Stainless Steel 904L Pipes Manufacturer in India
Stainless Steel 904L Pipes Manufacturer in India
Sachiya Steel International is a leading Stainless Steel 904L Pipes Manufacturer in India, supplying quality pipes for industries that need strong and corrosion-resistant materials. Established in 2005, we manufacture, supply, and export stainless steel pipes and tubes for chemical, oil and gas, petrochemical, marine, and pharmaceutical applications. Our pipes are available in different sizes, wall thicknesses, and schedules to meet various industrial needs.
We supply Stainless Steel 904L Pipes according to applicable ASTM and ASME standards. Popular sizes are available from ready stock, subject to availability, while other sizes can be arranged as required. Our certifications include ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, PED 2014/68/EU, and applicable TÜV approvals. Every order comes with an EN 10204 Type 3.1 material test certificate, while Type 3.2 certificates and third-party inspections are available on request. With monthly supply capabilities of up to 100 tons and exports to 85+ countries, we support industrial piping requirements in India and worldwide.
What Are Stainless Steel 904L Pipes?
Stainless Steel 904L Pipes are pipes made from a high-alloy austenitic stainless steel, UNS N08904, with about 25% nickel, 20% chromium, 4.5% molybdenum and 1.5% copper. It sits in the group called super-austenitic stainless steels, a step above 316L in alloy content.
Nickel and molybdenum give it strong resistance to pitting and crevice corrosion in chloride fluids. Copper gives it unusual resistance to sulphuric acid. Its carbon content is very low, so it resists attack at welds. The pipe can be seamless or welded, and both are solution annealed, then pickled to a clean surface. 904L is non-magnetic, as austenitic steels are.
Stainless Steel 904L Pipes
High-quality Stainless Steel 904L pipes manufactured for demanding applications across chemical, petrochemical, oil and gas, pharmaceutical, marine and engineering industries. Available in multiple sizes, wall thicknesses and ASTM specifications.
Types of Stainless Steel 904L Pipes
Stainless Steel 904L Pipes Manufacturers offer different pipe types based on manufacturing methods, wall thicknesses, and surface finishes to meet various industrial requirements.
- Seamless 904L Pipes: Manufactured from solid billets without a welded seam, suitable for applications requiring reliable pressure performance.
- Welded 904L Pipes: Made by forming and welding stainless steel strip or plate, commonly used for larger diameters and industrial process lines.
- Large-Diameter Welded Pipes: Designed for applications requiring wider pipe dimensions, including industrial headers and process systems.
- Thin-Wall Pipes: Available in suitable Schedule 5S and 10S dimensions for applications where lighter pipe walls meet design requirements.
- Standard-Wall Pipes: Schedule 40S pipes are used in various industrial process piping systems.
- Heavy-Wall Pipes: Schedule 80S pipes provide thicker walls for applications requiring specific pressure and mechanical requirements.
- Solution-Annealed and Pickled Pipes: Heat-treated and surface-cleaned to support corrosion resistance and provide a clean finish.
- Plain-End and Bevelled-End Pipes: Supplied with suitable end preparation for installation and welding, according to project specifications.
A reliable Stainless Steel 904L Pipes Manufacturer can supply the appropriate pipe type, dimensions, and finish according to applicable standards and industrial requirements.
UNS N08904 (1.4539) Stainless Steel 904L Pipes Manufacturers and Suppliers in India
We are a manufacturer and supplier of Stainless Steel 904L Pipes in India, available under international designations such as UNS N08904, EN 1.4539, X1NiCrMoCu25-20-5, and Werkstoff No. 1.4539. Stainless Steel 904L is a high-alloy austenitic stainless steel known for its excellent corrosion resistance in aggressive environments, including many chemical processing applications. These pipes are widely used in chemical, petrochemical, pharmaceutical, marine, and industrial applications where durability and reliable performance are essential.
