Stainless Steel Seamless Tubes Supplier & Manufacturer in India

Q: Do you provide custom sizes and lengths?

Yes, Solitaire Overseas supplies stainless steel seamless tubes in custom dimensions, specific wall thicknesses, and precision cut lengths to meet the unique requirements of your project.

What Are Stainless Steel Seamless Tubes?

Stainless steel seamless tubes are made by heating and piercing or extruding solid round billets, to form a unitary, homogenized piece of metal in a tubular form. Their construction does not feature a longitudinal seam (as welded alternatives do), which, once more, removes possible weak points, and they also allow the uniformity of mechanical properties along the entire length of the tube. Such a homogenous structure enables the material to endure extreme stress and a high pressure environment that can cause the joints formed by welding to break.

These tubes are markedly different to those of the normal industrial pipes as they are normally produced in smaller diameters with high degree of dimensional tolerance. The accuracy guarantees a more precise fit to special components and leads to a smooth finish of internal surfaces. This type of a refined bore is very important in ensuring a smooth passage of fluids without any accumulation of sediments or contaminants as high performance systems demand.

The stainless steel seamless tubes are vital in the harsh industries as they have exceptionally high resistance to extreme temperatures and hostile corrosive conditions. They are selected in preference, in the chemical processing industry, oil and gas extraction, power plants and high pressure steam systems. The reliability and long service life of seamless tubing is a vital safety margin in more complicated operations in these industries where performance and reliability are paramount.

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Check price of SS 304/304L/304H Pipes, SS 310 Pipes, SS 316 / 316L Pipes

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Stainless Steel Seamless Tubes Manufacturer, Supplier & Exporter in India

Solitaire Overseas is a leading manufacturer and exporter of high precision stainless steel seamless tubes. Our products are designed to be the most reliable, and their structure is homogenous and makes them the best in high-pressure and extreme temperature conditions.

We are a leading supplier in India and we have a lot of grades such as 304, 304L, 316, 316L and 321. All tubes are produced to comply with high international standards including ASTM A213 and A269 making them the tubes of choice in the oil and gas, pharmaceutical and power generation industries across the world.

Contact us for Stainless Steel Tubes today for high-quality tubing solutions tailored to your specific industrial requirements.

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Available Grades of Stainless Steel Seamless Tubes
Stainless Steel Seamless Tube Standards
Chemical Composition of Stainless Steel Seamless Tubes
Mechanical Properties of ASTM A312M Stainless Steel Seamless Tubing
Sizes, Dimensions & Tolerances of Stainless Steel Seamless Tubes
Stainless Steel Seamless Tubes Manufacturing Process
Stainless Steel Tubing Pressure Rating
Stainless Steel Seamless Tube Sizes
Types Of Stainless Steel Seamless Tubes
Applications of Stainless Steel Seamless Tubes
Why Choose Solitaire Overseas for Stainless Steel Seamless Tube?
Related Products
Frequently Asked Questions About Stainless Steel Seamless Tubes

Available Grades of Stainless Steel Seamless Tubes

We offer stainless steel seamless tubes in a wide range of austenitic and heat-resistant grades, including:

SS 304 / 304L – Excellent corrosion resistance and formability
SS 316 / 316L – Superior resistance to chlorides and chemical environments
SS 321 – Stabilized grade suitable for high-temperature applications
SS 310 / 310S – High oxidation and heat resistance
SS 347 / 347H – Ideal for pressure and elevated temperature service

Other grades can be supplied on request as per project requirements.

Stainless Steel Seamless Tube Standards

We supply stainless steel seamless tubes manufactured in accordance with international ASTM, ASME, and EN standards, including:

ASTM A213 – Seamless ferritic and austenitic alloy steel tubes for boilers, superheaters, and heat exchangers
ASTM A269 – Seamless tubes for general service applications
ASTM A249 – Tubes for heat exchangers and condensers
ASTM A312 – Seamless pipes and tubes for high-temperature and corrosive service

All tubes are supplied with mill test certificates and full traceability.

Chemical Composition of Stainless Steel Seamless Tubes

The following table details the precise chemical breakdown and alloying elements for various grades of seamless tubing to ensure compatibility with specific corrosive environments.

Grade	C	Mn	P	S	Si	Cr	Ni	Mo
TP304	0.08 max	2.00 max	0.045 max	0.030 max	1.00 max	18.0–20.0	8.0–11.0	–
TP304L	0.035 max	2.00 max	0.045 max	0.030 max	1.00 max	18.0–20.0	8.0–13.0	–
TP316	0.08 max	2.00 max	0.045 max	0.030 max	1.00 max	16.0–18.0	10.0–14.0	2.0–3.0
TP316L	0.035 max	2.00 max	0.045 max	0.030 max	1.00 max	16.0–18.0	10.0–14.0	–

Mechanical Properties of ASTM A312M Stainless Steel Seamless Tubing

This data highlights the structural strength and ductility metrics required for ss seamless tubing to perform reliably under high-stress industrial applications.

