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Girgaon, Mumbai - 400004
Stainless Steel Welded Tubes Manufacturer & Stockist in India (Since 1984)
Stainless Steel Welded Tube Manufacturer in India
Kamal Steels is a leading Stainless Steel Welded Tube Manufacturer and Stockist in India, We specialize in manufacturing welded stainless steel tubes for industrial, process and engineering applications with complete specifications, sizes and international standards compliance.
Our company is recognized among leading stainless steel welded tube manufacturers offering precision-engineered products in grades 304, 304L, 316, 316L, 321, 347 and 904L. These stainless steel welded tubes are widely used in heat exchangers, instrumentation systems, food processing and chemical industries.
As experienced welded stainless steel tube manufacturers, we supply welded stainless tubing in round, square and rectangular forms with accurate dimensions and superior surface finish. Our production process ensures strong weld integrity, corrosion resistance and long service life.
Kamal Steels is also known as one of the reliable Stainless Steel Welded Tubes suppliers serving domestic and international markets. We manufacture and export welded stainless steel tubes in custom sizes, wall thicknesses and finishes according to project requirements.
Being a dependable stainless steel welded tubes manufacturer, we follow ASTM A249, ASTM A269, ASTM A554 and ASME standards for quality assurance. Our welded stainless steel tubes manufacturer expertise allows us to deliver high-performance tubing solutions for demanding industrial environments.
Stainless Steel Welded Tube Specifications
| Product Name | Stainless Steel Welded Tubes |
|---|---|
| Brand | Kamal Steels |
| Material | Stainless Steel |
| Type | Welded Tube |
| Form | Round, Square, Rectangular |
| Outer Diameter | 6 mm to 219 mm |
| Wall Thickness | 0.5 mm to 12 mm |
| Length | Single Random, Double Random, Cut Length |
| Tube End | Plain End, Beveled End |
| Surface Finish | Annealed, Pickled, Polished, Bright Annealed |
| Standards | ASTM A249, ASTM A269, ASTM A554, ASME Standards |
| Tube Thickness | SCH 5S to SCH XXS |
Ready Stock of Stainless Steel Welded Tubes
Kamal Steels maintains a large inventory of Stainless Steel Welded Tubes in various grades, sizes and wall thicknesses for immediate dispatch. Our ready stock program helps customers reduce procurement lead times and meet urgent project requirements across domestic and international markets.
Available Grades in Ready Stock:
- SS 304 Welded Tube
- SS 304L Welded Tube
- SS 316 Welded Tube
- SS 316L Welded Tube
- SS 321 Welded Tube
- SS 347 Welded Tube
- SS 904L Welded Tube
Our stock includes welded tubes in multiple outside diameters, wall thicknesses and lengths suitable for heat exchangers, instrumentation systems, pharmaceutical plants, food processing units, chemical processing, water treatment, oil & gas and general industrial applications.
All Stainless Steel Welded Tubes are supplied in accordance with international standards such as ASTM A249, ASTM A269 and ASTM A270 and are accompanied by Material Test Certificates (MTC) for complete quality assurance and traceability.
Additional services such as custom cutting, polishing, third-party inspection and export documentation are available to meet specific project requirements.
Contact Kamal Steels for current stock availability, bulk order quantities, custom sizes and the latest prices on Stainless Steel Welded Tubes available for immediate shipment worldwide.
Stainless Steel Welded Tube Price in India
Kamal Steels offers competitive stainless steel welded tube price options for domestic and export requirements. Contact our sales team for a fast stainless steel welded tube quotation based on your required size, wall thickness, quantity, and delivery location.
Looking for the latest stainless steel welded tube price per meter? We provide customized pricing and ready stock availability for industrial, architectural, automotive, food processing, pharmaceutical, and engineering applications.
Factors Affecting Stainless Steel Welded Tube Price
- Tube Size & Outside Diameter (OD)
- Wall Thickness
- Length Requirements
- Grade of Stainless Steel (304, 304L, 316, 316L, etc.)
