Corten Steel Pipes Manufacturer in India
Corten Steel Pipes Manufacturer in India
Stainless Steel Pipe Manufacturers is a leading Corten Steel Pipes Manufacturer in India, established in 2005 with 20+ years of experience in manufacturing and supplying industrial pipes and tubes. Our facility is located near Mumbai, with an export office in Mumbai, and we supply Corten steel pipes to customers across 85+ countries for architectural, infrastructure, landscaping, power, and industrial applications.
We manufacture and supply Corten steel pipes in grades such as ASTM A588 Grade A and B, ASTM A242 Type 1, ASTM A847, EN 10025-5 S355J0W and S355J2W, according to the required specification and application. Our quality systems include ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, PED 2014/68/EU and TÜV approvals. EN 10204 3.1 certification is supplied with every order, while 3.2 certification and third-party inspection can be arranged on request. Popular sizes may be available from ready stock, subject to availability, with export packing and documentation handled according to the destination.
What Are Corten Steel Pipes?
Corten steel pipes are pipes made from weathering steel, a type of low-alloy steel that naturally develops a protective rust-like surface when exposed to outdoor weather. This layer, called a patina, helps protect the steel from further corrosion and gives the pipe its well-known brown, weathered appearance.
The steel contains small amounts of copper, chromium, nickel, and phosphorus, which help the protective surface form and stay attached to the pipe. Unlike ordinary rust, the patina is more stable and slows down further corrosion. Corten steel pipes are also stronger than standard mild steel and are commonly used for bridges, buildings, outdoor structures, landscaping, towers, and industrial projects where durability and a natural weathered finish are required.
Corten Steel Pipes
High-quality Corten Steel Pipes manufactured for demanding applications across construction, structural, architectural, transportation, infrastructure and engineering industries. Available in multiple grades, sizes, wall thicknesses and specifications.
Types of Corten Steel Pipes
As a Corten Steel Pipes Manufacturer, we supply different grades, manufacturing methods, sizes, and end finishes for structural, architectural, and industrial applications. Our range includes:
- ASTM A588 Corten Pipes: Grade A and Grade B weathering steel with a minimum yield strength of 345 MPa.
- ASTM A242 Corten Pipes: Type 1 high-strength low-alloy weathering steel for structural applications.
- ASTM A847 Corten Pipes: Cold-formed and seamless high-strength low-alloy structural tubing with improved atmospheric corrosion resistance.
- EN 10025-5 S355W Corten Pipes: S355J0W and S355J2W grades for European structural projects.
- EN 10025-5 S235W Corten Pipes: S235J0W and S235J2W grades for lighter structural applications.
- Seamless Corten Pipes: Manufactured from solid billets without a weld seam for structural and demanding service requirements.
- Welded Corten Pipes: Formed from steel plate or strip and welded, suitable for larger diameters and structural applications.
- Round Structural Corten Pipes: Specified by outside diameter and wall thickness for columns, posts, frames, and other structures.
- Black-Finish Corten Pipes: Supplied in the mill finish so the natural weathered patina can develop after outdoor exposure.
- Plain-End and Bevelled-End Corten Pipes: Supplied with the required end preparation for welding and fabrication.
ASTM A588, A242, A847 and EN 10025-5 S355 W Corten Steel Pipes Manufacturers and Suppliers in India
We manufacture and supply Corten Steel Pipes in the main weathering steel standards. The right grade depends on the design code, the wall thickness and the exposure.
- ASTM A588 Gr A and Gr B: the most widely specified weathering steel for bridges and buildings, with yield of 345 MPa up to 100 mm thickness.
- ASTM A242 Type 1: a higher-phosphorus weathering steel for lighter structural use.
- ASTM A847: the standard for weathering steel tubing, including seamless tubing.
- EN 10025-5 S355J0W and S355J2W: European weathering steel with guaranteed impact values at 0 °C and −20 °C.
- EN 10025-5 S235J0W and S235J2W: lower-strength weathering grades for lighter members.