We offer a wide range of Stainless Steel 904L Pipes in different sizes and specifications, with popular sizes available from ready stock, subject to availability. Custom sizes and other stainless steel grades or nickel alloys can be supplied on request. We help verify material designations and applicable standards, including ASTM A312, ASTM B677, and EN 10216-5, according to project requirements. Contact us with your required dimensions, quantity, and material standard for pricing and availability.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
Pipes and Tubes
→
Seamless Pipes
→
ERW Pipes
→
LSAW Pipes
→
SSAW Pipes
→
Seamless Tubes
→
Welded Pipes
→
Welded Tubes
→
Box Pipes
→
Box Tubes
→
Brass Pipes
→
Heat Exchanger Tubes
→
Boiler Tubes
→
Aluminium Pipes
→
Carbon Steel Seamless Pipes
→
Carbon Steel Pipe
→
Stainless Steel Pipe
→
Alloy Steel Pipe
→
Duplex Steel Pipe
→
Super Duplex Steel Pipe
→
Nickel Alloy Pipe
→
Copper Nickel Alloy Pipe
→Get Certified IStainless Steel 904L Pipes at Competitive Factory Prices
Stainless Steel 904L Pipes Specification
The table sums up how we describe a Stainless Steel 904L Pipes order.
| Item | Detail |
|---|---|
| Product | Stainless Steel 904L Pipes |
| Alloy | UNS N08904, EN 1.4539 |
| Forms | Seamless, or welded from strip or plate |
| Pipe standards | ASTM A312 / ASME SA312, ASTM B677 / SB677, ASTM B673, ASTM A358, ASTM A409, EN 10216-5, EN 10217-7 |
| General requirements | ASTM A999 |
| Size basis | NPS and schedule, or OD and wall in mm |
| Size range shown | NPS 1/2 to 12, larger sizes in welded form on request |
| Schedules | Sch 5S, 10S, 40S, 80S; other walls on request |
| Lengths | Single random, double random or cut length |
| Ends | Plain or bevelled |
| Heat treatment | Solution annealed and quenched at 1,100°C or above |
| Surface | Pickled and passivated |
| Tests | Chemical analysis, tensile, flattening, hydrostatic or non-destructive test |
| Certificate | EN 10204 3.1 with every order, 3.2 on request |
| Inspection | Third-party inspection on request |
Stainless Steel 904L Pipes Standards and Specifications
904L pipe is bought to a pipe standard, a general requirements standard and a design code. The table shows how each is used.
| Standard | What it covers | Where it applies |
|---|---|---|
| ASTM A312 / ASME SA312 | Seamless, welded and cold-worked austenitic stainless pipe | Core 904L pipe standard |
| ASTM B677 / ASME SB677 | Seamless UNS N08904 and N08925 pipe and tube | Seamless 904L pipe |
| ASTM B673 | Welded UNS N08904 pipe | Welded 904L pipe |
| ASTM A358 | Electric-fusion-welded austenitic pipe for high-temperature service | Welded pipe with weld classes |
| ASTM A409 | Welded large-diameter austenitic pipe for corrosive or high-temperature service | Large thin-wall pipe |
| ASTM A999 | General requirements for alloy and stainless pipe | Tolerances and test rules |
| EN 10216-5 | Seamless stainless steel tubes for pressure purposes | EN-code projects |
| EN 10217-7 | Welded stainless steel tubes for pressure purposes | EN-code welded pipe |
| ASME B36.19M | Stainless steel pipe dimensions | Sch 5S, 10S, 40S, 80S walls |
| ASME B16.25 | Butt-welding ends | Bevel angle and root face |
| ASME B31.3 | Process piping design code | Wall and allowable stress by your engineer |
| EN 10204 | Types of inspection documents | 3.1 and 3.2 certificates |
Stainless Steel 904L Pipes Material and Grades
The table lists the 904L designations across standards, with the main properties that set the grade apart.
| Item | Detail |
|---|---|
| UNS | N08904 |
| EN number / name | 1.4539 / X1NiCrMoCu25-20-5 |
| Common names | 904L, SS 904L, Alloy 904L |
| Structure | Fully austenitic, non-magnetic |
| PREN (about) | 35 |
| Key strengths | Sulphuric, phosphoric and acetic acid; chloride pitting and crevice resistance |
| Density | About 8.00 g/cm³ |
| Typical use | Acid piping, chemical plants, seawater-cooled and marine systems |
What Is the Difference Between Stainless Steel 904L Pipes and Stainless Steel 316L Pipes?
