Stainless Steel Pipes and Tubes Manufacturer, Stockist & Exporter in Mumbai, India
Since 1982, Amardeep Steel Centre has been manufacturing, stocking and exporting stainless steel pipes and tubes for projects in oil and gas, pharmaceutical, chemical, power and construction, across India and to more than 40 countries. We hold 304, 304L, 316, 316L, 321, 347, 2205 and 904L in ready stock at our Mumbai warehouse, produced to ASTM A312, A213, A269 and A358.
So why does stainless steel keep winning the spec sheet for demanding service? It comes down to chemistry. Chromium at 16 to 20 percent and nickel at 8 to 14 percent form a self-repairing passive oxide film that shrugs off oxidation, pitting and crevice attack. Add molybdenum, as in the 316 family, and that protection extends into chloride-heavy and marine
environments too, without giving up strength at high temperature. That's the reason process engineers keep coming back to stainless tubing when downtime simply isn't an option.
Every order are sent with an EN 10204 3.1 or 3.2 Mill Test Certificate attached. We're ISO 9001:2015 certified, keep NACE MR0175 compliant grades on hand for sour service, and can supplyIBR approved boiler pipes on request. Send us your grade, size and schedule through a quick quote and our technical team will get back to you with pricing and availability the same working day.
What Are Stainless Steel Pipes and Tubes?
Stainless steel pipes
A stainless steel pipe is a hollow section of circular cross section specified by Nominal Pipe Size (NPS) and schedule, designed primarily to convey fluids and gases. Because the controlling dimension is the internal bore, pipe tolerances are governed by the schedule standard rather than by an exact outside diameter. Stainless steel pipes are used throughout oil and gas, chemical processing, pharmaceutical manufacturing, food processing and structural framework applications, where strength, corrosion resistance and low maintenance matter more than initial cost. They are produced as seamless stainless steel pipes or welded stainless steel pipes by hot rolling, extrusion or cold drawing, in round, square, rectangular, hexagonal and custom profiles.
Stainless steel tubes
A stainless steel tube is specified by its exact outside diameter and wall thickness, and is used where dimensional precision governs performance in structural, instrumentation and heat transfer duty. Heat exchanger tubes, condenser tubes and instrumentation tubing all fall into this category, as do automotive components, medical equipment and architectural tubing. As a stainless steel tubing supplier we also stock square tubes and rectangular tubes for structural and special purpose work. The distinction matters commercially, because ordering tube tolerances against a pipe standard is the most common cause of rejected material at site. Our guide on the difference between stainless steel pipe and tube explains both sizing conventions in detail.
Types of Stainless Steel Pipes & Tubes We Manufacture
Seamless stainless steel pipes & tubes
Manufactured without a weld seam by hot extrusion or cold drawing, seamless stainless steel pipes and tubes deliver the highest pressure containment and are the default choice for critical oil and gas, power generation and chemical duty. Available in ½" NB to 24" NB to ASTM A312 and ASME SA312, and as tube to ASTM A213 and ASTM A269.
Welded stainless steel pipes & tubes
Welded stainless steel pipes and tubes are formed from rolled sheet or strip and seam welded, making them substantially more economical at larger diameters and in non critical service. They are widely used in structural, architectural, automotive and water distribution applications, and supplied to ASTM A312 and ASTM A249.
ERW stainless steel pipes
Electric Resistance Welded pipes are produced from ½" NB to 24" NB and are the workhorse of general industrial piping where cost per metre governs the specification. Our blog on ERW pipes covers how the seam is formed and tested.
EFW and large diameter stainless steel pipes
Electric Fusion Welded pipe covers 6" NB to 100" NB for industrial pipelines, desalination plants and large bore structural work, manufactured to ASTM A358 and ASME B36.19M.
Specialty forms
We also produce stainless steel coil tubing for instrumentation and umbilical use, micro tubes for medical and analytical equipment, sanitary tubing to ASTM A249, A269 and A270 for food, dairy and pharma, oval pipes and tubes for architectural work, and EN 10216-5 tubes for European specifications.