These pipes are available in different outside diameters, wall thicknesses and lengths according to the required specification.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
Pipes and Tubes
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Brass Pipes
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Carbon Steel Seamless Pipes
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Carbon Steel Pipe
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Stainless Steel Pipe
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Alloy Steel Pipe
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Duplex Steel Pipe
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Super Duplex Steel Pipe
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Nickel Alloy Pipe
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Copper Nickel Alloy Pipe
→Get Certified Corten Steel Pipes at Competitive Factory Prices
Corten Steel Pipes Specification
The table sets out the working specification.
| Item | Detail |
|---|---|
| Product | Corten Steel Pipes |
| Process | Seamless (hot finished) or welded |
| Grades | ASTM A588 Gr A, B, ASTM A242 Type 1, ASTM A847, EN S355J0W, S355J2W, S235J0W, S235J2W |
| Standards | ASTM A588, A242, A847, EN 10025-5 |
| Dimensions | ASME B36.10M (Sch 10, 40, 80) or OD × wall as per drawing |
| Size reference | NPS 1/2 to 8 in the tables, other sizes on request |
| Length | Single random, double random or cut length |
| Ends | Plain or bevelled |
| Surface | Black, as rolled |
| Tests | Chemical analysis, tensile, flattening or bend, hydrostatic or non-destructive test; impact test on request |
| Certificate | EN 10204 3.1 with every order, 3.2 on request |
| Inspection | Third-party inspection on request |
Corten Steel Pipes Standards and Specifications
Corten steel pipe is bought to a weathering steel standard, with test methods and corrosion references behind it. The table links each one to its job.
| Standard | Scope | Where it applies |
|---|---|---|
| ASTM A588 | High-strength low-alloy structural steel with 345 MPa minimum yield | Weathering steel for bridges and buildings |
| ASTM A242 | High-strength low-alloy structural steel | Weathering steel, Type 1 |
| ASTM A847 | Cold-formed welded and seamless HSLA structural tubing with improved atmospheric corrosion resistance | Corten tubes and pipes |
| EN 10025-5 | Technical delivery conditions for structural steels with improved atmospheric corrosion resistance | S235 W and S355 W grades |
| ASME B36.10M | Pipe dimensions and weights | OD and wall reference |
| ASTM A370 | Mechanical testing of steel products | Tensile and impact tests |
| ASTM A751 | Chemical analysis of steel products | Chemistry checks |
| ASTM G101 | Guide for estimating atmospheric corrosion resistance of low-alloy steels | Weathering performance |
| ISO 9223 | Corrosivity of atmospheres | Exposure category |
| EN 10204 | Types of inspection documents | 3.1 and 3.2 certificates |
Corten Steel Pipes Material and Grades
Pick the grade by the design code, wall thickness and exposure. The table lists the common grades with their EN numbers and minimum yield strength.
| Grade | Standard | EN number | Minimum yield | Typical use |
|---|---|---|---|---|
| A588 Gr A | ASTM A588 | Closest: S355J2W (1.8965) | 345 MPa | Bridges, buildings, towers |
| A588 Gr B | ASTM A588 | Closest: S355J2W (1.8965) | 345 MPa | Heavier structural members |
| A242 Type 1 | ASTM A242 | — | 345 MPa | Lighter structural use |
| A847 | ASTM A847 | — | 345 MPa | Structural tubing and pipes |
| S235J0W | EN 10025-5 | 1.8958 | 235 MPa | Lighter members |
| S235J2W | EN 10025-5 | 1.8961 | 235 MPa | Lighter members, colder climates |
| S355J0W | EN 10025-5 | 1.8959 | 355 MPa | General structures |
| S355J2W | EN 10025-5 | 1.8965 | 355 MPa | Structures in colder climates |
| S355K2W | EN 10025-5 | 1.8967 | 355 MPa | Higher impact requirement |
What Is the Difference Between Corten Steel Pipes and Mild Steel Pipes?