The short answer: 904L has about twice the nickel and molybdenum of 316L, plus copper. That gives it far better resistance to sulphuric acid and to chloride pitting and crevice corrosion. It also costs much more, so 316L stays the choice for milder duty.
| Factor | Stainless Steel 904L Pipes | Stainless Steel 316L Pipes |
|---|---|---|
| Nickel | 23 to 28% | 10 to 14% |
| Chromium | 19 to 23% | 16 to 18% |
| Molybdenum | 4 to 5% | 2 to 3% |
| Copper | 1 to 2% | None |
| PREN (about) | 35 | 24 |
| Sulphuric acid | Good across wide ranges | Limited |
| Chloride pitting and crevice | Much better | Limited |
| Yield strength, minimum | 215 MPa | 170 MPa |
| Cost | Much higher | Lower |
| Typical use | Acid, severe chloride, marine | General process, food, water |
Stainless Steel 904L Pipes Chemical Composition
Chemistry gives 904L its corrosion resistance. Molybdenum and copper do the heavy lifting in acids, and very low carbon protects the weld zone. The table shows the ASTM A312 limits. Values are percentage by weight, maximum unless shown as a range.
| Element | Content (%) | Role |
|---|---|---|
| Nickel (Ni) | 23.0–28.0 | Keeps the structure austenitic, resists cracking |
| Chromium (Cr) | 19.0–23.0 | Builds the protective surface film |
| Molybdenum (Mo) | 4.0–5.0 | Resists pitting and crevice corrosion |
| Copper (Cu) | 1.00–2.00 | Resists sulphuric acid |
| Nitrogen (N) | 0.10 max | Adds strength and pitting resistance |
| Carbon (C) | 0.020 max | Kept low to resist weld-zone attack |
| Manganese (Mn) | 2.00 max | Deoxidiser |
| Silicon (Si) | 1.00 max | Deoxidiser |
| Phosphorus (P) | 0.040 max | Kept low for toughness |
| Sulphur (S) | 0.030 max | Kept low for corrosion resistance |
| Iron (Fe) | Balance | Base metal |
Stainless Steel 904L Pipes Mechanical Properties
Mechanical properties show the strength of the pipe after solution annealing. The first table gives the minimum values under ASTM A312 and EN 10216-5.
| Standard | Yield min, MPa (ksi) | Tensile, MPa (ksi) | Elongation min (%) |
|---|---|---|---|
| ASTM A312 / B677 | 215 (31) | 490 (71) min | 35 |
| EN 10216-5 (1.4539) | 220 | 520–720 | 35 |
The second table gives typical physical properties.
| Property | Typical value |
|---|---|
| Density | About 8.00 g/cm³ |
| Thermal conductivity | About 12 W/m·K |
| Thermal expansion (20–100°C) | About 15.8 µm/m·K |
| Modulus of elasticity | About 195 GPa |
| Magnetic behaviour | Non-magnetic |
Stainless Steel 904L Pipes Size and Weight Chart
Weight depends on OD and wall, and the wall depends on the schedule. 904L has a density of about 8.00 g/cm³, so we use this formula:
OD and wall are in mm. Example: NPS 3 Sch 10S is (88.9 − 3.05) × 3.05 × 0.02513 = 6.58 kg/m. The next section lists the wall for each schedule.