Technical Data
Stainless Steel Pipe Specifications
Stainless steel pipes are supplied in seamless, ERW, welded and fabricated forms against ASTM, ASME, JIS, DIN and EN standards, in a wide range of sizes, forms and surface finishes.
Specification |
Details |
|---|---|
Pipe standards |
ASTM A312 / A358 / A249, ASME SA312 / SA358, DIN EN 10216-5, JIS G3459 |
Tube standards |
ASTM A213 / ASME SA213, ASTM A269, ASTM A270 sanitary, ASME SB677 |
Duplex standards |
ASTM A789 / ASME SA789, ASTM A790 / ASME SA790 |
Dimensions |
ASTM, ASME and API |
Seamless pipe size |
½" NB to 24" NB |
ERW pipe size |
½" NB to 24" NB |
EFW pipe size |
6" NB to 100" NB |
Outside diameter |
5.8 mm to 914.4 mm |
Wall thickness |
0.3 mm to 50 mm, Sch 5S to Sch XXS |
Schedules |
Sch 5S, 10S, 20, 30, 40S, STD, 60, 80S, XS, 100, 120, 140, 160, XXS |
Form |
Round, square, rectangular, oval, hydraulic, hollow section, coil, U bend |
Length |
Single random, double random and cut length |
Ends |
Plain end, bevelled end, threaded |
Surface finish |
Mill finish 2B and 2D, No. 4 brushed, No. 8 mirror, bright annealed, annealed and pickled, electropolished, sand blasted |
Compliance |
ISO 9001:2015, EN 10204 3.1 / 3.2 MTC, NACE MR0175 / ISO 15156, IBR on request |
Grades of Stainless Steel Pipes & Tubes
We supply stainless steel pipes and tubes across the austenitic, ferritic, martensitic, duplex, super duplex and super austenitic families. Each grade name in the table links to its dedicated product page with full chemistry and stock data.
Grade |
Family |
Key characteristics |
Typical applications |
|---|---|---|---|
Austenitic |
General purpose, excellent corrosion resistance and formability |
Food processing, general industrial piping, architectural |
|
Austenitic |
Low carbon, resists intergranular corrosion after welding |
Welded chemical equipment, pharma, food and beverage |
|
Austenitic |
High carbon, improved elevated temperature strength |
Pressure vessels, boiler tubes |
|
Austenitic |
High Cr and Ni, oxidation resistance to 1000 C |
Furnace parts, heat treatment equipment |
|
Austenitic |
Excellent high temperature oxidation and creep resistance |
Kilns, boiler tubes, coal gasifiers |
|
Austenitic |
2 to 3 percent Mo, superior pitting and crevice resistance |
Marine, chemical, petrochemical, medical |
|
Austenitic |
Low carbon 316, ideal for welded aggressive service |
Chemical, marine hardware, implants, pulp and paper |
|
Austenitic |
High carbon 316, high temperature strength with Mo |
High temperature pressure vessels, furnace parts |
|
Austenitic |
Titanium stabilised, resists sensitisation |
Exhaust manifolds, aircraft parts, hot chemical service |
|
Austenitic |
Higher Mo than 316, enhanced chloride resistance |
Flue gas desulphurisation, pulp and paper, dyeing |
|
Austenitic |
Titanium stabilised 304, no intergranular attack after welding |
Aircraft exhaust, expansion joints, boiler casings |
|
Austenitic |
Niobium stabilised, excellent intergranular resistance |
Superheaters, high temperature process equipment |
|
Martensitic |
Heat treatable for hardness and wear |
Valves, pump shafts, fasteners |
|
Ferritic |
High Cr for sulphur bearing and high temperature atmospheres |
Furnace parts, capillary and instrumentation tube |
|
Duplex |
Twice the yield of 304 and 316, excellent SCC and pitting resistance |
Oil and gas pipelines, chemical, marine, pulp and paper |
|
Super Duplex |
Very high strength, PREN above 40 for extreme chloride service |
Offshore, chemical tankers, desalination, subsea |
|
Super Austenitic |
High Ni, Mo and Cu, resists sulphuric acid and chlorides |
Sulphuric acid plant, chemical processing, marine |
|
Heat resistant |
Cerium enhanced, oxidation resistance to 1150 C |
Furnace rolls, radiant tubes, calciners |
Stainless Steel Pipe Equivalent Grades
Use this cross reference when converting between American, German and European designations at the enquiry stage.
