Call: +91-98 77 77 86 77
Email: info@unionsteel.co.in
Call: +91-98 77 77 86 77
Email: info@unionsteel.co.in
Union Steel Industries supplies Stainless Steel, Duplex, Super Duplex, Nickel Alloy, Titanium, Aluminium, Copper & Brass Pipes and Tubes
Union Steel Industries is a trusted supplier and exporter of Pipes & Tubes, backed by the Navpad Metal Group’s 20+ years of industry heritage. Based in MIDC Bhosari, Pune, Maharashtra, we supply Stainless Steel, Duplex, Super Duplex, SMO 254, Nickel Alloys, Titanium, Aluminium, Copper, Brass and other specialty alloy Pipes and Tubes for engineering, fabrication, chemical, pharmaceutical, food processing, oil & gas, petrochemical, power, heat exchanger, automotive, marine and general industrial applications
As an ISO 9001:2015 certified company, Union Steel Industries focuses on material quality, dimensional accuracy, traceability and reliable supply.
Our Pipes & Tubes range includes Seamless Pipes & Tubes, Welded Pipes & Tubes, ERW Pipes & Tubes, Square Pipes & Tubes, Rectangular Pipes & Tubes, Round Pipes & Tubes, Electro Polish (EP) Pipes & Tubes, Heat Exchanger Tubes and Custom Tubes.
Materials can be supplied with applicable EN 10204 3.1 Mill Test Certificates, EN 10204 3.2 inspection documentation, PMI testing, NABL laboratory testing and Third-Party Inspection support according to customer, project and inspection requirements.
Contact our technical sales team today for an instant commercial quote.
WhatsApp: +91 9877778677 | Email: sales@unionsteel.co.in
Pipes and Tubes supplied according to applicable material standards, dimensions, manufacturing method, surface finish and customer specifications.
ISO 9001:2015 certified supplier offering MTC, PMI testing and inspection support as required.
Union Steel Industries supplies Stainless Steel Pipes & Tubes for applications requiring corrosion resistance, strength, durability and reliable performance.
Available Product Forms
Stainless Steel Seamless Pipes, Stainless Steel Welded Pipes, Stainless Steel ERW Pipes, Stainless Steel Round Pipes & Tubes, Stainless Steel Square Pipes & Tubes, Stainless Steel Rectangular Pipes & Tubes, Stainless Steel Boiler Tubes, Stainless Steel Heat Exchanger Tubes, Stainless Steel Electropolished Pipes & Tubes, Custom Stainless Steel Tubes
Common Grades
SS 202 | SS 304 | SS 304L | SS 309 | SS 309S | SS 310 | SS 310S | SS 316 | SS 316L | SS 316Ti | SS 321 | SS 347 | SS 409 | SS 410 | SS 420 | SS 430 | SS 440C | SS 17-4 PH | SS 904L
Common Standards
ASTM A312 / ASME SA312 | ASTM A269 / ASME SA269 | ASTM A213 / ASME SA213 | ASTM A358 / ASME SA358 | ASTM A554
Applicable standards depend on product form, grade, dimensions and application.
Applications
Chemical Processing | Pharmaceutical | Food Processing | Oil & Gas | Petrochemical | Power Generation | Heat Exchangers | Boilers | Condensers | Marine | Water Treatment | Automotive | General Engineering | Process Equipment
Common Standards
ASTM A312 | ASTM A790 | ASTM B165 | ASTM B167 | ASTM B407 | ASTM B423 | ASTM B444
Applicable standards depend on material and grade.
TYPES OF STAINLESS STEEL PIPES & TUBES
Union Steel Industries supplies Stainless Steel Pipes & Tubes in different manufacturing methods, shapes and applications, according to required grades, dimensions, standards and specifications.
Manufactured without a welded seam, Seamless Pipes are commonly used for high-pressure, high-temperature and demanding industrial applications.
Manufactured by forming stainless steel strip, sheet or plate and welding the edges, Welded Pipes are widely used in process piping, fabrication and industrial applications.
Electric Resistance Welded (ERW) Pipes are produced by forming steel strip into a tubular shape and joining the edges using electrical resistance welding.
Electric Fusion Welded (EFW) Pipes are manufactured using fusion welding and are commonly selected for larger sizes and demanding industrial piping requirements.
Round Pipes & Tubes are available in seamless or welded configurations and are widely used for piping, heat transfer, fabrication and general engineering.
Square Pipes & Tubes provide a uniform hollow section and are commonly used for structural frames, machinery, railings, furniture and architectural fabrication.
Rectangular Pipes & Tubes offer useful strength-to-weight characteristics for equipment frames, structural supports, construction, automotive and engineering applications.
Precision Tubes are supplied with controlled dimensions and tolerances for applications requiring dimensional accuracy and consistent tube performance.
