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Eramets Steel Alloys: Your Trusted Stainless Steel EP Tube Manufacturer
Eramets Steel Alloys is a manufacturer and supplier of electropolished (EP) stainless steel tubes located in Mumbai. We cater to clients in the pharmaceutical, food and beverages, semiconductors, chemicals and oil & gas sectors in India and internationally.
We manufacture stainless steel EP tubes from seamless and welded stainless steel tubes in accordance with ASTM A213, A269 and A270 standards and provide an extremely smooth, clean and corrosion-resistant inner and outer surface.
Being a stainless steel EP tube manufacturer, we provide standard as well as customized sizes of tubes up to a maximum length of 6 meters with test certificates and full heat number traceability. Each and every tube is tested for its dimensional, surface and mechanical characteristics before shipping, and hence you get high purity and hygienic quality material.
We are also the manufacturers and suppliers of stainless steel bright annealed (BA) tubes which find wide application in hydraulic, instrumentation and heat exchangers applications. If you are looking for a reliable manufacturer of stainless steel BA tubes in India, our team will help you with the right choice of grade and finish..
Definition of Stainless Steel EP Tube
The EP Tubing is a stainless steel tubing that has undergone the process of electropolishing. The process of electropolishing is basically an electrochemical process that removes a very thin layer from the metal surface. Through this process, the metal surface becomes much smoother, shinier, and cleaner when compared to mechanically polished or annealed/pickled tubing.
In simple words, the tube is made from the anode in the electrolytic bath. The current passing through causes the dissolution of the high points of the surface, thus causing the peaks and valleys of the microscopic surface to become even. Moreover, it helps eliminate the contaminants and free iron, forming a very resistant chromium passive layer.
Advantages of Stainless Steel Electropolished Tubes
Extremely smooth surface with lower roughness (Ra), resulting in fewer bacteria and particle adhesion sites
Enhanced resistance to corrosion and pitting
Easier to clean and improved flow in process lines
Shiny and uniform surface finish
Suitable for CIP (Clean-In-Place) and SIP (Steam-In-Place)
Decreased product contamination
What Does It Take to Electropolish SS Tubes?
The following is our procedure for electropolishing stainless steel tubes:
Inbound inspection: base tubes are inspected to check their grade, dimensions, and surface.
Cleaning/degreasing: Oil and other contaminants are cleaned up from the surface.
Electropolishing: This involves processing the tube in a controlled electrolyte bath with regulated conditions of current, temperature, and time.
Rinsing/passivation: The tube is rinsed to clean out any remaining electrolyte and form a stable passive layer.
Inspection/drying/marking: Surface roughness, visual characteristics, and dimensions are checked, and each tube is marked.
Proper packing: Each tube is capped and properly packed to ensure protection during transportation.
Stainless Steel Bright Annealed (BA) Tubes
Bright annealed (BA) tubes go through a controlled heat treatment under oxygen-free conditions, leaving an exceptionally bright, scale-free surface without the need for any pickling.
Applications of SS BA Tubes
As a SS bright annealed tube supplier, the following is what we do with our BA tubes: Hydraulic lines and instruments Heat exchanger and condenser Food & dairy applications Automobile and engineering Tubes up to 50.8 mm (2 in.) OD hydraulic tubes are supplied in the bright annealed condition while above that in annealed and pickled/polished condition.
EP Tube vs BA Tube: Which One Do You Need?
| Feature | EP Tube | BA Tube |
|---|---|---|
| Surface process | Electrochemical polishing | Annealing in a controlled atmosphere |
| Surface finish | Very smooth, mirror-like | Bright and smooth |
| Typical Ra (internal) | 5, 7 and 10 µin. Ra options | Standard bright finish |
| Corrosion resistance | Highest, with a chromium-rich passive layer | Good |
| Best for | Pharma, biotech, semiconductor, food, ultra high-purity systems | Instrumentation, hydraulic, heat exchanger and general use |
| Cleanability | Excellent | Good |
Not sure which is right for you? Share your application, pressure and media details, and our team will recommend the correct option.