Standard |
Werkstoff Nr. |
UNS |
EN designation |
|---|---|---|---|
SS 304 |
1.4301 |
S30400 |
X5CrNi18-10 |
SS 304L |
1.4306 / 1.4307 |
S30403 |
X2CrNi19-11 |
SS 304H |
1.4948 |
S30409 |
X6CrNi18-10 |
SS 310S |
1.4845 |
S31008 |
X8CrNi25-21 |
SS 316 |
1.4401 / 1.4436 |
S31600 |
X5CrNiMo17-12-2 |
SS 316L |
1.4404 / 1.4435 |
S31603 |
X2CrNiMo17-12-2 |
SS 316Ti |
1.4571 |
S31635 |
X6CrNiMoTi17-12-2 |
SS 321 |
1.4541 |
S32100 |
X6CrNiTi18-10 |
SS 347 |
1.4550 |
S34700 |
X6CrNiNb18-10 |
SS 2205 |
1.4462 |
S32205 / S31803 |
X2CrNiMoN22-5-3 |
SS 2507 |
1.4410 |
S32750 |
X2CrNiMoN25-7-4 |
SS 904L |
1.4539 |
N08904 |
X1NiCrMoCu25-20-5 |
Chemical Composition of ASTM A312 Stainless Steel Pipes and Tubes
Values are maximum percentages unless a range is shown.
Grade |
UNS |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
|---|---|---|---|---|---|---|---|---|---|
TP304 |
S30400 |
0.08 |
2.00 |
0.045 |
0.030 |
1.00 |
18.0-20.0 |
8.0-11.0 |
Nil |
TP304L |
S30403 |
0.035 |
2.00 |
0.045 |
0.030 |
1.00 |
18.0-20.0 |
8.0-13.0 |
Nil |
TP316 |
S31600 |
0.08 |
2.00 |
0.045 |
0.030 |
1.00 |
16.0-18.0 |
11.0-14.0 |
2.0-3.0 |
TP316L |
S31603 |
0.035 |
2.00 |
0.045 |
0.030 |
1.00 |
16.0-18.0 |
10.0-14.0 |
2.0-3.0 |
Full chemistry for every grade we stock is published on each product page, including 316L stainless steel pipes and tubes and 904L stainless steel pipes and tubes.
Mechanical Properties of SS Pipes & Tubes
Grade |
UNS |
Tensile strength MPa min |
Yield strength MPa min |
Elongation percent min |
Hardness HRB max |
|---|---|---|---|---|---|
TP304 |
S30400 |
515 |
205 |
35 |
92 |
TP304L |
S30403 |
485 |
170 |
35 |
92 |
TP316 |
S31600 |
515 |
205 |
35 |
95 |
TP316L |
S31603 |
485 |
170 |
35 |
95 |
Heat Treatment of Stainless Steel Pipes & Tubes
Grade |
Solution annealing temperature |
Cooling |
|---|---|---|
TP304 / TP304L |
1040 C minimum |
Water quench or rapid cool |
TP316 / TP316L |
1040 C minimum |
Water quench or rapid cool |
TP321 / TP347 |
1040 C minimum |
Water quench or rapid cool |
2205 Duplex |
1020 to 1100 C |
Rapid water quench, mandatory |
Stainless Steel Pipe Size, Schedule and Weight Charts
Pipe schedule defines wall thickness and therefore pressure capacity at a given nominal pipe size. Sch 5S and 10S are the light wall stainless schedules used where corrosion allowance is unnecessary, Sch 40S and 80S cover most process piping, and Sch 160 and XXS are reserved for high pressure service. For a fuller explanation see our guide to the difference between Schedule 40 and Schedule 80 pipe, or browse our dedicated Schedule 40 pipe and Schedule 80 pipe pages.
