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Email
sales@tubotechalloys.com -
Phone
+91 9769961320 -
Address
Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004
Phone
+91 9769961320Address
Pathan Durgadevi Udyan, Ground Floor, 25 Plot No 74/80, Patra Chawl, Maruti , Mandir Marg, Second Street, Girgaon, Mumbai, Maharashtra 400004At Tubotech, we specialize within the manufacture and supply of exceptional Stainless Steel Capillary Tubes for industries that call for precision, reliability, and corrosion resistance. These tubes are relatively thin-walled and come with tight dimensional tolerances, making them ideal for programs in instrumentation, scientific devices, analytical systems, and fluid switch structures.
Our Stainless Steel Capillary Tubes are to be had in seamless and welded forms, and we provide a huge range of sizes and finishes. We have set up itself as a main Stainless Steel Capillary Tube dealer in India, with an increasing international presence due to our commitment to fine, activate delivery, and customer satisfaction.
While instrumentation fittings aren’t part of boiler tubes at once, they may be essential in many systems where boiler tubes are deployed. Below is the usual specification chart for Instrumentation Fittings that may accompany boiler tubes in complex installations.
| Parameter | Specification |
|---|---|
| Material Grade | SS 304, SS 316, SS 316L, Duplex 2205 |
| Connection Type | Compression, NPT, BSPT, BSPP, Welded |
| Pressure Rating | Up to 6000 PSI |
| Temperature Range | -50°C to +400°C |
| Tube OD Size Range | 1/16” to 2” (Imperial), 3mm to 50mm (Metric) |
| End Connections | Male/Female Thread, Socket Weld, Butt Weld |
| Standards Complied | ASTM A276, ASTM A182, ASME B16.11 |
| Surface Finish | Polished, Pickled, Bright Annealed |
| Testing | Hydrostatic, Pneumatic, PMI, Radiography |
Tubotech uses only certified stainless steel grades for capillary tubes, ensuring high purity, excellent formability, and corrosion resistance. Below is the typical chemical composition of our most common grades:
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.75 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | 0.030 |
| Chromium (Cr) | 18.0–20.0 |
| Nickel (Ni) | 8.0–10.5 |
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.75 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.0–18.0 |
| Nickel (Ni) | 10.0–14.0 |
| Molybdenum (Mo) | 2.0–3.0 |
Stainless Steel Capillary Tube offer excellent mechanical strength, even in small dimensions. Their resilience under pressure and ability to withstand mechanical stress make them ideal for critical applications.
| Property | SS 304 | SS 316 |
|---|---|---|
| Tensile Strength | ≥ 515 MPa | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa | ≥ 205 MPa |
| Elongation | ≥ 35% | ≥ 35% |
| Hardness | ≤ 90 | ≤ 90 |
These mechanical properties are maintained even at thin wall thicknesses, allowing safe use in pressurized systems.
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
We offer a comprehensive range of capillary tube types based on customer-specific use cases:
Precision Cut-to-Length Tubes
– Custom lengths available for OEM applications.
We supply capillary tubes in a wide range of diameters and wall thicknesses to suit various precision applications.
| Outer Diameter (OD) | 0.25 mm to 12.0 mm |
| Wall Thickness | 0.10 mm to 1.50 mm |
| Length | Up to 30 meters (straight or coil) |
Custom dimensions and tolerances are available on request. We adhere to tight tolerance standards such as ±0.01 mm in OD and ±10 mm in length.
Use the following chart to estimate weight per meter of various tube sizes. (Based on SS 316 density = 8.00 g/cm³)
| OD (mm) | Wall (mm) | Weight (kg/m) |
|---|---|---|
| 1.0 | 0.2 | 0.012 |
| 2.0 | 0.25 | 0.027 |
| 3.0 | 0.3 | 0.052 |
| 4.0 | 0.5 | 0.099 |
| 6.0 | 0.6 | 0.213 |
| 8.0 | 0.8 | 0.376 |
| 10.0 | 1.0 | 0.597 |
| 12.0 | 1.0 | 0.738 |
Note: Weights may additionally range based on wall thickness and layout specifications.
Thanks to their dimensional accuracy and superior material integrity, Tubotech’s stainless steel capillary tubes are used in a variety of critical and demanding sectors:
Every Stainless Steel Capillary Tube we produce meets
the most rigorous dimensional tolerances for critical-use applications.
We supply capillary tubes in various grades including
SS 304, SS 316, SS 316L, and more, based on your environment and process compatibility.
We offer ultra-clean electropolished
capillary tubes ideal for semiconductor and pharmaceutical applications.
Tubotech maintains a ready stock
of standard sizes and also offers custom lengths, tolerances, and surface finishes.
Each batch is tested for
composition, mechanical strength, and surface quality. We provide full traceability and
Material Test Certificates (MTC) with every order.
We deliver across India, Europe,
Middle East, and Southeast Asia, ensuring packaging that meets international export standards.
If you are looking for a reliable Stainless Steel Capillary Tube supplier in India, Tubotech has the product range, technical expertise, and delivery capability to meet your project requirements—no matter how demanding.
Tubotech delivers precision-engineered tubing, fittings, and fasteners with innovative solutions and customizable options. Trusted for quality and durability, we serve industries requiring reliable, high-performance piping and instrumentation products.