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316 Stainless Steel Seamless Tube Manufacturers in India - STEELAGE ALLOYS

India has become a global leader in stainless steel manufacturing, and Steelage Alloys stands as a top manufacturer and supplier of high-quality 316 stainless steel seamless tubes. Known for their exceptional corrosion resistance, strength, and durability, these tubes are widely used across industries such as chemical processing, pharmaceuticals, food & beverage, marine, oil & gas, and petrochemical sectors.

As one of India’s leading suppliers, Steelage Alloys ensures that every SS 316 seamless tube is manufactured from carefully selected raw material, tested at every stage, and finished with precision to meet ASTM A213, A269, and A312 specifications. Our advanced facilities and skilled workforce allow us to maintain a consistent output that aligns with the evolving requirements of our global clients.

Introduction to 316 Stainless Steel Seamless Tube

Being seamless, these tubes are manufactured without welding, ensuring uniform wall thickness, superior mechanical properties, and no weak points along the tube seam. This makes them ideal for high-pressure, high-temperature, and critical applications.

316 seamless tubes are produced without welded joints through precision hot extrusion or cold drawing methods, resulting in products with uniform structure, high integrity, and exceptional pressure-bearing capabilities.

Why Choose 316 Stainless Steel Seamless Tube?

Molybdenum enhances resistance to chloride attack, making it ideal for seawater and saline environments.
Maintains tensile and yield integrity across wide temperature ranges.
Performs efficiently in continuous service up to 870°C and intermittent exposure up to 925°C.
Easily fabricated, welded, and machined while retaining performance.
Suitable for sanitary and hygienic applications in pharma and food industries.
Seamless design delivers longer service with reduced maintenance costs.

Technical Specifications of 316 Stainless Steel Seamless Tube

Property	Range / Specification
Grades	SS 316, 316L, 316Ti
Standards	ASTM A213, ASTM A269, ASTM A312 / ASME SA213, SA312
Outer Diameter	6 mm – 610 mm
Wall Thickness	0.8 mm – 30 mm
Length	Random, Double Random, or custom-cut up to 12 meters
Form	Round, Square, Rectangular, Hydraulic, U-Bent
Finish	Mill Finish, Bright Annealed, Mirror Polished, Pickled
Ends	Plain, Beveled, or Threaded

Manufacturing Process Overview

Premium-grade 316 stainless steel billets are examined for cleanliness and composition.
Heated billets are pierced through mandrels to form hollow shells.
Tubes are elongated and reduced in diameter using pilger mills until the required size is reached.
Tubes undergo solution annealing to enhance corrosion resistance and structural uniformity.
Acidic pickling removes oxide scales for a clean, smooth surface.
Non-destructive evaluation methods (ultrasonic, eddy current, hydrostatic) confirm internal and external soundness.
Tubes are straightened, visually inspected, measured, and surface-coated before packaging.

Key Features and Benefits of 316 Stainless Steel Seamless Tube

Key Features:

Seamless uniformity for leak-proof performance.
Superior resistance to chloride-induced corrosion.
Smooth bore for minimal fluid friction loss.
High heat tolerance suitable for condenser or heater systems.
Easily weldable with TIG and MIG techniques.

Benefits:

Extended product life even in aggressive media.
Minimal maintenance requirements, reducing overall lifecycle costs.
Enhanced hygiene and surface purity for sanitary applications.
Efficiency in high-pressure systems without deformation.

Chemical Composition Of Stainless Steel Seamless Tube

Grade	Chemical Composition (%)
Grade	C ≤	Si ≤	Mn ≤	P ≤	S ≤	Ni	Cr
201	0.15	1.00	5.5–7.5	0.5	0.03	3.50–5.50	16.00–18.00
202	0.15	1.00	7.5–10.0	0.5	0.03	4.00–6.00	17.00–19.00
304	0.08	1.00	2.00	0.045	0.03	8.00–11.00	18.00–20.00
304L	0.03	1.00	2.00	0.045	0.03	8.00–12.00	18.00–20.00
309	0.2	1.00	2.00	0.04	0.03	12.00–15.00	22.00–24.00
309S	0.08	1.00	2.00	0.045	0.03	12.00–15.00	22.00–24.00
310	0.25	1.50	2.00	0.04	0.03	19.00–22.00	24.00–26.00
310S	0.08	1.00	2.00	0.045	0.03	19.00–22.00	24.00–26.00
316	0.08	1.00	2.00	0.045	0.03	10.00–14.00	16.00–18.00
316L	0.03	1.00	2.00	0.045	0.03	10.00–14.00	16.00–18.00
316Ti	0.08	1.00	2.00	0.045	0.03	10.00–14.00	16.00–18.00
2205	0.03	1.00	2.00	0.03	0.02	4.50–6.50	22.00–23.00
410	0.15	1.00	1.00	0.04	0.03	0.6	11.50–13.50
430	0.12	0.12	1.00	0.04	0.03	0.6	16.00–18.00

Dimensional Range & Standards

Range:

Outer Diameter: 6 mm to 600 mm
Wall Thickness: 0.5 mm to 25 mm
Length: Up to 12 meters (customizable)
Pipe Sizes: 1/8” NB to 24” NB

Mechanical Properties of 316 Stainless Steel Seamless Tube

Property	Value
Tensile Strength	Minimum 515 MPa (75 KSI)
Yield Strength (0.2% offset)	Minimum 205 MPa (30 KSI)
Elongation	Minimum 35–40% in 2 inches
Rockwell Hardness (B scale)	Maximum 95
Modulus of Elasticity	Approximately 200 GPa (29,000 ksi)
Density	Around 8,000 kg/m³

Customization Options

Custom Sizes: Tubes manufactured to precise diameters and lengths.
Special Finishes: Options include mirror polish, matte, pickled & passivated, or annealed surfaces.
Fabrication & Welding: Tubes can be fabricated or welded as per client requirements.
Heat Treatment: Solution-treated or annealed for enhanced mechanical performance.

Packaging and Delivery

Protective Wrapping: Tubes are wrapped with anti-corrosive materials or capped to prevent contamination.
Wooden Crates: Heavy tubes are packed securely to prevent damage during transit.
Cleanroom-Ready Packaging: Available for pharmaceutical and food-grade applications.
Timely Delivery: Domestic and international deliveries are ensured with full documentation and certification.