Stainless Steel Hallow Pipes Manufacturer in India
Stainless Steel Hollow Pipe Manufacturer in India
Sachiya Steel International is a leading Stainless Steel Hollow Pipe Manufacturer in India, established in 2005 and based in Mumbai. With 20+ years of experience, we manufacture, supply, and export stainless steel hollow pipes in different grades, sizes, and wall thicknesses. Our pipes are supplied according to applicable ASTM standards, including A554, A511, A312, and A269, depending on the product type and application. We offer pickled, satin, and mirror-polished finishes, with smooth weld seams available on request.
We serve customers across 85+ countries, supplying pipes for construction, engineering, chemical processing, oil and gas, marine, and other industrial applications. Our ISO 9001:2015 and TÜV certifications reflect our focus on quality and reliable supply. We check wall thickness, roundness, and straightness, and maintain heat number traceability for material identification. From standard sizes to custom requirements, we support bulk orders and project needs with dependable service and timely delivery.
What Is Stainless Steel Hollow Pipe?
Stainless Steel Hollow Pipe is a hollow metal section made from stainless steel, available in round, square, and rectangular shapes. It combines strength with a lighter weight compared to solid steel bars of similar outer dimensions. These pipes offer good corrosion resistance, durability, and a clean finish, making them suitable for construction, machinery, fabrication, handrails, and industrial equipment. They are available in different grades, sizes, and wall thicknesses to meet the needs of various applications.
Stainless Steel Hollow Pipe
High-quality stainless steel hollow pipes manufactured for demanding applications across chemical, petrochemical, power generation, marine, construction and engineering industries. Available in multiple grades, sizes, wall thicknesses and specifications.
Why Choose Stainless Steel Hollow Pipe?
Stainless Steel Hollow Pipe is a practical choice for projects that need strength, durability, and resistance to corrosion. Its hollow design helps reduce weight while providing support for different structural and industrial applications. Stainless steel also offers a clean appearance and requires less maintenance when used in suitable conditions.
- Strong and Lightweight: Supports structural applications without the extra weight of solid steel.
- Corrosion Resistance: Helps protect against rust and damage, depending on the grade and environment.
- Easy to Fabricate: Can be cut, welded, and shaped to suit different project requirements.
- Long Service Life: Offers good durability when properly selected and maintained.
- Different Shapes and Sizes: Available in round, square, and rectangular sections with various wall thicknesses.
- Multiple Finish Options: Pickled, satin, and mirror-polished finishes suit industrial and decorative needs.
Choosing the right grade, dimensions, and finish helps ensure the pipe performs well in its intended application, whether used in construction, machinery, fabrication, or industrial equipment.
Types of Stainless Steel Hollow Pipe
As a Stainless Steel Hollow Pipe Manufacturer, we offer different pipe shapes, designs, and wall thicknesses to suit a wide range of industrial, structural, and decorative applications. Each type serves a specific purpose based on strength, weight, and finish requirements.
- Round Hollow Pipe: Suitable for handrails, machinery, and applications that need strength from all directions.
- Square Hollow Section: Ideal for support posts, furniture frames, and structural frameworks.
- Rectangular Hollow Section: Commonly used in beams, rails, frames, and construction projects.
- Seamless Hollow Pipe: Made without a welded joint and used in applications requiring specific mechanical or pressure performance.
- Welded Hollow Pipe: Manufactured by forming and welding stainless steel strips, making it suitable for general industrial and fabrication work.
- Polished Hollow Pipe: Available in satin and mirror finishes for handrails, interiors, and architectural designs.
- Heavy Wall Hollow Pipe: Suitable for heavy-duty structures, supports, and machinery.
- Thin Wall Hollow Tube: Used for lightweight furniture, decorative trim, and signage.
Selecting the right type depends on the required dimensions, stainless steel grade, wall thickness, finish, and intended application.