Instrumentation Tubes are used for instrument lines, control systems and fluid or gas connections where accurate dimensions and reliable performance are required.
Boiler Tubes are designed for heat and pressure-related applications such as boilers, power systems and high-temperature equipment.
Heat Exchanger Tubes are used for efficient heat transfer in heat exchangers, condensers, process equipment and industrial cooling systems.
Electropolished (EP) Pipes & Tubes feature a smooth, clean and highly refined internal and external surface, making them suitable for applications requiring enhanced surface cleanliness.
Custom Stainless Steel Tubes can be sourced according to specific OD, wall thickness, length, grade, finish, tolerance and application requirements.
AVAILABLE MATERIAL GRADES
SS 202 | SS 304 | SS 304L | SS 309 | SS 309S | SS 310 | SS 310S | SS 316 | SS 316L | SS 316Ti | SS 321 | SS 347 | SS 409 | SS 410 | SS 420 | SS 430 | SS 440C | SS 17-4 PH | SS 904L
Products can be supplied according to applicable ASTM, ASME, EN, DIN, JIS and other international specifications, subject to product form, grade, dimensions and application.
PIPE & TUBE DIMENSIONS
Pipe and Tube requirements are generally specified using:
Material Grade | Standard | Outside Diameter (OD) | Nominal Bore (NB) | Schedule | Wall Thickness | Length | End Type | Surface Finish | Quantity
Common Dimension Parameters
Stainless Steel and alloy Pipes can be supplied in commonly requested Nominal Bore (NB) sizes, schedules and wall thicknesses according to applicable material standards and customer requirements.
Common NB Sizes
1/8″ NB | 1/4″ NB | 3/8″ NB | 1/2″ NB | 3/4″ NB | 1″ NB | 1-1/4″ NB | 1-1/2″ NB | 2″ NB | 2-1/2″ NB | 3″ NB | 4″ NB | 5″ NB | 6″ NB | 8″ NB | 10″ NB | 12″ NB | 14″ NB | 16″ NB | 18″ NB | 20″ NB | 24″ NB | 30″ NB | 36″ NB
Common Schedule References
SCH 5 | SCH 10 | SCH 10S | SCH 20 | SCH 30 | SCH 40 | SCH 40S | SCH 60 | SCH 80 | SCH 80S | SCH 100 | SCH 120 | SCH 140 | SCH 160 | XXS
Pipe Requirement Format
NB Size + Schedule + Grade + Standard + Length + Quantity
Examples
2″ NB × SCH 40 × SS 316L × ASTM A312
6″ NB × SCH 10S × SS 304L × ASTM A312
Actual availability depends on pipe size, material grade, schedule, wall thickness, applicable standard, manufacturing method, quantity and current stock position.
OD TUBE SIZES & SWG
Stainless Steel and alloy Tubes can be supplied in commonly requested outside diameters (OD), SWG wall thicknesses and gauges according to material grade, specification and customer requirements.
Common OD Tube Sizes
1/4″ OD | 5/16″ OD | 3/8″ OD | 1/2″ OD | 5/8″ OD | 3/4″ OD | 7/8″ OD | 1″ OD | 1-1/4″ OD | 1-1/2″ OD | 2″ OD | 2-1/2″ OD | 3″ OD | 3-1/2″ OD | 4″ OD
Common SWG References
10 SWG | 12 SWG | 14 SWG | 16 SWG | 18 SWG | 20 SWG | 22 SWG | 24 SWG
Tube Requirement Format
OD + Wall Thickness / SWG + Grade + Standard + Length + Quantity
Examples
1″ OD × 16 SWG × SS 316L × ASTM A269
2″ OD × 14 SWG × SS 304 × ASTM A269
Available Tube Forms
Seamless Tubes | Welded Tubes | Round Tubes | Heat Exchanger Tubes | Instrumentation Tubes | Precision Tubes | Square Tubes | Rectangular Tubes
| Material Category | Common Standards | Typical Grades |
|---|---|---|
| Stainless Steel Seamless Pipe | ASTM A312 / ASME SA312 | 304, 304L, 316, 316L, 321, 347, 310S, 904L |
| Stainless Steel Welded Pipe | ASTM A312 / ASME SA312 | 304, 304L, 316, 316L, 321, 347, 310S, 904L |
| Stainless Steel Tube | ASTM A269 / ASME SA269 | 304, 304L, 316, 316L |
| Stainless Steel Heat Exchanger Tube | ASTM A213 / ASME SA213 | 304, 304L, 316, 316L, 321, 347 |
| Duplex Stainless Steel | ASTM A790 / ASME SA790 | 2205, UNS S31803, UNS S32205 |
| Super Duplex Stainless Steel | ASTM A790 / ASME SA790 | 2507, UNS S32750, UNS S32760 |
| SMO 254 | Applicable ASTM / ASME | UNS S31254 |
| Hastelloy | Applicable ASTM / ASME | B2, B3, C276, C22 |
| Inconel | Applicable ASTM / ASME | 600, 601, 625, 718 |
| Monel | Applicable ASTM / ASME | 400, K500 |
| Titanium | ASTM B861 / ASME SB861 | Grade 1, Grade 2, Grade 5 |
| Aluminium | Applicable ASTM / ASME | 6061, 6063, 6082, 7075 |
| Copper | Applicable ASTM / ASME | C10100, C10200, C11000 |
| Brass | Applicable ASTM / ASME | C26000, C46400 |
Specific grades may require product-specific standards. Material will be supplied against the applicable purchase specification and agreed technical requirements.