Stainless Steel EP Tube Specifications
| Parameter | Details |
|---|---|
| Standards | ASTM A213, A269, A270, A249, ASME SA213, SA269, SA249; EN 10216-5 TC1/TC2, PED 97/23/EC, AD 2000, NACE MR0175/ISO 15156 |
| Grades | 304, 304L, 304H, 310, 310H, 316, 316H, 316L, 317, 317L, 316Ti, 321, 347, 347H, 410, 446, 904L |
| Seamless tube OD | [Confirm: 3.35 mm to 101.6 mm] |
| Welded tube OD | [Confirm: 6.35 mm to 152 mm] |
| Wall thickness | 0.020 in. to 0.220 in. (special wall thicknesses on request) |
| Gauges | 10, 12, 14, 16, 18, 20 SWG/BWG |
| Length | Single random, double random, standard and cut length (up to 6 m) |
| Type | Seamless, ERW, EFW, welded, fabricated |
| Finish | EP (electropolished), BA (bright annealed), AP (annealed and pickled), polished, MF |
| Internal surface (Ra) | 5, 7 and 10 µin. Ra |
| Cleaning | (CFOS) cleaned for oxygen service, corrosive systems and high-purity use |
| Forms | Round, square, rectangular, coil, hydraulic, boiler, straight and U-bent |
| Ends | Plain end, beveled end, threaded; ends suitable for orbital welding |
| Marking | Standard, grade, OD, thickness, length and heat number (or as per customer request) |
| Traceability | Heat number etched within 24 in. (610 mm) of one end |
| Test certificates | EN 10204 3.1 B, laboratory test certificate from a government-approved lab, third-party inspection available |
We can also cut, bend, thread and groove stainless steel tubes to your drawings.
Grades and Chemical Composition
We supply EP and BA tubes in all major austenitic grades. 316L is the most popular for high-purity and pharmaceutical service because of its low carbon content and excellent corrosion resistance.
Stainless Steel Tube Chemical Composition
Stainless Steel Tube Mechanical Properties
Industries We Serve
Pharmaceutical and biotech: WFI, process and clean utility lines Food, dairy and beverage: hygienic processing and CIP lines Semiconductor and electronics: ultra-pure gas and chemical delivery Chemical and petrochemical: corrosive and high-temperature service Oil and gas: instrumentation, control and heat exchange lines Power generation: boilers, condensers and heat exchangers Breweries and water treatment
Quality Testing and Inspection
Every batch of Eramets stainless steel tubing undergoes testing in line with the applicable ASTM standard: Chemical analysis (PMI and laboratory) Tensile, yield and elongation testing Hardness test Flattening and flaring tests Hydrostatic and non-destructive electrical testing Surface roughness (Ra) measurement Visual and dimensional inspection Helium leak testing and other special tests on request MTC to EN 10204 3.1 is provided with every order, and third-party inspection is available.
Why Choose Eramets Steel Alloys as Your SS EP Tube Manufacturer?
Application-focused guidance: we help you choose the right grade, finish and Ra value
Standard and custom sizes: ready stock plus made-to-order lengths and sizes
Full traceability: heat number marking and mill test certificates
Competitive pricing: direct supply from Mumbai with reliable lead times
Clean packing: capped and wrapped tubes to protect EP and BA finish
Export-ready: [add countries served, export documentation support]Quick response: quotation within [24 hours]
ASTM A213 Stainless Steel Tubing, Buy ASTM A269 Stainless Steel Round Tubes, Stainless Steel Welded tubing at best price
At Eramets Steel Alloys, we offer premium quality Stainless Steel Tubing manufactured as per international standards such as ASTM A213, ASTM A269, and ASTM A312. Our range includes both Stainless Steel Seamless Tubes and Stainless Steel Welded Tubes, designed to meet the requirements of various industrial applications. These tubes are available in different grades like SS 304, SS 316, SS 321, and SS 904L, with customizable sizes, wall thicknesses, and finishes.
As per ASTM specifications, each Stainless Steel Tube must comply with strict mechanical properties including tensile strength, yield strength, and elongation. All tubes undergo comprehensive quality testing such as tension testing, hydrostatic testing, flattening test, and non-destructive electrical testing to ensure durability and performance. The weight of each stainless steel tube is accurately calculated, and its chemical composition is verified to meet global quality standards. Eramet Steel is a trusted Stainless Steel Electropolished Tube Manufacturer offering high-quality tubes for industrial applications.
SS Seamless Tube Exporters, Stainless Steel Tubing manufacturers in India
Stainless Steel Tubing is widely known for its excellent corrosion resistance, high strength, and long service life. It performs efficiently in both high-temperature and corrosive environments, making it ideal for industries such as construction, oil & gas, chemical processing, food processing, pharmaceuticals, and power generation. The versatility of SS Pipes and Tubes ensures reliable performance across a wide range of applications.