- Order Quantity
- Testing & Inspection Requirements
- Surface Finish Requirements (Mill Finish, Polished, Mirror Finish)
- Current Stainless Steel Market Rates
- Delivery Location
For the latest Stainless Steel Welded Tube Price in India, contact Kamal Steels today for an instant quotation, technical assistance, and stock availability.
Stainless Steel Welded Tube Dimensions
Stainless Steel Welded Tube Weight Chart
| Tube Size | OD (mm) | 10G | 12G | 14G | 16G | 18G | 20G | 22G |
|---|---|---|---|---|---|---|---|---|
| 3.25 mm | 2.64 mm | 2.03 mm | 1.65 mm | 1.21 mm | 0.91 mm | 0.71 mm | ||
| 1/4" | 6.35 | 0.25 | 0.20 | 0.16 | 0.14 | 0.10 | 0.08 | 0.06 |
| 5/16" | 7.94 | 0.38 | 0.31 | 0.25 | 0.21 | 0.16 | 0.12 | 0.10 |
| 3/8" | 9.53 | 0.50 | 0.41 | 0.33 | 0.28 | 0.21 | 0.16 | 0.13 |
| 1/2" | 12.70 | 0.76 | 0.62 | 0.50 | 0.42 | 0.31 | 0.24 | 0.19 |
| 5/8" | 15.88 | 1.01 | 0.83 | 0.67 | 0.56 | 0.42 | 0.32 | 0.26 |
| 3/4" | 19.05 | 1.26 | 1.03 | 0.84 | 0.70 | 0.53 | 0.40 | 0.32 |
| 7/8" | 22.23 | 1.51 | 1.24 | 1.01 | 0.84 | 0.63 | 0.48 | 0.39 |
| 1" | 25.40 | 1.76 | 1.45 | 1.18 | 0.98 | 0.74 | 0.56 | 0.45 |
| 1 1/4" | 31.75 | 2.27 | 1.87 | 1.52 | 1.27 | 0.95 | 0.72 | 0.58 |
| 1 1/2" | 38.10 | 2.78 | 2.28 | 1.86 | 1.55 | 1.16 | 0.88 | 0.71 |
| 2" | 50.80 | 3.79 | 3.12 | 2.54 | 2.11 | 1.59 | 1.21 | 0.97 |
| 2 1/2" | 63.50 | 4.80 | 3.95 | 3.22 | 2.68 | 2.01 | 1.53 | 1.23 |
| 3" | 76.20 | 5.82 | 4.78 | 3.89 | 3.24 | 2.43 | 1.85 | 1.49 |
| 3 1/2" | 88.90 | 6.83 | 5.62 | 4.57 | 3.81 | 2.86 | 2.18 | 1.75 |
| 4" | 101.60 | 7.85 | 6.45 | 5.25 | 4.37 | 3.28 | 2.50 | 2.01 |
Gauge Thickness:
- 10G = 3.25 mm
- 12G = 2.64 mm
- 14G = 2.03 mm
- 16G = 1.65 mm
- 18G = 1.21 mm
- 20G = 0.91 mm
- 22G = 0.71 mm
Formula: Weight (Kg/Mtr) = (OD − WT) × WT × 0.02466
Schedule 40 and Schedule 80 Stainless Steel Welded Tubes
Schedule 40 and Schedule 80 are among the most commonly used wall thickness ranges in stainless steel welded tube systems. Schedule 40 stainless steel welded tubes are suitable for general industrial and engineering applications, while Schedule 80 welded stainless steel tubes provide thicker walls for higher pressure and demanding operating conditions.