PIPE & TUBE TESTING, MTC & INSPECTION
For industrial, engineering, EPC and export requirements, Union Steel Industries can support material documentation and inspection requirements.
Available Documentation
PMI TESTING
Positive Material Identification (PMI) can be arranged for Stainless Steel, Duplex, Super Duplex, Nickel Alloys, Titanium and other alloy materials to verify material identity.
Where specified, 100% PMI testing can be incorporated into the inspection requirement.
PMI Can Be Relevant For
SS 316L | SS 321 | SS 347 | SS 904L | Duplex 2205 | Super Duplex 2507 | SMO 254 | Hastelloy | Inconel | Monel
| NB | NPS | OD mm | OD Inch |
|---|---|---|---|
| 1/8″ | 1/8″ | 10.3 | 0.405″ |
| 1/4″ | 1/4″ | 13.7 | 0.540″ |
| 3/8″ | 3/8″ | 17.2 | 0.675″ |
| 1/2″ | 1/2″ | 21.3 | 0.840″ |
| 3/4″ | 3/4″ | 26.7 | 1.050″ |
| 1″ | 1″ | 33.4 | 1.315″ |
| 1-1/4″ | 1-1/4″ | 42.2 | 1.660″ |
| 1-1/2″ | 1-1/2″ | 48.3 | 1.900″ |
| 2″ | 2″ | 60.3 | 2.375″ |
| 2-1/2″ | 2-1/2″ | 73.0 | 2.875″ |
| 3″ | 3″ | 88.9 | 3.500″ |
| 4″ | 4″ | 114.3 | 4.500″ |
| 5″ | 5″ | 141.3 | 5.563″ |
| 6″ | 6″ | 168.3 | 6.625″ |
| 8″ | 8″ | 219.1 | 8.625″ |
| 10″ | 10″ | 273.1 | 10.750″ |
| 12″ | 12″ | 323.9 | 12.750″ |
| 14″ | 14″ | 355.6 | 14.000″ |
| 16″ | 16″ | 406.4 | 16.000″ |
| 18″ | 18″ | 457.2 | 18.000″ |
| 20″ | 20″ | 508.0 | 20.000″ |
| 24″ | 24″ | 610.0 | 24.000″ |
| 30″ | 30″ | 762.0 | 30.000″ |
| 36″ | 36″ | 914.4 | 36.000″ |
MATERIAL AVAILABILITY
All materials are subject to grade, size/dimensions, quantity, applicable specifications and current stock availability.
Availability of specific grades and sizes should be confirmed at the time of enquiry.
Located in MIDC Bhosari, Pune, Maharashtra, Union Steel Industries supplies Pipes & Tubes to major industrial markets across India. We serve customers across Pune and PCMC industrial areas, including MIDC Bhosari, Chakan, Talawade, Talegaon, Ranjangaon, Pirangut and Hadapsar.
MAJOR MARKETS
Pune | Mumbai | Navi Mumbai | Thane | Nashik | Chhatrapati Sambhajinagar | Ahmedabad | Vadodara | Surat | Jamnagar | Rajkot | Vapi | Gujarat | Delhi NCR | Bengaluru | Hyderabad | Chennai
We support manufacturers, OEMs, EPC contractors, fabricators, engineering companies, traders, procurement teams and industrial buyers with domestic supply and coordinated logistics.
GLOBAL EXPORT SUPPLY
Union Steel Industries supports international requirements for Stainless Steel Pipes, Tubes, Seamless Pipes, Welded Pipes and Specialty Alloy Pipes & Tubes.
EXPORT MARKETS
GCC | Middle East | Europe | USA
EXPORT SUPPORT
MTC | PMI | TPI | Inspection Documentation | Traceability | Export Packaging | Shipping Documentation
WHY UNION STEEL
When your project depends on the quality of its raw materials, you need more than a supplier. You need a dependable industrial metal partner.
Union Steel Industries combines industry experience, quality-focused sourcing and responsive customer service to deliver reliable metal solutions.