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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Seamless Pipes
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ERW Pipes
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LSAW Pipes
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SSAW Pipes
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Seamless Tubes
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Welded Pipes
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Welded Tubes
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Box Pipes
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Box Tubes
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Brass Pipes
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Heat Exchanger Tubes
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Boiler Tubes
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Aluminium 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 Stainless Steel Hollow Pipe at Competitive Factory Prices
Stainless Steel Hollow Pipe Specifications
| Parameter | Details |
|---|---|
| Material | Stainless steel 304, 304L, 316, 316L, 310S |
| Shapes | Round, square, rectangular |
| Manufacturing | Seamless, ERW welded, TIG welded |
| Round pipe OD | 6 mm to 219.1 mm, larger on request |
| Square section | 10 × 10 mm to 200 × 200 mm |
| Rectangular section | 20 × 10 mm to 200 × 100 mm, larger on request |
| Wall thickness | 0.5 mm to 12 mm |
| Weld seam | Ground flush and polished on request |
| Length | 6 m standard, cut length up to 12 m |
| Surface finish | Pickled, 2B, bright annealed, No. 4 satin, mirror |
| Tests | Chemical analysis, tensile, dimensional, weld seam check, PMI |
| Documents | EN 10204 3.1 mill certificate, inspection reports |
Stainless Steel Hollow Pipe Standards
| Standard | What it covers |
|---|---|
| ASTM A554 | Welded stainless mechanical tubing, round, square and rectangular |
| ASTM A511 | Seamless stainless mechanical tubing |
| ASTM A312 / ASME SA312 | Seamless and welded austenitic pipe, for fluid service |
| ASTM A269 | Seamless and welded tubing for general service |
| EN 10296-2 | Welded circular stainless tubes for mechanical and general engineering |
| EN 10297-2 | Seamless circular stainless tubes for mechanical and general engineering |
| JIS G3446 | Stainless tubes for machine and structural use |
Material and Grades of Stainless Steel Hollow Pipe
304: The most common grade, with good corrosion resistance for indoor and general outdoor use.
304L: Low carbon, preferred when sections are heavily welded.
316: Adds molybdenum for resistance to salt, chlorides and chemicals.
316L: Low-carbon 316, used for welded frames in coastal, food and pharma settings.
310S: Higher chromium and nickel for hollow pipe that sees sustained heat, such as furnace racks and exhaust supports.
For hollow pipe, grade choice depends on where it will stand. Indoors, 304 is usually enough. Near the sea or in polluted air, 316L lasts far longer. In hot zones, 310S keeps its strength and resists scaling.
Stainless Steel Hollow Pipe vs Solid Bar: Which Do You Need?
| Point | Hollow pipe | Solid round bar |
|---|---|---|
| Weight (60.3 mm, 3 mm wall vs 60 mm bar) | About 4.3 kg/m | About 22.6 kg/m |
| Bending stiffness | About a third of the solid bar | Highest |
| Cost per metre | Much lower | Higher |
| Fabrication | Easy to cut, bend and weld | Harder to cut and heavy to handle |
| Best for | Frames, rails, structures, equipment | Shafts, machined parts, fasteners |
Choose hollow pipe when the job is about carrying load over a span, and weight matters. Choose solid bar when you need to machine the part, turn threads or carry very high point loads.
Stainless Steel Hollow Pipe Chemical Composition
| Element | 304 (%) | 316L (%) | 310S (%) |
|---|---|---|---|
| Carbon (C) | 0.08 max | 0.03 max | 0.08 max |
| Manganese (Mn) | 2.00 max | 2.00 max | 2.00 max |
| Silicon (Si) | 1.00 max | 1.00 max | 1.00 max |
| Phosphorus (P) | 0.045 max | 0.045 max | 0.045 max |
| Sulphur (S) | 0.030 max | 0.030 max | 0.030 max |
| Chromium (Cr) | 18.0 – 20.0 | 16.0 – 18.0 | 24.0 – 26.0 |
| Nickel (Ni) | 8.0 – 11.0 | 10.0 – 14.0 | 19.0 – 22.0 |
| Molybdenum (Mo) | — | 2.00 – 3.00 | — |
| Iron (Fe) | Balance | Balance | Balance |
Stainless Steel Hollow Pipe Mechanical Properties
| Property | 304 | 316L | 310S |
|---|---|---|---|
| Tensile strength | 515 MPa min | 485 MPa min | 515 MPa min |
| Yield strength (0.2%) | 205 MPa min | 170 MPa min | 205 MPa min |
| Elongation (typical) | 35% | 35% | 35% |
| Hardness (typical) | 90 HRB max | 90 HRB max | 90 HRB max |
| Density | 7.93 g/cm³ | 7.98 g/cm³ | About 7.90 g/cm³ |
| Magnetic response | Non-magnetic when annealed | Non-magnetic when annealed | Non-magnetic when annealed |
Stainless Steel Hollow Pipe Size and Weight Chart
For round hollow pipe, weight per metre is (OD − Wall) × Wall × 0.02491 for 304 and 304L, and × 0.02507 for 316 and 316L. For square hollow sections, it is 0.03172 × Wall × (Side − Wall) for 304, and 0.03192 × the same figure for 316. All dimensions are in mm. The square formula ignores corner radii, so actual weight is slightly lower.
Use factor 0.02491 for round 304 / 304L, 0.02507 for round 316 / 316L, 0.03172 for square 304, and 0.03192 for square 316. All dimensions are in mm.