The short answer: Corten steel forms a protective rust layer and needs no paint in most open-air uses, while mild steel rusts steadily and needs paint or galvanising. Corten also has higher strength, but it costs more and does not suit constant wetness, buried service or heavy salt exposure.
| Point | Corten Steel Pipes | Mild Steel Pipes |
|---|---|---|
| Alloying | Copper, chromium, nickel, phosphorus | Little or none |
| Rust behaviour | Forms a tight, protective patina | Forms loose, flaking rust |
| Painting | Not needed in most open-air uses | Needed for lasting protection |
| Minimum yield | About 345 MPa | About 235 MPa |
| Maintenance | Low | Repainting at intervals |
| Constant wetness or soil contact | Not suitable | Painted or coated |
| Heavy salt exposure | Needs careful review | Painted or coated |
| Cost | Higher | Lower |
| Common standards | ASTM A588, A242, A847, EN 10025-5 | ASTM A53, A106, EN 10210 |
| Typical use | Bridges, façades, towers, landscape | General fabrication, piping |
Corten Steel Pipes Chemical Composition
Chemistry gives Corten steel its weathering behaviour. The table shows the limits, one element per row. Values are percentage by weight, maximum unless shown as a range or marked "min". ASTM A847 pipe follows its own composition table, and your EN 10204 3.1 certificate shows the actual heat analysis.
| Element | ASTM A242 Type 1 | ASTM A588 Gr A | ASTM A588 Gr B | EN S355J0W | EN S355J2W |
|---|---|---|---|---|---|
| Carbon (C) | 0.15 | 0.19 | 0.20 | 0.16 | 0.16 |
| Manganese (Mn) | 1.00 | 0.80–1.25 | 0.75–1.35 | 0.50–1.50 | 0.50–1.50 |
| Silicon (Si) | — | 0.30–0.65 | 0.15–0.50 | 0.50 | 0.50 |
| Phosphorus (P) | 0.15 | 0.030 | 0.030 | 0.035 | 0.030 |
| Sulphur (S) | 0.05 | 0.030 | 0.030 | 0.035 | 0.030 |
| Chromium (Cr) | — | 0.40–0.65 | 0.40–0.70 | 0.40–0.80 | 0.40–0.80 |
| Nickel (Ni) | — | 0.40 | 0.50 | 0.65 | 0.65 |
| Copper (Cu) | 0.20 min | 0.25–0.40 | 0.20–0.40 | 0.25–0.55 | 0.25–0.55 |
| Vanadium (V) | — | 0.02–0.10 | 0.01–0.10 | — | — |
| Nitrogen (N) | — | — | — | 0.009 | 0.009 |
Corten Steel Pipes Mechanical Properties
Mechanical properties depend on the grade and the wall thickness. The table gives minimum values, with one property per row.
| Property | ASTM A242 | ASTM A588 | ASTM A847 | EN S355J0W | EN S355J2W |
|---|---|---|---|---|---|
| Yield strength, MPa (ksi) | 345 (50) | 345 (50) | 345 (50) | 355 | 355 |
| Tensile strength, MPa (ksi) | 485 (70) | 485 (70) | 485 (70) | 470–630 | 470–630 |
| Elongation, % | 21 (in 50 mm) | 21 (in 50 mm) | — | 22 | 22 |
| Impact test (Charpy V), min | — | On request | — | 27 J at 0 °C | 27 J at −20 °C |
Values apply to walls up to 19 mm for ASTM A242, 100 mm for ASTM A588, and 16 mm for the EN grades. Thicker walls carry slightly lower minimum yield values under each standard.