| NPS | OD (mm) | Sch 5S (kg/m) | Sch 10S (kg/m) | Sch 40S (kg/m) |
|---|---|---|---|---|
| 1/2" | 21.3 | 0.81 | 1.02 | 1.29 |
| 3/4" | 26.7 | 1.04 | 1.30 | 1.72 |
| 1" | 33.4 | 1.32 | 2.13 | 2.55 |
| 1-1/2" | 48.3 | 1.93 | 3.17 | 4.13 |
| 2" | 60.3 | 2.43 | 4.00 | 5.54 |
| 3" | 88.9 | 4.60 | 6.58 | 11.51 |
| 4" | 114.3 | 5.95 | 8.53 | 16.38 |
| 6" | 168.3 | 11.52 | 14.09 | 28.80 |
| 8" | 219.1 | 15.06 | 20.35 | 43.36 |
| 10" | 273.1 | 23.04 | 28.31 | 61.46 |
| 12" | 323.9 | 31.84 | 36.67 | 75.29 |
Available Sizes, Dimensions and Schedules
Stainless Steel 904L Pipes follow the schedules of ASME B36.19M. The chart above covers NPS 1/2 to 12, and other sizes and walls can be quoted on request. Because 904L is costly, many designs use thin walls such as Sch 5S and 10S. Your engineer should confirm the wall against the design code. The table gives the wall for each schedule.
| NPS | OD (mm) | Sch 5S wall (mm) | Sch 10S wall (mm) | Sch 40S wall (mm) | Sch 80S wall (mm) |
|---|---|---|---|---|---|
| 1/2" | 21.3 | 1.65 | 2.11 | 2.77 | 3.73 |
| 3/4" | 26.7 | 1.65 | 2.11 | 2.87 | 3.91 |
| 1" | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 |
| 1-1/2" | 48.3 | 1.65 | 2.77 | 3.68 | 5.08 |
| 2" | 60.3 | 1.65 | 2.77 | 3.91 | 5.54 |
| 3" | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 |
| 4" | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 |
| 6" | 168.3 | 2.77 | 3.40 | 7.11 | 10.97 |
| 8" | 219.1 | 2.77 | 3.76 | 8.18 | 12.70 |
| 10" | 273.1 | 3.40 | 4.19 | 9.27 | 12.70 |
| 12" | 323.9 | 3.96 | 4.57 | 9.53 | 12.70 |
Tolerances follow ASTM A999. The wall may run up to 12.5% under nominal, and the OD limit grows with pipe size, from +0.4 / −0.8 mm in small sizes to +1.6 / −0.8 mm between NPS 4 and 8.
Stainless Steel 904L Pipes Common Grades
We are manufacturers and Stainless Steel 904L Pipes Suppliers, offering pipes in internationally recognized material grades to meet diverse industrial requirements. Our product range includes UNS N08904, EN 1.4539, and X1NiCrMoCu25-20-5, helping customers select the appropriate material designation according to their project specifications and applicable standards.
UNS N08904: Stainless Steel 904L Pipes supplied under this American material designation.
EN 1.4539: European material grade for Stainless Steel 904L.
X1NiCrMoCu25-20-5: European designation for this corrosion-resistant alloy.
Werkstoff No. 1.4539: German material number for Stainless Steel 904L.
SS 904L and Alloy 904L: Common industry designations used for pipes in chemical, petrochemical, marine, and other industrial applications.
We offer various sizes and specifications, with popular sizes available from ready stock, subject to availability, and other dimensions arranged on request.
Stainless Steel 904L Pipes We Manufacture and Supply
We make Stainless Steel 904L Pipes for the services below. The wall and the form follow the fluid and the pressure.
| Service | Form | Typical wall |
|---|---|---|
| Sulphuric acid lines | Seamless or welded | Sch 10S to 40S |
| Phosphoric acid and fertiliser lines | Seamless or welded | Sch 10S to 40S |
| Seawater-cooled and marine systems | Seamless | Sch 10S to 40S |
| Flue gas desulphurisation ducts | Large-diameter welded | Sch 5S to 10S |
| Pharmaceutical and chemical utility lines | Seamless or welded | Sch 5S to 40S |
Applications of Stainless Steel 904L Pipes
- Chemical and petrochemical plants: Sulphuric, phosphoric, acetic and formic acid lines.
- Fertiliser plants: Phosphoric acid and acid-bearing process piping.
- Oil and gas: Chloride-bearing process lines and heat exchanger piping.
- Marine and offshore: Seawater-cooled systems, scrubbers and utility lines.
- Desalination plants: Brine and seawater lines where 316L is not enough.
- Pharmaceutical plants: Corrosive process and utility lines.
- Power generation: Flue gas desulphurisation and cooling water lines.