Schedule 40S & Schedule 80S Stainless Steel Welded Tube Chart
| Tube Size | Outside Diameter | SCH 40S WT | SCH 80S WT |
|---|---|---|---|
| 1/8" | 10.3 mm | 1.73 mm | 2.41 mm |
| 1/4" | 13.7 mm | 2.24 mm | 3.02 mm |
| 3/8" | 17.1 mm | 2.31 mm | 3.20 mm |
| 1/2" | 21.3 mm | 2.77 mm | 3.73 mm |
| 3/4" | 26.7 mm | 2.87 mm | 3.91 mm |
| 1" | 33.4 mm | 3.38 mm | 4.55 mm |
| 1 1/4" | 42.2 mm | 3.56 mm | 4.85 mm |
| 1 1/2" | 48.3 mm | 3.68 mm | 5.08 mm |
| 2" | 60.3 mm | 3.91 mm | 5.54 mm |
| 2 1/2" | 73.0 mm | 5.16 mm | 7.01 mm |
| 3" | 88.9 mm | 5.49 mm | 7.62 mm |
| 4" | 114.3 mm | 6.02 mm | 8.56 mm |
| 5" | 141.3 mm | 6.55 mm | 9.52 mm |
| 6" | 168.3 mm | 7.11 mm | 10.97 mm |
| 8" | 219.1 mm | 8.18 mm | 12.70 mm |
| 10" | 273.0 mm | 9.27 mm | 12.70 mm |
| 12" | 323.9 mm | 9.52 mm | 12.70 mm |
| 14" | 355.6 mm | 9.52 mm | 12.70 mm |
| 16" | 406.4 mm | 9.52 mm | 12.70 mm |
| 18" | 457.2 mm | 9.52 mm | 12.70 mm |
| 20" | 508.0 mm | 9.52 mm | 12.70 mm |
| 24" | 609.6 mm | 9.52 mm | 12.70 mm |
Difference Between SCH 40S and SCH 80S Stainless Steel Welded Tubes
| Property | SCH 40S | SCH 80S |
|---|---|---|
| Wall Thickness | Standard | Heavy |
| Pressure Capacity | Medium Pressure | High Pressure |
| Weight | Lower | Higher |
| Strength | Moderate | Superior |
| Application Type | General Industrial Use | Heavy-Duty Industrial Use |
| Common Industries | Water treatment, food processing, pharma | Oil & gas, refinery, petrochemical |
Available Grades of Stainless Steel Welded Tubes
Kamal Steels manufactures the following grades of stainless steel welded tubes:
- Stainless Steel 304 Welded Tubes
- Stainless Steel 304L Welded Tubes
- Stainless Steel 304H Welded Tubes
- Stainless Steel 310 Welded Tubes
- Stainless Steel 310S Welded Tubes
- Stainless Steel 310H Welded Tubes
- Stainless Steel 316 Welded Tubes
- Stainless Steel 316L Welded Tubes
- Stainless Steel 316H Welded Tubes
Stainless Steel Welded Tubes vs Seamless Tubes
The comparison between stainless steel welded tubes vs seamless tubes depends on manufacturing process, pressure requirements, dimensional accuracy and application requirements. Seamless tubes are manufactured without any welded joint, while stainless steel welded tubes are produced by forming stainless steel strips or coils into a tubular shape and welding the seam using advanced welding technology.
Stainless steel seamless tubes are generally preferred for high-pressure and critical industrial applications because they provide uniform structure and superior pressure handling capability. These tubes are widely used in heat exchangers, condensers, hydraulic systems and high-temperature process applications.
On the other hand, stainless steel welded tubes offer excellent dimensional accuracy, smooth surface finish and cost-effective performance for industrial and engineering applications. Modern welding processes ensure strong weld integrity and reliable mechanical properties, making welded stainless tubing suitable for food processing, pharmaceutical, instrumentation, chemical processing and structural applications.
Difference Between Stainless Steel Seamless and Welded Tubes
| Property | Seamless Tubes | Welded Tubes |
|---|---|---|
| Manufacturing Process | Manufactured without welding | Manufactured using welded seam |
| Strength | Higher pressure strength | Good mechanical strength |
| Surface Finish | Smooth internal finish | Smooth external and internal finish |
| Cost | Higher | More economical |
| Dimensional Accuracy | Moderate | Excellent |
| Pressure Handling | Suitable for high pressure | Suitable for low to medium pressure |
| Applications | Critical industrial service | General industrial applications |
| Availability | Limited large sizes | Wide range of sizes available |
Both seamless and welded stainless steel tubes offer excellent corrosion resistance, durability and long service life. The selection depends on operating pressure, application requirements, dimensional accuracy and project budget.