Corten Steel Pipes Size and Weight Chart
Weight depends on OD and wall thickness. Weathering steel has a density of about 7.85 g/cm³, so we use this formula:
OD and wall are in mm. Example: NPS 2 Sch 40 is (60.3 − 3.91) × 3.91 × 0.02466 = 5.44 kg/m. Multiply by length for total weight. Walls for each schedule are listed in the next section.
| NPS | OD (mm) | Sch 10 (kg/m) | Sch 40 (kg/m) | Sch 80 (kg/m) |
|---|---|---|---|---|
| 1/2" | 21.3 | 1.00 | 1.27 | 1.62 |
| 1" | 33.4 | 2.09 | 2.50 | 3.24 |
| 2" | 60.3 | 3.93 | 5.44 | 7.48 |
| 3" | 88.9 | 6.46 | 11.29 | 15.27 |
| 4" | 114.3 | 8.37 | 16.07 | 22.32 |
| 6" | 168.3 | 13.83 | 28.26 | 42.56 |
| 8" | 219.1 | 19.97 | 42.55 | 64.64 |
Available Sizes, Dimensions and Schedules
Corten Steel Pipes follow ASME B36.10M for Sch 10, 40 and 80, and other ODs and walls can be made to your drawing. Architects and structural designers often order round pipes by OD and wall in mm, so quote the size either way. A schedule is a wall-thickness code, so for the same OD a higher number means a thicker wall. Confirm the wall against your structural design code.
| NPS | OD (mm) | Sch 10 (mm) | Sch 40 (mm) | Sch 80 (mm) |
|---|---|---|---|---|
| 1/2" | 21.3 | 2.11 | 2.77 | 3.73 |
| 1" | 33.4 | 2.77 | 3.38 | 4.55 |
| 2" | 60.3 | 2.77 | 3.91 | 5.54 |
| 3" | 88.9 | 3.05 | 5.49 | 7.62 |
| 4" | 114.3 | 3.05 | 6.02 | 8.56 |
| 6" | 168.3 | 3.40 | 7.11 | 10.97 |
| 8" | 219.1 | 3.76 | 8.18 | 12.70 |
Tolerances on OD, wall and length follow the product standard and depend on pipe size. Tell us if your drawing calls for closer limits.
Common Materials in Corten Steel Pipes
Our range of Corten Steel Pipes includes commonly specified weathering steel materials for structural, architectural, and outdoor applications. Different grades are selected according to the required strength, design standard, wall thickness, and service conditions.
ASTM A588 Grade A: Widely used weathering steel with copper and chromium additions that help form a stable protective patina.
ASTM A588 Grade B: Weathering steel grade with a minimum yield strength of 345 MPa, commonly used for structural applications.
ASTM A242 Type 1: High-strength weathering steel used for structural and architectural requirements.
ASTM A847: Weathering steel tubing specification for structural hollow sections with improved atmospheric corrosion resistance.
EN S355J0W (1.8959): European weathering steel grade with impact testing at 0°C.
EN S355J2W (1.8965): European weathering steel grade with impact testing at −20°C.
EN S355K2W (1.8967): European weathering steel grade with higher impact toughness requirements.
EN S235J2W (1.8961): Lower-strength weathering steel grade for lighter structural applications.
These materials are available through our Corten Steel Pipes Suppliers network based on the required grade, dimensions, quantity, and project specification.
Corten Steel Pipes We Manufacture and Supply
We make Corten Steel Pipes for the jobs below. The grade and wall follow the load and the exposure.
| Use | Typical grade | Typical form |
|---|---|---|
| Bridge railings and structural members | ASTM A588 Gr A, B | Seamless or welded |
| Building columns and façade frames | S355J2W, ASTM A588 | Round structural pipe |
| Transmission and telecom towers | ASTM A588, S355J2W | Round structural pipe |
| Chimney and stack sections | ASTM A588 | Welded |
| Landscape, sculpture and fencing | ASTM A242, A588 | Round pipe, light wall |
| Industrial and power plant structures | S355J0W, ASTM A588 | Seamless or welded |
Applications of Corten Steel Pipes
- Architecture: Columns, façade frames, handrails and canopy supports with a natural rust finish.
- Bridges: Railings, truss members and structural supports that need little upkeep.
- Transmission towers: Pole and lattice members in power and telecom networks.
- Landscape and public art: Sculpture frames, planters, fencing and street furniture.
- Power plants: Structural frames and walkway supports.
- Industrial buildings: Columns and bracing in factories and warehouses.
- Chimneys and flues: Stack sections where weathering resistance is useful.