- Pulp and paper mills: Bleach plant and liquor lines.
Why Choose Us as Your Stainless Steel 904L Pipes Supplier in India?
Established in 2005, we bring over 20 years of experience in manufacturing, supplying, and exporting industrial pipes and tubes. Our Stainless Steel 904L Pipes range includes UNS N08904, EN 1.4539, X1NiCrMoCu25-20-5, and Werkstoff No. 1.4539 for chemical processing, petrochemical, pharmaceutical, marine, and other demanding industrial applications. We offer various outside diameters, wall thicknesses, schedules, and lengths according to project specifications, with popular sizes available from ready stock, subject to availability. Our monthly supply capacity reaches up to 100 tons, and we serve customers across 85+ countries.
Quality, certification, and material traceability remain central to our operations. Our certifications include ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, PED 2014/68/EU, and applicable TÜV approvals. Every order includes an EN 10204 Type 3.1 material test certificate, while Type 3.2 certification and third-party inspection are available on request. These capabilities make us a Stainless Steel 904L Pipes Supplier in India, supporting bulk orders, international supply requirements, and project-specific piping specifications.
Countries We Export Stainless Steel 904L Pipes To
We export Stainless Steel 904L Pipes to customers across 85+ countries, supplying international markets with corrosion-resistant piping solutions for chemical processing, fertiliser, petrochemical, marine, and other industrial applications. Our export range includes UNS N08904 and EN 1.4539 pipes in various sizes and specifications to meet project requirements.
Gulf and Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait and Bahrain
Europe: Germany, Italy, United Kingdom, Netherlands, France, Norway and Spain
Southeast Asia and Oceania: Singapore, Malaysia, Indonesia, Thailand, Vietnam and Australia
Africa: South Africa, Nigeria, Egypt and Kenya
Americas: USA, Canada, Mexico and Brazil
As an experienced Stainless Steel 904L Pipes Supplier, we support international buyers with material documentation, export packing, and shipping coordination according to order requirements. We cater to bulk orders, industrial projects, and customized piping specifications, helping customers source the required grades and dimensions for their applications.
Stainless Steel 904L Pipes FAQs
Common questions about 904L pipe applications, material selection, welding, dimensions, and supply.
Which fluids is 904L best for?
It is best for sulphuric acid, phosphoric acid, acetic acid and chloride-bearing fluids that corrode 316L. Always check the acid strength and temperature against corrosion data for your case.
How do I choose between 904L and 316L?
Choose 316L for mild chloride and general process duty. Choose 904L when 316L pits, or when sulphuric or phosphoric acid is present, and accept the higher cost.
How does 904L compare with duplex 2205?
Both have a PREN near 35. Duplex 2205 is stronger and costs less, but 904L resists sulphuric acid better and has no ferrite, so it suits acid duty. Duplex suits chloride cracking and high-pressure duty.
How should I weld 904L pipe?
Use a matching filler such as ER385, or an over-alloyed nickel filler, with low heat input and a qualified procedure. Post-weld heat treatment is not normally needed, and the joint should be pickled and passivated.
Can 904L be used at high temperature?
It is made mainly for corrosion service at moderate temperature. Long exposure between roughly 600°C and 900°C can form brittle phases, so check the limit with your design code.
Why is pickling and passivation needed?
Pickling removes heat tint and scale, and passivation restores the protective surface film. Both help the pipe resist corrosion from the first day in service.
What tolerances apply to OD and wall?
ASTM A999 sets them. The wall may run up to 12.5% under nominal, and OD limits depend on the pipe size.
What sizes can I order?
The charts above cover NPS 1/2 to 12 in Sch 5S, 10S, 40S and 80S. Larger sizes in welded form and other walls can be quoted on request.
How do I calculate the weight of an order?
Use Weight (kg/m) = (OD − Wall) × Wall × 0.02513, with OD and wall in mm. Multiply by length and quantity. Real weight varies slightly with wall tolerance.
What affects the price of Stainless Steel 904L Pipes?
Nickel and molybdenum prices set most of the cost. Size, wall, form (seamless or welded), testing, inspection, quantity and freight also count.