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Stainless Steel 316 Capillary Tubes Manufacturer, Supplier & Exporter in India

Stainless Steel 316 Capillary Tubes are precision tubes manufactured using molybdenum-bearing austenitic stainless steel known for excellent corrosion resistance, durability, and high-temperature performance. These tubes are widely used in instrumentation systems, medical equipment, hydraulic systems, chromatography, petrochemical plants, and food processing industries. Available in seamless, welded, electropolished, and semi-seamless forms, ASTM A213 and ASTM A269 SS 316 capillary tubes offer superior dimensional accuracy and pressure handling capabilities.

We are counted as one of the most renowned Stainless Steel 316 Capillary Tubes manufacturer & supplier that cater to the specific requirements of high-performance application with tight tolerances, high corrosion resistance, and an impeccable internal surface finish. Made with the highest quality raw material with well-adopted advanced manufacturing process, our products are utilized extensively in instruments, aerospace, chemical processing, pharmaceutical, and hydraulic systems. Available are a multitude of solutions including Stainless Steel 316 Seamless Capillary Tubes, SS 316 Welded Capillary Tube, Stainless Steel 316 Electropolished Capillary Tube and the Stainless Steel 316 Semi-Seamless Capillary Tubes which can be fabricated as per desired wall thickness and sizes.

As one of the seasoned ASTM A312/A213 SS 316 Capillary Tubes Manufacturer, we deliver products that adhere to various international quality standards relating to tolerances, pressures and corrosion resistance.

What are Stainless Steel 316 Capillary Tubes?

Small diameter capillary tubes that are made to close tolerances and an excellent finish, stainless steel 316 capillary tubes are precision-drawn with a molybdenum-alloyed stainless steel that increases the tube's ability to resist chlorides, acids, and a variety of chemicals.

Compared to conventional tubing, SS 316 capillary tubes offer:

  •   Higher corrosion resistance
  •   Excellent pressure handling
  •   Superior mechanical strength
  •   Smooth internal flow characteristics
  •   High temperature resistance
  •   Excellent weldability and formability

These tubes are commonly supplied under ASTM A213, ASTM A269, and ASTM A312 specifications for industrial and instrumentation applications.

Table of Content


ASTM A213 SS 316 Capillary Tube Manufacturer in India


A high quality SS 316 capillary tube for high temperature, high pressure and all kind of industries, being the #1 supplier & manufacturer of ASTM A213 Stainless Steel Capillary tubing. ASTM A213 applies to tubing (which may be ordered to two types according to the type of service it is to be used) of seamless ferritic and austenitic alloy steel. For heat exchangers, condensers and like service.

Our manufacturing process ensures:

  •   Tight dimensional tolerances
  •   Burr-free edges
  •   Leak-proof performance
  •   Superior internal cleanliness
  •   Consistent wall thickness

We supply tubes in annealed, bright annealed, polished, and electropolished finishes depending on customer requirements.

Types of Stainless Steel 316 Capillary Tubes


Stainless Steel 316 Seamless Capillary Tubes

Manufactured without any welded joints, the Stainless Steel 316 Seamless Capillary Tubes are well-suited to the high-pressure instrument applications and rigorous industrial process that call for utmost strength, leak resistance, and superb chemical & stress corrosion resistance.

Applications include:

  •   Hydraulic systems
  •   Medical devices
  •   Gas lines
  •   Analytical instruments
  •   Aerospace tubing

SS 316 Welded Capillary Tube

SS 316 Welded Capillary Tubes are produced from the shaping of welded steel strips using high technologies like TIG welding. Welded capillary tubes of this grade are popular choices for the low and medium pressure application requirement.

Advantages:

  •   Smooth surface finish
  •   Excellent dimensional consistency
  •   Cost-effective manufacturing
  •   Good corrosion resistance

Stainless Steel 316 Electropolished Capillary Tube

A Stainless Steel 316 Electropolished Capillary Tube has had microscopic imperfections smoothed off via electro-polishing and makes an ideal ultra-clean candidate tubing for applications within pharmaceutical industries, food processing industries, and semiconductor industries.

Benefits include:

  •   Reduced contamination risk
  •   Improved corrosion resistance
  •   Enhanced cleanliness
  •   Better fluid flow
  •   Reduced bacterial adhesion

Stainless Steel 316 Semi-Seamless Capillary Tubes

Our Stainless Steel 316 Semi-Seamless Capillary Tubes use the strength of seamless construction with the dimensional stability of the welded process for use in the most demanding instrumentation or process control needs.