- Railway and infrastructure: Signal gantries and station structures.
- Water and wastewater plants: Exposed railings and frames above splash zones.
Why Choose Us as Your Corten Steel Pipes Manufacturer in India?
With over two decades of experience in the pipes and tubes industry, we have been manufacturing and supplying Corten Steel Pipes since 2005 for architectural, structural, infrastructure, landscaping, power, and industrial applications. Our experience covers different weathering steel grades, sizes, wall thicknesses, lengths, and specifications, including ASTM A588, ASTM A242, ASTM A847, S355J0W, and S355J2W. We can also handle project-specific dimensions and end finishes according to the required standard.
Our quality systems include ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018, along with PED 2014/68/EU and TÜV approvals. EN 10204 3.1 certification is supplied with every order, while 3.2 certification and third-party inspection can be arranged on request. Popular sizes may be available from ready stock, subject to availability, helping us support both regular and urgent requirements.
With our facility near Mumbai and export office in Mumbai, we supply Corten Steel Pipes to customers across 85+ countries. We manage export packing, documentation, and shipment requirements for international orders. Our focus on grade selection, customized requirements, quality documentation, inspection support, and reliable supply makes us a dependable Corten Steel Pipes Supplier in India for standard and project-based requirements.
Countries We Export Corten Steel Pipes To
We are Corten Steel Pipes Suppliers serving customers across 85+ countries, with export orders covering architectural, structural, infrastructure, landscaping, power, and industrial projects. We work with international specifications and arrange material certification, inspection, export packing, and shipping documentation according to each order and destination.
Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait and Bahrain.
Europe: Germany, Italy, United Kingdom, Netherlands, France, Spain and Belgium.
Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan and Australia.
North and South America: USA, Canada, Mexico and Brazil.
Africa: South Africa, Nigeria, Egypt and Kenya.
For overseas requirements, EN 10204 3.1 certification is supplied with every order. EN 10204 3.2 certification and third-party inspection can be arranged when specified. Export packing and shipping documentation are handled according to the order and destination, supporting the supply of Corten Steel Pipes from India to international project locations.
Corten Steel Pipes FAQs
Common questions about Corten steel pipe grades, patina formation, coastal exposure, welding, and supply.
Which Corten standard should I choose?
Choose ASTM A588 for bridges and buildings built to US codes, and EN 10025-5 S355J2W for European projects. ASTM A847 is the tubing standard for pipes, and ASTM A242 suits lighter structural use. Follow your project specification.
How does Corten steel form its protective layer?
The alloying elements help rust build up as a dense, tightly bonded layer during repeated wet and dry cycles. That layer slows oxygen and water from reaching the steel underneath.
Do Corten steel pipes need painting?
Not in most open-air uses, because the patina protects the steel. Paint is optional for colour or for harsh areas, and a coating system must be chosen for weathering steel.
Can Corten steel be used near the coast?
Use caution. Chloride from salt spray can stop the patina from sealing properly. Check the exposure against ISO 9223 and ASTM G101, and ask your designer to confirm the grade and coating.
Does rust run-off stain nearby surfaces?
Yes, especially in the first year or two. Plan drainage and protect adjacent concrete, stone and paving from rust run-off.
How should I weld Corten steel pipes?
Use a weathering filler metal matched to the steel, such as E8018-W2 electrodes or ER80S-Ni1 wire, with a clean joint and the preheat your procedure requires. Matching filler keeps the weld's colour and weathering behaviour close to the pipe.
What sizes and schedules can I order?
The tables above cover NPS 1/2 to 8 in Sch 10, 40 and 80. Other sizes and walls can be quoted on request, and popular sizes sit in ready stock, subject to availability.
How do I calculate the weight of an order?
Use Weight (kg/m) = (OD − Wall) × Wall × 0.02466, with OD and wall in mm. Multiply by length and quantity. Real weight varies slightly with wall tolerance.
Are you a manufacturer or a supplier of Corten Steel Pipes?
We are both. We manufacture near Mumbai and supply ready stock of popular sizes from the same location, subject to availability.