Eramet Steel is a trusted Stainless Steel Bright Annealed Tube Manufacturer, offering high-quality bright annealed tubes for various industrial applications.
At Eramets Steel Alloys, we supply high-quality Stainless Steel Tubes in Mumbai at competitive prices with assured quality and timely delivery. Whether you need SS Seamless Tubes, Welded Tubes, or Stainless Steel Pipes, we provide reliable and cost-effective solutions tailored to your requirements. Contact us today to get the best price for Stainless Steel Tubing in Mumbai and fulfill your project needs efficiently. We are also a trusted SS BA Tube Manufacturer in India, offering quality tubes for various industrial applications.
Ferritic Stainless Steel Tube Specification
| Stainless Steel Tube Standards | ASTM A312, ASTM A213, ASTM A358, ASTM A269, ASTM A249, ASTM A688 ASME SA312, ASME SA213, ASME SA358, ASME SA269, ASME SA249, ASME SA688 EN 10216-5 TC1 / TC2, PED 97/23/EC, AD 2000, NACE MR0175/ISO 15156 |
|---|---|
| Stainless Steel Tubing grades | 304, 304L, 304H, 310, 310H, 316, 316H, 316L, 317, 317L, 316Ti, 321, 347, 347H, 410, 446 and 904L |
| Stainless Steel Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| SS Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Ferritic Stainless Steel Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Austenitic Stainless Steel tubing wall thickness | 0.020″ –0.220″, (special wall thicknesses available) |
| Lenght SS Tube Suppliers in India | Single Random, Double Random, Standard & Cut length |
| Stainless Steel Seamless Tubing Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Martensitic Stainless Steel tube Form | Round, Coil, Square, Rectangular, Boiler, Hydraulic, Straight or ‘U’ bent Tube, Hollow, LSAW Tube Etc. |
| Austenitic Chromium Nickel Stainless Steel Tube Type | Seamless, ERW, EFW, Welded, Fabricated |
| SS Electropolished | (EP) Electropolished for Ultra High Purity Systems |
| Chromium Nickel Stainless Steel Non-Electropolished | (BA) Bright Annealed or (AP) Annealed & Pickled for High-Purity, (CFOS) Cleaned for Oxygen Grade Service or Corrosive Systems |
| Chromium Stainless Steel I.D. Surface Finish Options | 5, 7 & 10 µin. Ra |
| Ferritic Stainless Steel Grade JIS | 8A to 250A |
| Austenitic Stainless Steel Grade Tolerances | In accordance with: ASTM: A269 & A632, JIS: G 3459 |
| Martensitic Stainless Steel Grade tubing End | Plain End, Beveled End, Treaded, Ends are suitable for orbital welding |
| SS Marking | All Stainless Steel Tube are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| Austenitic and Ferritic Stainless Steel tubing Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
| Super Austenitic Stainless Steel Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Super Martensitic Stainless Steel Specialize in | Capillary Tube, stainless steel tube suppliers, stainless steel seamless tube suppliers, stainless steel tubing suppliers, stainless steel seamless tubing suppliers, ss tube suppliers in india & Other Odd Size Heat Exchanger & Condenser Tube Hydraulic tubing with OD up to 50.8 mm (2.0 in.) are delivered in bright annealed condition hydraulic tube with OD larger than 50.8 mm are supplied in the annealed and pickled condition, Or in polished condition |
| Super Ferritic Stainless Steel Marking & Traceability | Each Tubing is traceable to its producing mill and heat by an identification number etched within 24″ (610mm) of one end. |
| Super Ferritic Stainless Steel Grades tubing Test Certificate | suppliers Test Certificate according to EN 10204 3.1 B Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection |
| ASTM A213 Stainless Steel tubing Testing & Inspection | Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing |
| We can also cut, thread, and groove Stainless Steel Tube to meet your specifications | |
Stainless Steel Tube Chemical Composition
AISI TYPE | CHEMISTRY-PERCENT | TYPICAL CHARACTERISTICS | |||||||
|---|---|---|---|---|---|---|---|---|---|
C | Mn | P | S | SI | – CR | NI | OTHER | ||
304 | 0.08 max | 2 max | 0.04 max | 0.03 max | 0.075 max | 18.00 20.00 | 8.00 11.00 | – | General purpose “300” series grade for tubing applications. |
304L | 0.035 max | 2 .00 max | 0.04 max | 0.03 max | 0.75 max | 18.00 20.00 | 8.00 13.00 | – | Low carbon type 304 where greater resistance to carbide precipitation is desired. |
304H | 0.04 0.1 | 2 max | 0.04 max | 0.03 max | 0.75 max | 18.00 20 | 8.00 11 | – | Carbon modified for improved high temperature strength. |
310 | 0.15 max | 2 max | 0.04 max | 0.03 max | 0.75 max | 24.00 26 | 19.00 22 | – | High resistance to scaling and oxida-tion up to 2000°F. |
316 | 008 max | 2.00 max | 0.040 max | 0.030 max | 0.75 max | 16.00 18.00 | 11.00 4.00 | Mo2.00- 3.00 | Better corrosion resistance than type 304 in reducing media. Good hi-temp strength. |
316L | 0.035 max | 2 max | 0.04 max | 0.03 max | 0.75 max | 16.00 18 | 10.00 15 | Mo 2.00 3.00 | Low carbon type 316 where greater resistance to carbide precipitation is desired. |
316H | 0_04 0.10 | I 2.00 max | 0040 max | 0.030 max | 0.75 max | 16.00 18.00 | 11.00 14.00 | Mo2.00-3.00 | Carbon modified for improved temperature strength. |
317 | 0.08 Max | 2 max | 0.04 max | 0.03 max | 0.75 max | 18.00 20 | 11.00 14 | Mo 3.00 4.00 | Similar to type 316 but with better corrosion resistance and creep strength. |
321 | 0.48 max | 203 max | 0.04 max | 0.03 max | 0.75 max | 17.00 20 | 9.00 13 | Ti 5XC-0.60 | Titanium stabilized against carbide precipitation. Similar properties to type 304. |
347 | 0.08 max | 200 max | 0.04 max | 0.03 max | 0.75 max | 17.00 20 | 7.00 13 | Cb + Ta 10XC-1.00 | Columbium and tantalum stabilized against carbide precipitation. |
21-6-9 | 0.04 max | 8.00 max | 60 max | 0.03 max | 1 max | 19.00 21.5 | 5.50 7.5 | N 0.15 0.40 | High strength-to-weight ratio. Good corrosion resistance. |
416 | 0.15 Max | 1.25 max | 0.066 max | 0.15 max | 1.00 max | 12.00 14.00 | — | — | Hardenable by heat treatment. Free machining. Moderate corrosion resistance. |
Stainless Steel Tube Mechanical Properties
TYPE | ITEM PER | NOMINAL MECHANICAL PROPERTIES | |||
|---|---|---|---|---|---|
TENSILE PSI | YIELD PSI | ELONG. % IN 2″ | ROCKWELL HARDNESS | ||
304 | Annealed I 1/8 Hard | 85000 105000 | 35000 75000 | 55 20 | RB80 RB95 |
304L | Annealed 1/8 Hard | 80000 105000 | 30000 75000 | 55 20 | RB75 RB95 |
304H | Annealed | 85,000 | 35,000 | 55 | RB80 |
310 | Annealed | 95,000 | 45,000 | 45 | RB85 |
316 316L 316H | Annealed Annealed Annealed | 85000 80000 85000 | 35000 30000 35000 | 50 50 50 | RB80 RB75 RB80 |
317 | Annealed | 90,000 | 40,000 | 45 | RB85 |
321 | Annealed 1/8 Hard | 90,000 105000 | 35000 75000 | 55 20 | RB80 RB95 |
347 | Annealed | 95,000 | 40,000 | 50 | RB85 |
21-6-9 | Annealed 1/8 Hard | 100000 142000 | 60000 120000 | 45 20 | RB9,0 RC30. |
416 | Annealed | 75,000 | 35,000 | 20 | RB95 |
| Stainless Steel Tube Suppliers Types | Out diameter | Wall thickness | Length |
|---|---|---|---|
| Stainless Steel 400 Welded Tube (in Stock + Custom Sizes) | 5.0mm ~ 1219.2mm | 1.0 ~ 15.0 mm | Upto 6 Meters |
| Stainless Steel 400 Seamless Tube (Custom Sizes) | 5.0mm ~ 203.2mm | As per requirement | Upto 6 Meters |
| NB Sizes (in stock) | 1/8” ~ 8” | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | Upto 6 Meters |