Stainless Steel Welded Tube Manufacturing Process
Understanding the Stainless Steel Welded Tube Manufacturing Process
Stainless steel welded tubes are manufactured from high-quality stainless steel coils using advanced roll forming and welding technology. The process ensures excellent dimensional accuracy, smooth surface finish, consistent wall thickness and reliable mechanical properties for industrial, architectural and process applications.
| Step 1 |
Stainless Steel Coil Selection High-quality stainless steel coils are selected according to the required grade, thickness, width and application specifications. |
|---|---|
| Step 2 |
Slitting Stainless steel coils are slit into precise strip widths suitable for the required tube diameter and wall thickness. |
| Step 3 |
Roll Forming The stainless steel strip is gradually formed into a tubular shape through a series of forming rolls. |
| Step 4 |
TIG / Laser Welding The edges of the formed tube are welded together using TIG or laser welding technology to create a strong and continuous weld seam. |
| Step 5 |
Weld Bead Removal Internal and external weld beads are removed to achieve a smooth surface finish and improve dimensional accuracy. |
| Step 6 |
Annealing The welded tube is heat treated under controlled conditions to relieve stresses and restore corrosion resistance and mechanical properties. |
| Step 7 |
Sizing The tube passes through sizing rolls to achieve the required outside diameter, wall thickness and dimensional tolerances. |
| Step 8 |
Straightening Tubes are straightened using precision straightening equipment to ensure uniformity and proper alignment. |
| Step 9 |
Cutting Tubes are cut into specified lengths according to customer requirements and project specifications. |
| Step 10 |
Testing & Inspection Finished tubes undergo dimensional inspection, visual examination, mechanical testing and non-destructive testing to verify product quality and compliance. |
| Step 11 |
Finished Product Stainless steel welded tubes are cleaned, marked, packed and prepared for storage, domestic supply and export dispatch. |
Chemical Composition of Stainless Steel Welded Tubes
The chemical composition of stainless steel welded tubes plays an important role in corrosion resistance, weldability, strength and overall service performance. Different stainless steel grades are selected according to application requirements, operating temperature and corrosive environments.
| Grade | Cr % | Ni % | Mo % | C % | Mn % | Si % |
|---|---|---|---|---|---|---|
| 304 / 304L | 18.0–20.0 | 8.0–13.0 | — | 0.08 max / 0.03 max | 2.0 max | 1.0 max |
| 316 / 316L | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | 0.08 max / 0.03 max | 2.0 max | 1.0 max |
| 321 | 17.0–19.0 | 9.0–12.0 | — | 0.08 max | 2.0 max | 1.0 max |
| 347 | 17.0–19.0 | 9.0–13.0 | — | 0.08 max | 2.0 max | 1.0 max |
| 904L | 19.0–23.0 | 23.0–28.0 | 4.0–5.0 | 0.02 max | 2.0 max | 1.0 max |
Chemical Composition of High-Temperature Grades
Stainless steel welded tubes in grades such as 310, 321, 347 and their H versions are designed for elevated-temperature service and improved structural stability. These grades are commonly used in furnaces, boilers, heat exchangers and thermal processing systems.
Chemical Composition of Corrosion-Resistant Grades
Grades such as 316L and 904L contain higher nickel and molybdenum content, providing improved resistance against chlorides, acids and highly corrosive industrial environments. These welded stainless steel tubes are widely used in chemical processing, marine and pharmaceutical industries.
Stainless Steel Welded Tubes Standards
| ASTM Standards | ASME Standards | Application |
|---|---|---|
| ASTM A249 Tube | ASME SA249 | Boiler, Superheater, Heat Exchanger & Condenser Tubes |
| ASTM A269 Tube | ASME SA269 | General Service Stainless Steel Tubes |
| ASTM A270 Tube | ASME SA270 | Sanitary & Hygienic Tubing |
| ASTM A554 Tube | - | Mechanical & Ornamental Tubing |
| ASTM A688 | ASME SA688 | Feedwater Heater Tubes |
| ASTM A789 | ASME SA789 | Duplex Stainless Steel Tubes |
Mechanical Properties of Stainless Steel Welded Tubes
Tensile Strength
Tensile strength indicates how much stress the tube can withstand before breaking. Stainless steel welded tubes provide reliable tensile performance, making them suitable for industrial, structural and process applications.
