Stainless Steel Pipes & Tubes Manufacturer & Supplier in Mumbai, India
Amardeep Steel Centre is a manufacturer, stockist and dealer of stainless steel pipes operating with strong presence in oil and gas, pharmaceutical, chemical as well as construction sectors. We distribute clients all over India and are also exporting to 40+ countries worldwide. We are also producing our stainless steel pipes and tubes to ASTM 312, ASTM 213 and ASTM 269, and we always have 304, 304L, 316, 316L, 321, 347, 2205 and 904L available on stock.
What makes stainless steel the go-to material for demanding industrial environments comes down to its chemistry. The addition of chromium (18–20%) and nickel (8–14%) forms a natural oxide layer on the surface — one that actively resists oxidation, pitting, and crevice corrosion. Beyond corrosion resistance, this composition also holds up well under high temperatures and aggressive chemical exposure, which is exactly why engineers and procurement teams across process industries keep coming back to stainless steel tubing when reliability isn't negotiable.
Table of Contents
- Types of Stainless Steel Pipes & Tubes
- Stainless Steel Pipe Specifications
- Chemical Composition for ASTM A312 TP304 and TP316
- Mechanical Properties Stainless Steel Pipes & Tubes
- Heat Treatment Requirements Stainless Steel Pipes & Tubes
- Stainless steel pipe and tube sizes and grades
- Stainless Steel Pipe Schedule Chart
- Stainless Steel Pipe Dimensions & Weight Chart
- Grades of Stainless Steel Pipes & Tubes
- Common Forms & Finishes
- Applications of Stainless Steel Pipes & Tubes
- Why Choose Amardeep Steel for Your Stainless Steel Pipes & Tubes Needs?
- Related Products
- Get a Competitive Price
What are Stainless Steel Pipes?
Stainless steel pipes are hollow, elongated, round cross-section products worn throughout the oil and gas industry, chemical industry, medical industry, food processing industry, machinery industry, and structural framework industries because they are strong, resistant to corrosion, and have low maintenance needs. In situations with low torsional loading, stainless steel pipes provide a lightweight alternative that can be used in the mechanical and building industry. They also apply to hydraulic systems, military equipment and fine tuning instruments.
Stainless steel pipes mainly fall into two types known as seamless and welded. They are offered in production methods of hot-rolled, extruded and cold-drawn, circular, square, rectangular, hexagonal and custom profiles.
What are Stainless Steel Tubes?
Stainless steel tubes are used in structural, instrumentation, and pressure applications where precise outside diameter and wall thickness are essential for proper fitting and performance. Heat exchanger stainless steel tubes are widely used in automotive components, medical equipment, and decorative applications. As a leading stainless steel tubing supplier, we also offer square and rectangular seamless stainless steel pipes for structural and special-purpose applications, providing excellent dimensional accuracy across demanding industrial environments.
Types of Stainless Steel Pipes & Tubes
We manufacture and supply a wide array of SS pipes & tubes in various forms, finishes, and dimensions to suit your specific project requirements. Our range includes:
Seamless Stainless Steel Pipes & Tubes
Manufactured without a weld seam via hot extrusion or cold drawing, seamless stainless steel pipes deliver superior pressure containment and are the preferred choice for critical oil & gas, power generation, and chemical applications. Available in sizes ½" NB to 24" NB per ASTM A312 / ASME SA312.
Welded Stainless Steel Pipes & Tubes
Welded stainless steel pipes are made by welding rolled sheets or strips and are more economical for larger diameters and non-critical applications. Commonly used in structural, automotive, and industrial sectors. Available in ERW, EFW, and LSAW types.
EFW / Large Diameter Stainless Steel Pipes
Electric Fusion Welded (EFW) pipes are available in sizes 6" NB to 100" NB for industrial pipelines, desalination plants, and structural applications where large bore sections are required. Manufactured per ASTM A358.
Stainless Steel Pipe Specifications
Stainless steel pipes are available in seamless, ERW, welded, and fabricated types as per ASTM, ASME, JIS, DIN, and EN standards. Offered in multiple sizes, forms, and surface finishes, they ensure strength, corrosion resistance, and reliable performance in industrial applications.