Round hollow pipe
| OD (mm) | Wall (mm) | 304 kg/m | 316 kg/m |
|---|---|---|---|
| 12.7 | 1.0 | 0.29 | 0.29 |
| 19.05 | 1.2 | 0.53 | 0.54 |
| 25.4 | 1.5 | 0.89 | 0.90 |
| 33.4 | 2.0 | 1.56 | 1.57 |
| 42.2 | 2.0 | 2.00 | 2.02 |
| 48.3 | 2.5 | 2.85 | 2.87 |
| 60.3 | 3.0 | 4.28 | 4.31 |
| 88.9 | 3.0 | 6.42 | 6.46 |
| 114.3 | 4.0 | 10.99 | 11.06 |
| 168.3 | 5.0 | 20.34 | 20.47 |
Square hollow sections
| Size (mm) | Wall (mm) | 304 kg/m | 316 kg/m |
|---|---|---|---|
| 15 × 15 | 1.2 | 0.53 | 0.53 |
| 20 × 20 | 1.5 | 0.88 | 0.89 |
| 25 × 25 | 1.5 | 1.12 | 1.13 |
| 40 × 40 | 2.0 | 2.41 | 2.43 |
| 50 × 50 | 2.0 | 3.05 | 3.06 |
| 60 × 60 | 2.5 | 4.56 | 4.59 |
| 80 × 80 | 3.0 | 7.33 | 7.37 |
| 100 × 100 | 3.0 | 9.23 | 9.29 |
| 150 × 150 | 4.0 | 18.52 | 18.64 |
Stainless Steel Hollow Pipe Sizes, Dimensions and Schedules
Round hollow pipe for fluid service is named by nominal size and schedule, while structural hollow pipe is ordered by OD or section size and wall in mm. The table shows how wall thickness changes with schedule at two common pipe sizes.
| Schedule | Wall at 1" / DN 25 (mm) | Wall at 4" / DN 100 (mm) | Typical use |
|---|---|---|---|
| 5S | 1.65 | 2.11 | Light-duty, low-pressure |
| 10S | 2.77 | 3.05 | General service |
| 40S | 3.38 | 6.02 | Standard industrial piping |
| 80S | 4.55 | 8.56 | Higher pressure and heavy duty |
| 160 | 6.35 | 13.49 | Very high pressure |
For structural sections, common wall ranges are 0.8–1.5 mm for furniture and trim, 1.5–3.0 mm for handrails and frames, and 3.0 mm and above for heavy structures. Wall thickness tolerance is typically ±10% on A554 tubing and −12.5% on A312 pipe. Straightness, roundness and corner shape are checked before dispatch.
Surface Finishes of Stainless Steel Hollow Pipe
| Finish | What it is | Where it is used |
|---|---|---|
| Pickled and annealed | Acid-cleaned industrial finish | Plants, process equipment |
| 2B / mill | Smooth, matt factory finish | General fabrication |
| Bright annealed | Clean, shiny surface from controlled annealing | Round tube for instrument and light-duty work |
| No. 4 satin (180 grit) | Soft linear brushed grain | Handrails, interiors, facades |
| Mirror (No. 8) | Buffed to a reflective shine | Architecture and decor |
| Electropolished | Chemically smoothed surface | Hygienic and high-purity systems |
Testing and Inspection of Stainless Steel Hollow Pipe
| Test | Purpose |
|---|---|
| Chemical analysis | Confirms the grade against the standard |
| Tensile test | Checks strength and elongation |
| Dimensional check | Measures OD or side, wall thickness, roundness and corner shape |
| Straightness check | Confirms the pipe is true along its length |
| Flattening and flaring (round) | Shows the pipe deforms without cracking |
| Weld seam check | Eddy current or visual inspection of the seam, dye penetrant on request |
| Surface inspection | Checks finish for scratches, dents and weld marks |
| PMI | Confirms the alloy before dispatch |
| IGC to ASTM A262 | Checks resistance to intergranular attack, on request |
Common Materials Supplied with Stainless Steel Hollow Pipe
Along with stainless steel hollow pipes, we manufacture and supply a range of related products for industrial, construction, and fabrication applications. As stainless steel hollow pipe suppliers, we offer different materials to help meet project requirements across various industries.
Seamless Pipes and Tubes: Available for fluid handling, instrumentation, and industrial applications, depending on the grade and specification.
Angles, Channels and Flat Bars: Used for structural supports, brackets, frames, and fabrication work.
Stainless Steel Sheets and Plates: Suitable for cladding, panels, enclosures, and machine components.
Stainless Steel Round Bars: Used for shafts, pins, fasteners, and machined parts.
Pipe Fittings and Flanges: Include elbows, tees, reducers, and flanges for connecting piping systems.