Stainless Steel 1.4401 / 1.4436 Capillary Tube Equivalent Grades


Grade UNS Number DIN / EN Equivalent
SS 316S316001.4401
SS 316LS316031.4404
SS 316HS316091.4919
SS 316TiS316351.4571
SS 316 Modified—1.4436

Stainless Steel 1.4401 / 1.4436 Capillary Tube grades are widely used in marine, chemical, and pharmaceutical industries due to their excellent corrosion resistance.

ASTM A269 Grade 316L Seamless Capillary Tubes Specifications


Detailed Specification Chart

Specification Details
Product NameStainless Steel 316 Capillary Tubes
Material GradeSS 316 / 316L
StandardsASTM A213, ASTM A269, ASTM A312
TypeSeamless, Welded, ERW, Semi-Seamless
Outer Diameter0.30 mm to 31.75 mm
Wall Thickness0.06 mm to 3.00 mm
LengthSingle Random, Double Random, Cut Length
FinishAnnealed, Bright Annealed, Pickled, Polished, Electropolished
Surface Finish180G, 320G, 400G, Mirror Finish
FormRound Capillary Tubes
End TypePlain End, Beveled End
Manufacturing MethodCold Drawn / Cold Rolled
ToleranceAs per ASTM / ASME Standards
TestingPMI Test, Flattening Test, Hydrostatic Test, Eddy Current Test, Flaring Test
PackagingWooden Boxes, Plastic Caps, Bundles
OriginIndia
Export CountriesUAE, USA, Saudi Arabia, Germany, Singapore, South Africa

Chemical Composition of SS 316 Capillary Tubes


Element Composition (%)
Chromium (Cr)16.0 – 18.0
Nickel (Ni)10.0 – 14.0
Molybdenum (Mo)2.0 – 3.0
Carbon (C)0.08 Max
Manganese (Mn)2.0 Max
Silicon (Si)1.0 Max
Phosphorus (P)0.045 Max
Sulfur (S)0.03 Max

Mechanical Properties of Stainless Steel 316 Capillary Tubes


Our stainless steel 316 capillary tubes are manufactured to deliver excellent tensile strength, ductility, and toughness, ensuring reliable performance under demanding operating conditions.

Property Value
Tensile Strength515 MPa Min
Yield Strength205 MPa Min
Elongation40%
Hardness95 HRB Max
Density8.0 g/cm³
Melting Point1375°C – 1400°C

Applications of SS 316 Capillary Tubing


SS 316 Capillary Tubing is widely used in industries requiring precision flow control, corrosion resistance, and high-pressure performance.

Major applications include:

  •   Instrumentation systems
  •   Chromatography equipment
  •   Hydraulic systems
  •   Medical and surgical instruments
  •   Petrochemical plants
  •   Food processing units
  •   Semiconductor manufacturing
  •   Aerospace and defense industries
  •   Oil & gas pipelines
  •   Pharmaceutical processing systems

Why Choose Us for SS 316 Capillary Tubes?


As a reliable SS 316 Capillary Tubing Dealer in India, we focus on supplying precision-engineered products that meet international quality standards.

Our advantages include:

  •   Wide stock availability
  •   Customized tube dimensions
  •   Fast delivery schedules
  •   Third-party inspection support
  •   Competitive pricing
  •   Export-quality packaging
  •   Strict quality control procedures
  •   Compliance with ASTM and ASME standards

We are also recognized among leading SS 316 Capillary Tubes Exporters supplying products globally for industrial and instrumentation applications.

Frequently Asked Questions


What is the difference between SS 316 and SS 316L capillary tubes?

SS 316L contains lower carbon content compared to SS 316, which improves weldability and reduces carbide precipitation during welding.

What are ASTM A269 grade 316L seamless capillary tubes used for?

ASTM A269 grade 316L seamless capillary tubes are widely used in instrumentation systems, pharmaceuticals, hydraulic systems, and precision fluid transfer applications.

Are electropolished SS 316 capillary tubes suitable for pharmaceutical applications?

Yes, Stainless Steel 316 Electropolished Capillary Tubes are highly suitable for pharmaceutical and food processing industries because of their ultra-clean internal surface finish and corrosion resistance.

Do you supply customized sizes in SS 316 capillary tubes?

Yes, customized outer diameter, wall thickness, and cut lengths are available based on project requirements.