical, marine, power generation,
thermal processing, or high-temperature industrial piping
requirements? Contact Metal-Link Steel & Alloys with your
required fitting type, Inconel grade, nominal pipe size, schedule or
wall thickness, dimensional standard, quantity, operating temperature
and pressure, testing requirements, inspection requirements and
documentation requirements for availability and project-specific
pricing.