Commonly available schedules by NPS
Nominal Pipe Size (NPS) |
Commonly available schedules |
|---|---|
1/8" to 3/4" |
Sch 10S, Sch 40S, Sch 80S |
1" to 2" |
Sch 5S, 10S, 40S, 80S, 160, XXS |
2½" to 4" |
Sch 5S, 10S, 40S, 80S, 160, XXS |
6" |
Sch 5S, 10S, 40S, 80S, 120 |
8" to 12" |
Sch 5S, 10S, 20, 40S, 80S |
14" to 24" |
Sch 10S, 20, STD (40S), Sch 40 |
26" to 36" |
STD (Sch 40S), Sch XS |
Stainless steel pipe dimensions and weight per metre
NPS |
OD (mm) |
Sch 40S WT (mm) |
Sch 40S kg/m |
Sch 80S WT (mm) |
Sch 80S kg/m |
|---|---|---|---|---|---|
1/2" |
21.3 |
2.77 |
1.29 |
3.73 |
1.65 |
3/4" |
26.7 |
2.87 |
1.71 |
3.91 |
2.23 |
1" |
33.4 |
3.38 |
2.54 |
4.55 |
3.29 |
1½" |
48.3 |
3.68 |
4.11 |
5.08 |
5.49 |
2" |
60.3 |
3.91 |
5.52 |
5.54 |
7.60 |
3" |
88.9 |
5.49 |
11.47 |
7.62 |
15.51 |
4" |
114.3 |
6.02 |
16.32 |
8.56 |
22.67 |
6" |
168.3 |
7.11 |
28.69 |
10.97 |
43.21 |
8" |
219.1 |
8.18 |
43.20 |
12.70 |
65.63 |
10" |
273.0 |
9.27 |
61.16 |
15.09 |
97.72 |
12" |
323.8 |
9.53 |
74.62 |
17.48 |
134.15 |
16" |
406.4 |
9.53 |
94.55 |
16.66 |
163.60 |
20" |
508.0 |
9.53 |
118.66 |
19.05 |
234.30 |
24" |
609.6 |
9.53 |
142.67 |
20.62 |
303.88 |
For a figure not shown here, use our steel weight calculator or the full pipe dimension chart. Sizing conventions are explained further in our article on steel pipe sizes and nominal pipe size.
Stainless Steel Pipe vs Tube
Attribute |
Stainless steel pipe |
Stainless steel tube |
|---|---|---|
Sizing convention |
Nominal Pipe Size plus schedule |
Exact outside diameter plus wall thickness |
Primary use |
Fluid and gas conveyance in process piping |
Structural, instrumentation, heat exchange |
Tolerances |
Wider, governed by the schedule standard |
Tighter, OD and WT tolerance are critical |
Typical standards |
ASTM A312, A358, ASME SA312 |
ASTM A213, A269, A270, ASME SA213 |
Cross sections |
Round, primarily |
Round, square, rectangular, oval |
Cost basis |
Priced per metre by NPS and schedule |
Priced per metre or per piece by OD and WT |
Seamless vs Welded Stainless Steel Pipe
Attribute |
Seamless pipe |
Welded pipe |
|---|---|---|
Manufacturing |
Hot extrusion or cold drawing with no weld seam |
Strip or plate rolled and seam welded by ERW, EFW or LSAW |
Pressure rating |
Higher, preferred for critical service |
Lower, suits non critical and structural use |
Size range |
½" NB to 24" NB |
½" NB to 100" NB in EFW |
Cost |
Higher |
More economical, especially at large bore |
Typical use |
Oil and gas, power generation, chemical process |
Structural, architectural, water distribution |
Our article on seamless vs welded pipe for industrial applications covers the selection logic in more depth.