Steel Grade	Tensile Stress (N/mm² MIN)	Proof Stress (N/mm² MIN)	Elongation (% MIN)	Hardness (HRB MAX)
SUS304	520	205	40	90
SUS304L	480	175	40	90
SUS310S	520	205	40	90
SUS316L	480	175	40	90
SUS321	520	205	40	90

Sizes, Dimensions & Tolerances of Stainless Steel Seamless Tubes

Stainless steel seamless tubes are available in a wide range of outer diameters, wall thicknesses, and lengths to meet specific application needs.

Outer Diameter (OD): Small precision sizes to large diameters
Wall Thickness: Light, medium, and heavy wall schedules
Length: Random, double random, or cut-to-length
Surface Finish: Annealed & pickled, bright annealed, or polished

Tubes are manufactured with tight dimensional and thickness tolerances, making them suitable for critical heat transfer and pressure applications.

Stainless Steel Seamless Tubes Manufacturing Process

Our stainless steel seamless tubes are manufactured using advanced production techniques to ensure consistent quality:

Selection of high-quality stainless steel billets
Hot extrusion or piercing
Cold drawing / cold rolling for precision
Heat treatment and solution annealing
Pickling, straightening, and finishing
Final inspection and testing

This process ensures excellent mechanical strength, uniform grain structure, and superior surface finish.

Stainless Steel Tubing Pressure Rating

The working pressure ratings listed below are calculated to ensure safe operation under standard conditions, helping engineers select the correct wall thickness for high-pressure systems.

Pipe O.D. (in.)	Wall Thickness (in.)	Working Pressure (psig)
1/8	0.028	7900
1/8	0.035	10100
1/4	0.028	3700
1/4	0.035	4800
1/4	0.049	7000
1/4	0.065	9500
5/16	0.028	3700
5/16	0.035	5400
5/16	0.049	7300
3/8	0.035	4400
3/8	0.049	6100
1/2	0.035	3200
1/2	0.049	4400
3/4	0.035	2200
3/4	0.049	3000
3/4	0.065	4000
1	0.049	2200
1	0.065	2900

Stainless Steel Seamless Tube Sizes

Our comprehensive size range covers various outside diameters and wall thicknesses to provide precision-engineered solutions for diverse industrial tubing requirements.

Wall Thickness (inches)	SS Seamless Tube Sizes (O.D.)
.010	1/16", 1/8", 3/16"
.020	1/16", 1/8", 3/16", 1/4", 5/16", 3/8"
.028	1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 3/4", 1", 1 1/2", 2"
.035	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
.049	3/16", 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
.065	1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/2", 3"
.083	1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 7/8", 2", 2 1/2", 3"
.095	1/2", 5/8", 1", 1 1/4", 1 1/2", 2"

Types Of Stainless Steel Seamless Tubes

Stainless Steel Seamless Pipe 904l /015cr21ni26mo5cu2/1.4539 inch mm sizes customized

AISI 316 316l 304 seamless stainless steel pipe

Stainless steel pipes seamless SIZE 4" tube 12M long PIPE

sch80 316L 304l stainless steel seamless tube steel pipe

ASTM a423 a1 seamless steel pipe Boiler air heater tube

4 inch ss 316 stainless steel seamless pipes tube

304 Large diameter stainless steel seamless pipe 10 inch

1/2" 304 Bright Annealed Seamless Stainless Steel Pipe

Custom Size 3 Inch Stainless Seamless 4 Sch 40 Steel Pipe

ASTM A213 AISI304 304L 304H Stainless Steel Seamless Heat Exchanger Tubes size 19.05x2.77x4454mm

Customized size seamless stainless steel pipe a312 gr tp304l

stainless steel seamless ss304 pipe sizes for exhaust

Testing & Quality Assurance of SS Seamless Tubes

All stainless steel seamless tubes supplied by Solitaire Overseas undergo strict quality control and testing procedures, including:

Chemical composition analysis
Mechanical testing (tensile, hardness, flattening)
Hydrostatic or non-destructive testing (NDT)
Eddy current and ultrasonic testing
Dimensional and visual inspection
Mill Test Certificates (EN 10204 3.1) are provided with every shipment.

Applications of Stainless Steel Seamless Tubes

Due to their strength, corrosion resistance, and reliability, stainless steel seamless tubes are widely used in:

Heat Exchangers & Condensers
Boilers & Superheaters
Oil & Gas Processing Plants
Petrochemical & Chemical Industries
Power Generation Plants
Pharmaceutical & Food Processing Equipment
Instrumentation & Hydraulic Systems

Their seamless construction makes them ideal for environments involving high pressure, temperature fluctuations, and corrosive media.

Why Choose Solitaire Overseas for Stainless Steel Seamless Tube?

Reliable supplier and exporter of stainless steel seamless tubes
Wide stock range and custom size availability
International quality standards compliance
Competitive pricing and timely delivery
Export packaging and global logistics support

We serve clients across oil & gas, power, chemical, and engineering industries worldwide.

Looking to buy Stainless Steel Seamless Tubes? Contact Solitaire Overseas today to discuss your requirements and receive a detailed, competitive price quote.