Yield Strength
Yield strength represents the point at which the tube begins to deform permanently under load. Good yield strength is important for welded stainless steel tubes used in pressure systems and fabrication applications.
Elongation
Elongation reflects the ductility and forming capability of stainless steel welded tubes. Higher elongation helps during bending, fabrication and installation processes.
| Grade | Tensile Strength (MPa, min) | Yield Strength (MPa, min) | Elongation (% min) |
|---|---|---|---|
| SS 304 | 515 | 205 | 40% |
| SS 304L | 485 | 170 | 40% |
| SS 316 | 515 | 205 | 40% |
| SS 316L | 485 | 170 | 40% |
| SS 321 | 515 | 205 | 40% |
| SS 904L | 490 | 220 | 35% |
Why Stainless Steel Welded Tubes?
Stainless steel welded tubes are manufactured by forming stainless steel strips or coils into a tubular shape and welding the seam using advanced welding technology. These tubes provide excellent dimensional accuracy, smooth surface finish and strong mechanical performance for industrial and engineering applications. Stainless steel welded tubes are widely used where corrosion resistance, hygienic properties and cost-effective tubing solutions are required.
Stainless steel welded tubes are preferred for applications requiring precise dimensions, clean surface finish and reliable structural strength. Modern welding processes ensure strong weld integrity and consistent product quality. These welded stainless steel tubes are suitable for heat exchangers, instrumentation systems, food processing, pharmaceutical, chemical processing, water treatment and general engineering industries.
Why Choose Kamal Steels?
- Manufacturer & Stockist Since 1984
- Large Ready Stock Available
- ASTM & ASME Standard Tubes
- Third Party Inspection
- Mill Test Certificates Provided
- PAN India & Export Supply
- Competitive Prices
- Fast Delivery Support
Features of Stainless Steel Welded Tubes
- Excellent Weld Quality: Manufactured using advanced TIG or laser welding processes to ensure strong and reliable weld seams.
- Tight Manufacturing Tolerances: Produced with precise dimensional control for consistent outside diameter, wall thickness and straightness.
- Hygienic Surface Finish: Smooth internal and external surfaces reduce contamination risks and support clean process applications.
- Excellent Formability: Easily suitable for bending, expanding, flaring and fabrication without compromising performance.
- Wide Range of Sizes: Available in various diameters, wall thicknesses and lengths to meet diverse project requirements.
- Cost-Efficient Alternative: Offers an economical solution compared to seamless tubes for many industrial applications.
- Enhanced Corrosion Protection: Suitable for handling moisture, chemicals and corrosive process media across multiple industries.
- Reliable Mechanical Performance: Provides dependable strength and structural stability under normal operating conditions.
- Easy Installation: Uniform dimensions and consistent quality simplify installation and fabrication processes.
- Low Lifecycle Cost: Long-term durability and reduced maintenance requirements help lower overall operating costs.
Applications of Stainless Steel Welded Tubes
Stainless steel welded tubes are widely used in applications where corrosion resistance, dimensional accuracy and reliable performance are required.
Oil & Gas Industry
Used for fluid transportation and process systems in offshore and onshore operations.
Chemical Industry
Widely used for handling chemicals and corrosive fluids in industrial processing plants.
Heat Exchangers
Preferred for heat exchanger and condenser systems because of their smooth finish and corrosion resistance.
Pharmaceutical Industry
Ideal for hygienic and contamination-free pharmaceutical process piping systems.
Food Processing Industry
Used in food and beverage applications due to hygienic surfaces and easy cleaning properties.
Water Treatment Plants
Suitable for desalination and water purification systems requiring corrosion-resistant tubing.
Power Generation
Used in steam lines, boilers and thermal systems operating under demanding conditions.
Instrumentation Systems
Stainless steel welded tubing is widely used in instrumentation and hydraulic control systems.