| Specifications | Details |
|---|---|
| Standards | ASTM A312/A358, ASME SA312/SA358, DIN EN 10216-5, JIS G3459 |
| Dimensions | ASTM, ASME and API |
| Standard | JIS, AISI, ASTM, GB, DIN, EN |
| Surface | Brushed, Mill Finished, Anodized, Sand Blasted, Finished Polished |
| Seamless Pipes Size | ½" NB – 24" NB |
| ERW Pipes Size | ½" NB – 24" NB |
| EFW Pipes Size | 6" NB – 100" NB |
| Form | Round, Square, Rectangular, Hydraulic, Oval |
| Length | Single Random, Double Random & Cut Length |
| Types | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
Chemical Composition of ASTM A312 TP304, TP304L, TP316 & TP316L
| Grade | UNS No. | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Molybdenum |
|---|---|---|---|---|---|---|---|---|---|
| TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0–20.0 | 8.0–11.0 | — |
| TP304L | S30403 | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0–20.0 | 8.0–13.0 | — |
| 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 |
Mechanical Properties of Stainless Steel Pipes & Tubes
| Grade | UNS No. | Tensile Strength (MPa) | Yield Strength (MPa) | Hardness (HRB max) |
|---|---|---|---|---|
| TP304 | S30400 | 515 | 205 | 92 |
| TP304L | S30403 | 485 | 170 | 92 |
| TP316 | S31600 | 515 | 205 | 95 |
| TP316L | S31603 | 485 | 170 | 95 |
Heat Treatment Requirements for Stainless Steel Pipes & Tubes
| Grade | Heat Treatment Temperature | Cooling / Testing |
|---|---|---|
| TP304 / TP304L | 1900°F (1040°C) | Water Quench |
| TP316 / TP316L | 1900°F (1040°C) | Water Quench |
Stainless Steel Pipe & Tube Sizes
| Parameter | Details |
|---|---|
| Standards | ASTM A312, ASTM A213, ASTM A269, ASME SB677 |
| Duplex Standards | ASTM A789 / ASME SA 789, ASTM A790 / ASME SA 790 |
| Material | AISI 304, 304L, 316, 316L, 321, 347, 2205, 2507, 904L |
| Outer Diameter | 5.8 – 508 mm |
| Wall Thickness | 0.3 – 50 mm |
Stainless Steel Pipe Schedule Chart
Stainless steel pipe schedules define wall thickness and pressure capacity for different NPS sizes. Common schedules like Sch 5S, 10S, 40S, 80S, and XS ensure strength and reliability for various industrial applications.
| Nominal Pipe Size (NPS) | Commonly Available Schedules |
|---|---|
| 1/8" to 3/4" | Sch 10S, Sch 40S, Sch 80S |
| 1" to 2" | Sch 5S, Sch 10S, Sch 40S, Sch 80S, Sch 160, Sch XXS |
| 2½" to 4" | Sch 5S, Sch 10S, Sch 40S, Sch 80S, Sch 160, Sch XXS |
| 6" | Sch 5S, Sch 10S, Sch 40S, Sch 80S, Sch 120 |
| 8" to 12" | Sch 5S, Sch 10S, Sch 20, Sch 40S, Sch 80S |
| 14" to 24" | Sch 10S, Sch 20, STD (Sch 40S), Sch 40 |
| 26" to 36" | STD (Sch 40S), Sch XS |
Stainless Steel Pipe Dimensions & Weight Chart
Standard stainless steel pipe sizes with OD, wall thickness, and weight per metre for Sch 40S and Sch 80S.
| NPS | OD (mm) | Sch 40S WT (mm) | Sch 40S Weight (kg/m) | Sch 80S WT (mm) | Sch 80S Weight (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 |
Grades of Stainless Steel Pipes & Tubes
We offer stainless steel pipes & tubes across austenitic, martensitic, duplex, super duplex, and super austenitic families. Each grade is optimised for specific performance and application requirements.