Manufacturing Process of Stainless Steel Tubes & Pipes
Seamless hot rolling
Round billet, heating, perforation, three roll skew rolling or continuous rolling or extrusion, sizing and diameter reduction, cooling, straightening, hydrostatic test and NDT, marking, storage. The output is our hot rolled seamless pipe range.
Seamless cold drawing
Round billet, heating, perforation, annealing, pickling, lubricant coating, multi pass cold drawing, heat treatment, straightening, hydrostatic test, marking, storage. Cold drawn seamless tube delivers the tighter tolerances and superior surface finish required for instrumentation and hydraulic service.
Longitudinal welding
Strip or plate is roll formed and seam welded by ERW or EFW, then solution annealed, pickled and tested to ASTM A312 or ASTM A358. Filler metal is not added in the automatic welding process used for ASTM A790 duplex products.
Testing, Inspection and Certification
Every heat is tested before despatch. Our standard test scope includes:
- Chemical analysis and Positive Material Identification
- Tensile, yield and elongation testing
- Hardness testing in HRB and HV
- Flattening and flaring tests
- Intergranular corrosion testing to ASTM A262 Practice A and E
- Hydrostatic pressure testing with eddy current or ultrasonic NDT
- 100 percent radiography on welded seams where specified
- Micro and macro examination
- Third party inspection by Lloyd's, BV, SGS, TUV or EIL on request
Documentation supplied with every order includes an EN 10204 3.1 or 3.2 Mill Test Certificate, heat number traceability, a dimensional inspection report and, where applicable, IBR Form III-C. View our quality certifications and testing facilities.
Applications of Stainless Steel Pipes & Tubes
Stainless steel pipes and tubes are specified wherever corrosion resistance, hygiene or high-temperature strength are non-negotiable. Below are the industries and duty conditions we supply into most, each matched to the specific grade or product form that fits the service:
- Oil & Gas: pipelines, drilling equipment, offshore process plant and sour service to NACE MR0175, often specified alongsideduplex steel pipes and tubes for chloride heavy environments.
- Chemical & Petrochemical: corrosive transfer lines, reactors andheat exchangers handling aggressive acids and process chemicals.
- Power Generation:boiler tubes, superheaters, condensers and feedwater lines rated for sustained high pressure, high temperature service.
- Pharmaceutical: sterile, high purity process piping and WFI (Water for Injection) loops built to pharma grade surface finish standards.
- Food, Dairy & Beverage: hygienic sanitary tubing and CIP (Clean in Place) lines using316L pipes and tubes for corrosion free, contaminant free contact surfaces.
- Marine & Shipbuilding: seawater piping, offshore structures and ballast systems where chloride resistance is critical.
- Water Treatment & Desalination: reverse osmosis skids, brine handling and distribution headers.
- Architecture & Construction:stainless steel railings, facades and structural hollow sections combining corrosion resistance with aesthetic finish.
- Automotive: exhaust systems, structural and hydraulic components requiring heat and vibration resistance.
- Pulp, Paper, Textile & Fertiliser: corrosive slurry and chemical handling in continuous process environments.
- Defence & Aerospace: hydraulic lines and high pressure structural tubing meeting strict weight to strength specifications.
Why Choose Amardeep Steel for Stainless Steel Pipes & Tubes
- Established in 1982 with more than 40 years as a manufacturer, stockist and exporter of stainless steel pipes, tubes and stainless steel fittings
- Deep ready stock across grades, sizes and schedules, so urgent requirements ship without a mill lead time
- ISO 9001:2015 certified, EN 10204 3.1 and 3.2 MTC with every order, NACE MR0175 grades stocked and IBR pipes and tubes available
- Customisation including bespoke lengths, finishes, end preparations and fabrication to drawing
- Transparent and competitive pricing with volume discounts, with a current price list available by grade, size and quantity
- Exports to the UAE, USA, UK, Canada, Germany, Saudi Arabia, Qatar, Singapore and 35 further countries
- Technical support on grade selection, wall thickness and schedule from enquiry through to after sales, backed by our piping solutions team
We Supply Stainless Steel Pipes & Tubes To Cities and Countries
Stainless steel pipes and tubes are supplied ex stock Mumbai and delivered across India including Pune, Ahmedabad, Vadodara, Surat, Chennai, Coimbatore, Hyderabad, Visakhapatnam, Bengaluru, Kolkata, Delhi NCR, Jamnagar, Bharuch, Ankleshwar, Nashik, Nagpur, Indore, Bhopal, Ludhiana, Jamshedpur, Kochi and Bhubaneswar, with dispatch coordinated through oursourcing and logistics network for fast turnaround on urgent site requirements.