Construction Industry
Used in structural, architectural and industrial construction applications.
Marine Industry
Marine environments require welded stainless steel tubes with excellent corrosion resistance and durability.
Industries We Serve
Kamal Steels supplies stainless steel welded tubes to industries worldwide for corrosion-resistant and industrial process applications.
Refineries
Our stainless steel welded tubes are widely used in refinery applications for process and utility systems.
Fertilizer Plants
Fertilizer industries require corrosion-resistant welded stainless tubing for chemical processing operations.
Cement Plants
These stainless steel welded tubes are suitable for industrial equipment and material handling systems.
Engineering Industry
Engineering sectors use welded stainless steel tubes for fabrication and industrial systems.
Offshore Industry
Offshore applications require durable stainless steel welded tubing with reliable corrosion resistance.
Automobile Industry
Automobile industries use stainless steel welded tubes in exhaust systems and fluid transportation applications.
Packaging, Testing & Inspection
Packaging
- Wooden Boxes: Stainless steel welded tubes are packed securely in wooden boxes to prevent transportation damage.
- Bundle Packing: Welded stainless steel tubes are bundled properly for safe storage and shipment handling.
- Plastic End Caps: Plastic caps protect tube ends from dust, moisture and external damage during transit.
- Export Standard Packaging: All stainless steel welded tubes are packed according to international export standards.
- Bubble Wrap Protection: Bubble wrapping provides additional protection for polished and finished tube surfaces.
Testing & Inspection
- Hydro Testing: Ensures stainless steel welded tubes can withstand internal pressure without leakage.
- Eddy Current Testing: Detects surface and internal defects in welded stainless tubing.
- PMI Testing: Positive Material Identification verifies chemical composition and material grade.
- Flattening Test: Evaluates tube flexibility and resistance to cracking during deformation.
- Flaring Test: Checks tube expansion and forming capability for fabrication applications.
- Visual Inspection: Confirms weld quality, dimensions and surface finish compliance.
- Third Party Inspection: Independent inspection agencies verify quality and testing compliance before dispatch.
Frequently Asked Questions
A stainless steel welded tube is manufactured by forming stainless steel strip or coil into a tubular shape and joining the edges through a welding process. Welded tubes offer excellent dimensional accuracy, smooth surface finish and cost-effective performance for industrial applications.
Stainless steel welded tubes are available in grades such as SS 304, 304L, 316, 316L, 321, 347 and 904L. The selection depends on the required corrosion resistance, operating temperature and application requirements.
Stainless steel welded tubes are commonly manufactured according to ASTM A249, ASTM A269, ASTM A554, ASTM A688, ASME SA249 and ASME SA269 standards to ensure quality, strength and dimensional accuracy.
Welded tubes are produced by welding rolled stainless steel strips, while seamless tubes are manufactured without any welded joint. Welded tubes are more economical and offer excellent dimensional consistency, whereas seamless tubes are preferred for extremely high-pressure applications.
Stainless steel welded tubes are widely used in heat exchangers, condensers, food processing equipment, pharmaceutical plants, dairy industries, instrumentation systems, decorative applications and general industrial piping systems.
Stainless steel welded tubes are available in a wide range of outside diameters, wall thicknesses and lengths. Custom sizes and cut lengths can also be supplied according to project specifications and application requirements.
SS 316 and SS 316L welded tubes are commonly recommended for corrosive environments due to their enhanced resistance to chlorides, chemicals and marine exposure. For highly aggressive conditions, SS 904L may be considered.
Stainless steel welded tubes undergo Hydrostatic Testing, Eddy Current Testing, PMI Testing, Flattening Tests, Flaring Tests, Mechanical Testing, Chemical Analysis and Dimensional Inspection to ensure compliance with international standards.
Yes, stainless steel welded tubes are supplied with Mill Test Certificates (MTC) that confirm the chemical composition, mechanical properties and compliance with applicable ASTM and ASME standards.
The price of stainless steel welded tubes depends on the grade, size, wall thickness, surface finish, quantity and testing requirements. Contact our sales team for the latest pricing, stock availability and delivery schedule.