|
Grade |
Type |
Key Features |
Common Applications |
|---|---|---|---|
|
201 |
Austenitic |
Cost-effective; manganese-substituted; moderate corrosion resistance |
General fabrication, kitchen equipment, decorative trim, structural applications |
|
Austenitic |
General-purpose; excellent corrosion resistance, good formability |
Food processing, kitchenware, architectural trim, general industrial piping |
|
|
Austenitic |
High-carbon 304; enhanced strength at elevated temperatures |
Pressure vessels, high-temperature structural components, boiler tubes |
|
|
Austenitic |
Low-carbon 304; excellent for welding, prevents intergranular corrosion |
Welded chemical equipment, pharmaceuticals, food & beverage |
|
|
Austenitic |
Molybdenum added; superior pitting/crevice corrosion resistance in chlorides |
Marine, chemical/petrochemical, pharmaceutical, medical devices |
|
|
Austenitic |
High-carbon 316; improved high-temp strength with enhanced corrosion |
High-temperature pressure vessels, power generation, furnace parts |
|
|
Austenitic |
Low-carbon 316; ideal for welding in aggressive environments |
Chemical/petrochemical, marine hardware, medical implants, pulp & paper |
|
|
Austenitic |
Titanium-stabilised 316; prevents sensitisation, good high-temp strength |
Exhaust manifolds, aircraft parts, chemical processing at elevated temperatures |
|
|
Austenitic |
High Cr/Ni; excellent high-temperature oxidation & creep resistance |
Furnace parts, heat exchangers, power generation |
|
|
Austenitic |
Titanium-stabilised 304; prevents intergranular corrosion after welding |
Aircraft exhaust manifolds, expansion joints, boiler casings |
|
|
Austenitic |
High-carbon 321; improved high-temp strength with stabilisation |
High-temperature structural applications, pressure vessels |
|
|
Austenitic |
Niobium-stabilised; excellent intergranular corrosion resistance |
High-temp chemical process equipment, superheaters, boiler tubes |
|
|
Martensitic |
Basic martensitic; heat-treatable for hardness |
Cutlery, fasteners, valves, pump shafts |
|
|
Duplex |
High strength; excellent resistance to SCC, pitting, and general corrosion |
Chemical processing, oil & gas pipelines, marine, pulp & paper |
|
|
Super Duplex |
Very high strength; exceptional corrosion resistance in extreme environments |
Offshore oil/gas, chemical tankers, desalination plants, subsea equipment |
|
|
Super Austenitic |
High Ni/Mo/Cu; excellent resistance to sulfuric acid, chlorides, SCC, pitting |
Chemical processing, sulfuric acid production, marine environments |
Manufacturing Types and Processes
- Seamless Hot Rolling Process: Round Pipe Billet → Heating → Perforation → Shaping (Three Roll Skew Rolling / Continuous Rolling / Extrusion) → Sizing / Diameter Reduction → Cooling → Straightening → Hydrostatic Test / Flaw Detection → Marking → Storage
- Seamless Cold Rolling (Cold Drawn) Process: Round Pipe Billet → Heating → Perforation → Annealing → Pickling → Oil Coating (Copper) → Multi-Pass Cold Drawing → Heat Treatment → Straightening → Hydrostatic Test → Marking → Storage
- Longitudinal Welding Process: Includes ERW (Electric Resistance Welding) and EFW (Electric Fusion Welding) — strip or plate is formed and seam-welded, then heat-treated and tested per ASTM A312/A358.
Need a specific grade or non-standard size?
Our technical team can advise on grade selection, wall thickness, and schedule for your application — from ½" to 100" NB, in any ASTM/ASME/DIN grade.
Request a QuoteStainless Steel Pipe vs Tube — Key Differences
| Attribute | Stainless Steel Pipe | Stainless Steel Tube |
| Sizing Convention | Nominal Pipe Size (NPS) + Schedule | Exact Outside Diameter (OD) + Wall Thickness |
| Primary Use | Fluid & gas conveyance (process piping) | Structural, instrumentation, heat exchange |
| Tolerances | Wider — based on NPS/schedule standard | Tighter — OD and WT tolerance critical |
| Typical Standards | ASTM A312, ASTM A358, ASME SA312 | ASTM A213, ASTM A269, ASME SA213 |
| Cross Sections | Round (primarily) | Round, Square, Rectangular |
Seamless vs Welded Stainless Steel Pipe — Comparison
| Attribute | Seamless Pipe | Welded Pipe |
| Manufacturing | Hot extrusion / cold drawing — no weld seam | Strip or plate rolled and seam-welded (ERW/EFW/LSAW) |
| Pressure Rating | Higher — preferred for critical applications | Lower — suitable for non-critical & structural use |
| Size Range | ½" NB to 24" NB | ½" NB to 100" NB (EFW) |
| Cost | Higher | More economical |
| Typical Use | Oil & gas, power generation, chemical processes | Structural, architectural, water distribution |
Common Forms & Finishes
Our stainless steel pipes and stainless steel tubes are available in the following forms and surface finishes:
- Forms: Round, Square, Rectangular, Hydraulic, Oval, and Custom Profiles
- Finishes: Mill Finish (2B, 2D), No. 4 (Brushed), No. 8 (Mirror / Bright Annealed), Annealed & Pickled (AP), Electropolished, Sand Blasted, Anodized
Applications of Stainless Steel Pipes & Tubes
- Oil & Gas Industry: Pipelines, drilling equipment, processing plants.
- Chemical & Petrochemical Industry: Conveying corrosive chemicals, heat exchangers, reactors.
- Food Processing & Dairy: Hygienic piping for food, beverages, and dairy products.
- Pharmaceutical Industry: Sterile piping systems for drug manufacturing.
- Power Generation: Boilers, condensers, heat exchangers in power plants.
- Marine & Shipbuilding: Seawater piping, offshore structures.
- Architecture & Construction: Structural components, handrails, decorative elements, modern facades.
- Automotive Industry: Exhaust systems, structural components.
