SS 316 & 316L Welded Tubes Manufacturer
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Midland Alloys Inc. is a leading stainless steel 316 welded tubes manufacturer and a trusted stainless steel 316L welded tube supplier. We deliver premium-grade SS 316 & 316L welded tubing for demanding industrial systems. These molybdenum-bearing austenitic stainless steels offer strong resistance to corrosion, especially in chloride and marine environments. They perform reliably in acidic, chemical, and saline media where ordinary stainless steel grades fail. Our welded tubes are formed with precision for process lines, structural frameworks, and fluid handling networks across critical sectors. These welded tubes are used in chemical plants, marine systems, food processing units, and oil and gas facilities for their stable service life. Every batch is produced under strict quality checks, tested to international standards, and supplied worldwide with full traceability. Our SS 316 and 316L welded tubes are built to last.
What is Stainless Steel 316 & 316L Welded Tubing?
Stainless steel 316 and 316L welded tubing is a molybdenum-alloyed austenitic stainless steel. They are designated as UNS S31600 and UNS S31603, respectively. These grades are formed from stainless strip or plate and are shaped into tubes. Then they are joined by longitudinal welding under controlled conditions. SS 316L is the low-carbon version of 316, developed to reduce carbide precipitation during welding. The lower carbon level improves weldability and preserves corrosion resistance after fabrication, especially in heat-affected zones. Chromium provides basic corrosion resistance, nickel stabilises the austenitic structure and molybdenum enhances resistance to pitting and crevice attack.
SS 316 welded tubes and SS 316L welded tubes are commonly produced in compliance with the ASTM A249 and ASTM A269 standards for heat exchangers and general service tubing. They provide reliable performance in tough media.
Benefits of SS 316 & 316L Welded Tubes
Corrosion resistance defines the value of these grades. They are built for harsh service and long exposure to moisture, salts, and chemicals. Performance stays steady over time.
Key 316L welded tubing advantages include:
- Excellent corrosion resistance in chloride environments
- Improved pitting and crevice corrosion resistance
- Superior weldability, especially in the 316L grade
- High strength and durability under load
- Good performance in marine conditions
- Hygienic surface suitable for food and pharma use
- Long service life in aggressive chemical media
- Low maintenance requirements in process lines
- Cost-effective welded construction for large projects
Specifications of SS 316 & 316L Welded Tubes
Our SS 316 and 316L welded tubes are produced in compliance with the ASTM A249, ASTM A269, and equivalent ASME standards. Specifications of SS 316 and 31L cover dimensions, tolerances, finish, and testing requirements for industrial service.
Tube OD : 1/2" OD - 12" OD
ASTM /ASME SA269/A269
Welded
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random, Standard & Cut length
Plain Ends (PE), Threaded Ends (TE), Bevelled Ends (BW), Grooved Mechanical Joints or Grooved Ends, TBE (Treaded Both Ends)
SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements
Types of SS 316 & 316L Welded Tubes
Our SS 316 welded tube types and 316L welded tube forms are engineered for varied industrial systems. These tubes are used in marine piping, chemical plants, food and pharma units, and structural fabrication projects where corrosion resistance matters every day. Its shape selection depends on load, flow, and layout constraints.
TUBES Forms
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Round welded tubesThis form is ideal for fluid transport and process piping
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Square welded tubesSquare welded tubes are used in structural and architectural work
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Rectangular welded tubesThis form of 316 and 316L welded pipe is applied in equipment frames and supports
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Heat exchanger tubesThis form is built for corrosive heat transfer systems
- Boiler tubes
Boiler tubes are suitable for pressure and temperature service
Contact us today to discuss how Stainless Steel 316/316L Welded
Tubes can benefit your application. Whether you need guidance in selecting the right Tubes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
The chemical balance of chromium, nickel, and molybdenum provides corrosion resistance and structural stability in aggressive service conditions.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 316 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.00 – 18.00 | 2.00 – 3.00 | 11.00 – 14.00 | 67.845 min |
| SS 316L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.00 – 18.00 | 2.00 – 3.00 | 10.00 – 14.00 | 68.89 min |
Mechanical strength supports pressure handling and structural integrity across varied operating conditions.
| Grade | Density | Melting Point | Tensilee Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 316 | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| SS 316L | 8.0 g/cm3 | 1399 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Stainless Steel Welded Tubes Grades We Offer
How SS 316/316L Welded Tubes Are Manufactured
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Industrial Applications of SS 316 & 316L Welded Tubes
SS 316 and 316L welded tubes serve chemical processing plants where acids and chlorides are common. Marine and offshore piping systems use them for saltwater exposure. Food and beverage lines depend on their clean surface finish. Pharmaceutical equipment requires low carbon 316L to prevent weld decay. Oil and gas industries apply them in process and flow lines. Heat exchangers and condensers operate safely with these tubes under thermal stress. Water treatment and desalination plants value their resistance to brine. Structural and architectural projects also use them where strength meets corrosion control.
Why Choose Midland Alloys Inc for SS 316 & 316L Welded Tubes?
We at Midland Aloys Inc. specialise in corrosion-resistant stainless steel tubing and supply quality SS 316 welded tubes built for critical service. We maintain strict process control from raw material sourcing to final inspection, with both in-house and third-party testing carried out as per ASTM norms. These include hydro, eddy current, and PMI checks. Each order is packed using secure export methods to prevent transit damage, while full documentation and traceability are maintained for compliance. Our team supports global exports across major markets, ensuring reliable stock levels and responsive service backed by consistent on-time delivery commitments. We stand by every shipment.
FAQs
Are 316L welded tubes suitable for food processing?
Yes. 316L offers a hygienic surface, strong corrosion resistance, and low carbon content that prevents weld contamination. This makes it suitable for food-grade systems.
What standards apply to SS 316 and 316L welded tubing?
Common standards that apply to SS 316 and SS 316L tubing include ASTM A249 for heat exchanger tubes and ASTM A269 for general service stainless steel tubing.
Do SS 316L tubes require post-weld heat treatment?
In most cases, SS 316L tubes do not require post-weld heat treatment. The low carbon content reduces carbide precipitation. That’s why post-weld heat treatment is generally not required for corrosion resistance.