We export to the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, USA, Canada, UK, Germany, Netherlands, Italy, Spain, Singapore, Malaysia, Indonesia, Vietnam, Thailand, South Korea, Australia, South Africa, Nigeria, Kenya, Egypt, Turkey, Brazil and Mexico, backed by export documentation, third party inspection and sea worthypacking and dispatch standards on every shipment.
Related Stainless Steel Products
- Stainless Steel Buttweld Fittings
- Stainless Steel Forged Fittings
- Stainless Steel Flanges
- Stainless Steel Plates, Sheets & Coils
- Stainless Steel Bars, Rods & Wires
- Stainless Steel Fasteners
- Duplex Steel Pipes & Tubes
- Super Duplex Steel Pipes & Tubes
- Stainless Steel Heat Exchanger Tubes
- Stainless Steel Condenser Tube
Get a Competitive Price for Stainless Steel Pipes & Tubes Today
For a reliable supply of certified SS pipes and tubes, work with Amardeep Steel Centre, established 1982 and ISO 9001:2015 certified, supplying with EN 10204 3.1 and 3.2 Mill Test Certificates. Whether you need a single length or a full container load, our technical team will return a detailed quotation the same working day. Request a quote or contact our Mumbai office.
Frequently Asked Questions - Stainless Steel Pipes & Tubes
What is the difference between a stainless steel pipe and a tube?
A pipe is specified by Nominal Pipe Size and schedule and is designed to convey fluids, so its controlling dimension is the internal bore. A tube is specified by exact outside diameter and wall thickness with tighter tolerances, and is used for structural, instrumentation and heat transfer duty.
What is the difference between 304 and 316 stainless steel pipe?
316 contains 2 to 3 percent molybdenum, which 304 does not. That addition gives 316 markedly better resistance to pitting and crevice corrosion in chloride bearing and marine environments. 304 is more economical and performs well in general atmospheric, food and architectural service.
What sizes of stainless steel pipe do you supply?
Seamless and ERW pipe from half inch NB to 24 inch NB, EFW pipe from 6 inch NB to 100 inch NB, and tube from 5.8 mm to 508 mm outside diameter with wall thickness from 0.3 mm to 50 mm, in schedules from 5S through XXS.
Which standards do your stainless steel pipes and tubes conform to?
Pipes are supplied to ASTM A312 and ASME SA312, and to ASTM A358 for EFW. Tubes follow ASTM A213, A249, A269 and A270 for sanitary service. Duplex products follow ASTM A789 and A790, and European requirements are met to EN 10216-5.
Do you supply mill test certificates?
Yes. Every order ships with an EN 10204 3.1 or 3.2 Mill Test Certificate showing heat number, chemical analysis and mechanical test results, plus a dimensional inspection report. Third party inspection by Lloyd's, BV, SGS, TUV or EIL is available on request.
Are IBR approved stainless steel boiler pipes available?
Yes. We supply IBR certified stainless steel boiler pipes compliant with the Indian Boiler Regulations, with Form III-C documentation, for power and process plant across India.
What is the price of stainless steel pipe per kg?
Stainless steel pipe pricing moves with nickel and chromium input costs, grade, size, schedule and order quantity. Send your grade, NPS, schedule and tonnage through our enquiry form and we will return a firm current price the same working day.
Do you export stainless steel pipes and tubes?
Yes. We export to more than 40 countries including the UAE, Saudi Arabia, Qatar, USA, Canada, UK, Germany, Singapore and Australia, with export documentation, third party inspection and sea worthy packing handled in house.