- Medical Devices: Surgical instruments, implants, hospital equipment.
- Water Treatment & Desalination: Pipelines and components resistant to corrosive water.
- Textile Industry: Dyeing equipment, processing lines.
- Pulp & Paper Industry: Handling corrosive chemicals and slurries.
- Defence & Aerospace: Hydraulic lines, structural tubing, and high-pressure systems for naval and aerospace applications.
Why Choose Amardeep Steel for Your Stainless Steel Pipes & Tubes Needs?
- Established in 1982: Over 40 years as a manufacturer, stockist, and exporter of stainless steel pipes, tubes, and fittings — serving clients in oil & gas, pharmaceutical, and power generation sectors.
- Superior Quality: Our SS pipes and tubes are manufactured using premium raw materials and undergo rigorous quality control at every stage, adhering to ASTM, ASME, DIN, JIS, and EN standards. Each pipe is tested to internationally recognised standards and our internal QC procedures.
- Diverse Inventory: We maintain a vast stock of stainless steel pipes & tubes in various sizes, grades, and specifications, ensuring immediate availability for urgent requirements.
- Customisation Capabilities: We offer tailored solutions including custom lengths, finishes, and fabrication to meet unique project demands.
- Competitive Pricing: We offer transparent, competitive stainless steel pipe pricing with volume discounts available. Contact us for a current price list by grade, size, and quantity.
- Global Reach: We export SS pipes & tubes to UAE, USA, UK, Canada, Germany, Saudi Arabia, Qatar, Singapore, and 35+ other countries. Our logistics network ensures efficient and timely delivery.
- Customer-Centric Approach: Expert technical support and responsive service from inquiry through to after-sales.
- Compliance & Certifications: ISO 9001:2015 certified. EN 10204 3.1/3.2 Mill Test Certificates supplied with every order. IBR-approved pipes available on request. NACE MR0175 compliant grades stocked for sour service applications.
- IBR-Approved Boiler Pipes: We supply IBR-certified stainless steel boiler pipes for power and process industries in India, compliant with Indian Boiler Regulations.
Related Products
- Stainless Steel Buttweld Fittings
- Stainless Steel Forged Fittings
- Stainless Steel Flanges
- Stainless Steel Pipe Fittings
- Stainless Steel Bars, Rods & Wires
- Stainless Steel Plates, Sheets & Coils
- Stainless Steel Fasteners
- Duplex Steel Pipes & Tubes
- Super Duplex Steel Pipes & Tubes
Get a Competitive Price for Stainless Steel Pipes & Tubes Today!
For a reliable supply of certified SS pipes & tubes, trust Amardeep Steel Centre — established 1982, ISO 9001:2015 certified, supplying with EN 10204 3.1/3.2 Mill Test Certificates. Our technical team is ready to provide a prompt, detailed quotation whether you need a single length or a full container load.
Request a QuoteFAQs About Stainless Steel Pipes & Tubes
What is the difference between a Stainless Steel Pipe and a Tube?
While both are hollow cylindrical products, pipes are typically used for fluid/gas conveyance and sized by nominal pipe size (NPS) and schedule. Tubes are generally used for structural, mechanical, or instrumentation purposes, with precise outside diameter (OD) and wall thickness being critical.
What is the difference between 304 and 316 Stainless Steel Pipe?
304 Stainless Steel Pipe is the most common grade, offering good general corrosion resistance. 316 contains 2–3% molybdenum, which provides superior resistance to pitting and crevice corrosion in chloride-rich environments such as marine or chemical processing applications.
What is the Diameter of a Stainless Steel Pipe?
Stainless steel pipe sizes vary widely, specified by Nominal Pipe Size (NPS) ranging from ½ inch up to 24 inches or larger for industrial applications.
What are Stainless Steel Pipes and Tubes used for?
Stainless steel pipes and tubes are used in oil & gas, chemical processing, food & dairy, pharmaceuticals, construction, automotive, marine, and defence industries. Their strength, durability, and corrosion resistance make them suitable for both industrial and structural applications.
Why choose SS Pipes and SS Tubes over other materials?
SS pipes and tubes offer high corrosion resistance, heat resistance, strength, and hygienic properties. They are long-lasting, easy to maintain, and cost-effective over their service life compared to carbon steel (which corrodes) or plastic alternatives (which have pressure/temperature limits).
Do you supply Stainless Steel Pipes and Tubes in different grades and sizes?
Yes. At Amardeep Steel Centre, we supply stainless steel pipes and tubes in grades 201, 304, 304L, 316, 316L, 321, 347, 2205, 2507, and 904L across a wide range of diameters and thicknesses. Custom fabrication and non-standard sizes are available on request.
