Stainless Steel 317 Welded Pipe Manufacturer & Stockist in India
Stainless Steel 317 Welded Pipe is an austenitic stainless steel pipe
manufactured by forming stainless steel material into a tubular shape and
joining the longitudinal seam through welding. The grade contains higher
levels of chromium, nickel and molybdenum than standard 304 stainless steel,
providing improved resistance to aggressive chemical and corrosive
environments.
The higher molybdenum content of 317 provides enhanced resistance to pitting
and crevice corrosion, while chromium and nickel contribute to general
corrosion resistance and structural stability. This makes 317 welded pipe
suitable for process systems exposed to corrosive chemicals and industrial
fluids.
Kamal Steels is a Stainless Steel 317 Welded Pipe Manufacturer and Exporter in India, based in Mumbai. The company
supplies SS 317 welded pipes in various sizes, schedules, wall thicknesses,
lengths and surface finishes for industrial and international requirements.
Stainless Steel 317 Welded Pipe is a molybdenum-bearing austenitic stainless
steel pipe developed for applications requiring higher corrosion resistance
than conventional 304 and 316 stainless steel. Its higher chromium,
molybdenum and nickel content provides improved resistance to pitting,
crevice corrosion and aggressive chemical environments.
Stainless Steel 317 Welded Pipes are commonly specified under ASTM A312
TP317 for pressure and process piping applications. The material is suitable
for corrosive chemical processing, petrochemical equipment, pulp and paper
systems and other industrial applications where enhanced corrosion
resistance is required.
Plain End, Bevelled End, Threaded End and as required
Surface Finish
Annealed & Pickled, Mill Finish, Bright Annealed and Polished
Testing
Hydrostatic, Ultrasonic, PMI, Dimensional Inspection and other specified tests
Material Certificate
EN 10204 3.1 Certificate available as required
Kamal Steels supplies Stainless Steel 317 Welded Pipes from India in
different sizes, schedules, wall thicknesses, lengths and finishes. Pipes
can be supplied with applicable inspection, testing and material
documentation according to customer and project requirements.
Stainless Steel 317 Welded Pipe Chemical Composition
Stainless Steel 317 contains chromium, nickel and molybdenum as its primary
alloying elements. The increased molybdenum content compared with common
austenitic grades helps improve resistance to localized corrosion in
chloride-containing and chemically aggressive environments.
Element
Composition (%)
Carbon (C)
0.08 max.
Manganese (Mn)
2.00 max.
Silicon (Si)
0.75 max.
Phosphorus (P)
0.045 max.
Sulfur (S)
0.030 max.
Chromium (Cr)
18.0–20.0
Nickel (Ni)
11.0–15.0
Molybdenum (Mo)
3.0–4.0
Nitrogen (N)
0.10 max.
Iron (Fe)
Balance
The actual heat analysis should be verified against the applicable ASTM
material specification and the material test certificate supplied with the
pipe.
Stainless Steel 317 Welded Pipes are manufactured in different nominal pipe
sizes, outside diameters and wall thicknesses. Pipe dimensions are selected
according to pressure requirements, operating conditions, piping design,
fabrication requirements and applicable standards.
Common schedules include SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160 and XXS,
depending on the nominal pipe size. Custom outside diameters, wall
thicknesses and cut lengths can also be supplied for project-specific
requirements.
Nominal Pipe Size
Outside Diameter
Common Schedules
1/8 NB
10.3 mm
SCH 5S, SCH 10S, SCH 40S, SCH 80S
1/4 NB
13.7 mm
SCH 5S, SCH 10S, SCH 40S, SCH 80S
1/2 NB
21.3 mm
SCH 5S, SCH 10S, SCH 40S, SCH 80S
1 NB
33.4 mm
SCH 5S, SCH 10S, SCH 40S, SCH 80S
1 1/2 NB
48.3 mm
SCH 5S, SCH 10S, SCH 40S, SCH 80S
2 NB
60.3 mm
SCH 5S, SCH 10S, SCH 40S, SCH 80S
3 NB
88.9 mm
SCH 5S, SCH 40S, SCH 80S
4 NB
114.3 mm
SCH 5S, SCH 40S, SCH 80S
6 NB
168.3 mm
SCH 5S, SCH 40S, SCH 80S, SCH 160
8 NB
219.1 mm
SCH 10S, SCH 40S, SCH 80S, SCH 160
10 NB
273.1 mm
SCH 10S, SCH 40S, SCH 80S, SCH 160
12 NB
323.9 mm
SCH 10S, SCH 40S, SCH 80S, SCH 160
14 NB
355.6 mm
SCH 10S, SCH 40S, SCH 80S
16 NB
406.4 mm
SCH 10S, SCH 40, SCH 80
18 NB
457.2 mm
SCH 10S, SCH 40, SCH 80
20 NB
508.0 mm
SCH 10S, SCH 40, SCH 80
24 NB
610.0 mm
SCH 10S, SCH 40, SCH 80
Kamal Steels supplies Stainless Steel 317 Welded Pipes in standard and
custom dimensions, schedules, wall thicknesses and lengths according to
applicable standards and customer requirements.