Railing Fittings and End Caps: Help complete handrails, frames, and other architectural installations.
Our wide product range allows us to supply stainless steel materials in different grades, sizes, and specifications for industrial and engineering projects.
Applications of Stainless Steel Hollow Pipe
- Architecture and Construction: Handrails, balustrades, facades, canopies and curtain wall frames.
- Structures and Supports: Platforms, walkways, trusses and equipment supports.
- Machinery and Equipment: Machine frames, conveyors and housings.
- Food and Beverage: Washdown frames, racks and trolleys that must not rust.
- Pharmaceutical and Hospitals: Equipment stands, carts, cleanroom frames and rails.
- Marine and Coastal: Deck railings, gangways and waterfront structures in 316L.
- Transport and Rail: Bus and train frames, station furniture and handrails.
- Furniture and Interiors: Tables, shelving, partitions and shopfitting frames.
- Water and Wastewater: Walkways, supports and covers in wet environments.
Why Choose Us as Your Stainless Steel Hollow Pipe Manufacturer in India?
We have been manufacturing stainless steel pipes and tubes since 2005, bringing 20+ years of industry experience. Our ISO 9001:2015 and TÜV certifications reflect our focus on quality and reliable manufacturing. With a production capacity of up to 100 tons per month, we handle regular orders, bulk requirements, and large project supplies.
We offer stainless steel hollow pipes in grades 304, 304L, 316, 316L, and 310S, in round, square, and rectangular shapes. Our range includes welded and seamless options with wall thicknesses from 0.5 mm to 12 mm. We also provide custom sizes, cut lengths, and mitred ends to match specific project drawings.
We check wall thickness, straightness, roundness, and surface finish to maintain consistent product quality. Every order comes with an EN 10204 3.1 material test certificate, while PMI, IGC testing, and third-party inspections can be arranged on request. Heat number traceability helps identify and track the material supplied.
As a stainless steel hollow pipe Supplier in India, we serve customers across 85+ countries. We carefully pack our products for shipping and support export documentation to help ensure smooth delivery to international destinations.
Countries We Export Stainless Steel Hollow Pipe To
We export stainless steel hollow pipes to 85+ countries, supplying different grades, sizes, and shapes for industrial, construction, engineering, and fabrication projects. Our export services cover customers across Asia, Europe, the Middle East, Africa, and the Americas, with products prepared to meet their order specifications.
Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait, and Bahrain.
Europe: Germany, Italy, the United Kingdom, France, Spain, the Netherlands, Belgium, and Poland.
Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, and Australia.
Americas: USA, Canada, Mexico, Brazil, and Chile.
Africa: South Africa, Nigeria, Egypt, and Kenya.
South Asia: Nepal, Bangladesh, and Sri Lanka.
We prepare each shipment carefully to protect the pipes during transport and provide the necessary export documents. Every order includes an EN 10204 3.1 material test certificate, while EN 10204 3.2 certification and third-party inspections can be arranged on request. Our team works to keep international orders organised, from material preparation to final dispatch.
FAQs
Common questions about stainless steel hollow pipe, grades, weights, finishes and supply.
How is hollow pipe different from solid bar?
Hollow pipe is much lighter and cheaper per metre and still resists bending well. Solid bar is better when the part must be machined or carry very high point loads.
How do I calculate the weight of round hollow pipe?
Use (OD − Wall) × Wall × 0.02491 for 304, with both values in mm, to get kg per metre. For 316, use 0.02507.
How do I calculate the weight of square hollow section?
Use 0.03172 × Wall × (Side − Wall) for 304, with all values in mm. For 316, use 0.03192 in place of 0.03172.
Which grade should I use outdoors?
304 works for most inland outdoor use. Use 316 or 316L near the sea, in polluted air or where chlorides are present.
Which standard applies to hollow pipe?
ASTM A554 covers welded mechanical tubing and A511 covers seamless. For fluid service, use ASTM A312 or A269.
Can hollow pipe carry water or gas?
Round hollow pipe made to A312 or A269 can carry fluids. Square and rectangular sections are for structural use and are not suited to internal pressure.
How is hollow pipe different from hollow bar?
Hollow bar has a thick wall and a small bore, made for machining into parts. Hollow pipe has a thinner wall and is used for structures, rails and fluid lines.
Which finish is best for handrails?
No. 4 satin is the most popular because it hides fingerprints and scratches. Mirror finish gives a brighter, more formal look but shows every mark.
Can you supply cut lengths and mitred ends?
Yes. Standard length is 6 m, and we cut to length, mitre the ends and drill or punch sections to your drawing.
Which documents come with an order?
EN 10204 3.1 mill test certificates are included. Inspection reports, PMI reports and third-party certificates are available on request.