ASTM A312 TP317 Welded Pipes are manufactured with controlled dimensional
requirements for outside diameter, wall thickness and length. These
dimensions help ensure proper pipe fit-up, welding, fabrication and
installation.
Parameter
Requirement
Outside Diameter
Controlled according to applicable ASTM A312 dimensional requirements and specified pipe size.
Wall Thickness
Controlled according to specified nominal wall thickness and applicable standard requirements.
Length
Available in standard random, double random or specified cut lengths.
Ovality
Controlled to maintain acceptable roundness and dimensional consistency.
End Preparation
Plain, bevelled or other specified end preparation.
Dimensional inspection can include outside diameter, wall thickness and
length measurements. Additional inspection can be arranged according to
customer specifications and project requirements.
Stainless Steel 317 Welded Pipe Pressure Rating
The pressure rating of Stainless Steel 317 Welded Pipe depends on nominal
size, wall thickness, operating temperature, allowable stress and the
applicable piping design code. Therefore, pressure capacity should be
calculated using the actual design conditions rather than assigning one
pressure rating to every pipe size and schedule.
Factor
Effect on Pressure Design
Pipe Size
Outside diameter is considered during pressure design calculations.
Wall Thickness
Greater wall thickness generally provides higher pressure-carrying capacity.
Allowable material stress varies with service temperature.
Design Code
The applicable piping code determines the pressure design calculation.
Corrosion Allowance
Additional wall thickness may be required for the specified service environment.
The final allowable working pressure should be established using actual
design pressure, temperature, pipe dimensions, material properties and the
applicable engineering code.
Stainless Steel 317 Welded Pipe Equivalent Grades
Stainless Steel 317 is identified by different designations under
international material standards. These designations help identify the
same or closely corresponding grade when sourcing material for industrial
applications.
Standard
317 Designation
ASTM
317
ASME
SA312 TP317
UNS
S31700
EN
1.4449
Material equivalency should be confirmed against chemical composition,
mechanical properties, product form, manufacturing requirements and the
applicable project specification before accepting a substitute grade.
Stainless Steel 317 Welded Pipe Surface Finish
The surface finish of Stainless Steel 317 Welded Pipe is selected according
to the application, corrosion environment, cleaning requirements and
fabrication process. Industrial process piping generally uses annealed and
pickled or mill finishes, while specialized applications may require
brighter or polished surfaces.
Surface Finish
Description
Typical Application
Annealed & Pickled
Heat-treated and chemically cleaned surface.
Chemical and process piping
Mill Finish
Standard surface produced during pipe manufacturing.
General industrial applications
Bright Annealed
Smooth and bright surface produced through controlled annealing.
Specialized process systems
Polished
Mechanically finished surface with improved smoothness.
Specialized applications
The required finish should be selected according to the operating
environment and project specification.
Stainless Steel 317 Welded Pipe Applications
Stainless Steel 317 Welded Pipes are used where higher corrosion resistance
than conventional austenitic stainless steel grades is required.
Chemical process piping
Petrochemical piping
Acid handling systems
Pulp and paper process equipment
Flue gas handling systems
Industrial fluid handling
Heat exchanger systems
Corrosive process systems
Stainless Steel 317 Welded Pipe Applications
Stainless Steel 317 Welded Pipes are used where higher corrosion resistance
than conventional austenitic stainless steel grades is required.
Chemical process piping
Petrochemical piping
Acid handling systems
Pulp and paper process equipment
Flue gas handling systems
Industrial fluid handling
Heat exchanger systems
Corrosive process systems
Frequently Asked Questions
Stainless Steel 317 Welded Pipe is an austenitic stainless steel pipe containing higher molybdenum content than SS 316, offering enhanced resistance to pitting, crevice corrosion, and chemical attack.
SS 317 contains a higher percentage of molybdenum and nickel, providing improved corrosion resistance in aggressive chemical and chloride-containing environments.
Our pipes are manufactured according to ASTM A312, ASTM A358, ASTM A778, ASME SA312, and ASME B36.19M specifications.
Stainless Steel 317 Welded Pipes are available from 1/8" NB to 24" NB in multiple schedules, wall thicknesses, and customized lengths.
These pipes are widely used in chemical processing, petrochemical plants, pulp & paper mills, marine engineering, food processing, pharmaceutical manufacturing, and water treatment facilities.
Yes. Their increased molybdenum content provides excellent resistance to many corrosive chemicals, acids, and chloride-rich environments.
Each pipe is inspected through hydrostatic testing, PMI, radiographic examination, dimensional verification, flattening tests, and visual inspection.
Yes. EN 10204 3.1 Mill Test Certificates are supplied with every shipment, while third-party inspection certificates can be provided upon request.
Yes. We offer customized diameters, wall thicknesses, lengths, schedules, surface finishes, and end preparations based on project requirements.
Kamal Steels is a trusted manufacturer and exporter offering premium-quality Stainless Steel 317 Welded Pipes with certified materials, strict quality control, fast dispatch, competitive pricing, and reliable worldwide supply.