Stainless Steel 316 Small Diameter Tubes are precision manufactured for use where excellent corrosion resistance, high strength and reliable performance in smaller systems is desired. These tubes are manufactured from SS 316 (UNS S31600) with a higher amount of chromium (16–18%), nickel (10–14%) and molybdenum (2–3%), which gives superior resistance to pitting, crevice corrosion and chloride containing environment as compared to SS 304. Tight dimensional tolerances, seamless and welded available to ensure constant fluid and gas flow in severe industrial applications. They have excellent weldability, durability and high-temperature properties and are suitable for critical process systems that demand a long service life. USA Piping Solution is a trusted Small Diameter Tubes Manufacturer & Supplier of Stainless Steel 316 Tubes with international-standard quality and customized as per customer requirements.
Specifications of Stainless Steel 316 Small Diameter Tubes
| Property / Category | Specification Details |
|---|---|
| Trade Name | Stainless Steel 316 Small Diameter Tube (Instrumentation & Capillary Tubing) |
| Outer Diameter (O.D.) Range | 0.20 mm to 25.4 mm OD (Microbore, Capillary, and Small Bore Sizes up to 1” Inch) |
| Wall Thickness (W.T.) Range | 0.05 mm to 2.5 mm |
| Wall Thickness / Schedule | BWG 25, BWG 22, BWG 20, BWG 18, BWG 16, BWG 14, BWG 12, BWG 10 (Schedules 5S, 10S, 40S, 80S according to ANSI B36.19 for standard small bore lines) |
| Available Tube Lengths | 20FT, 40FT, 2000mm, 3000mm, 6000mm, Continuous Coils up to 1000 meters, Custom Lengths |
| Available Tube Shapes | Hydraulic Tubing, Capillary Tube, Micro-bore Tube, Coiled Tubes, Pancake Coils, Oval Tube, U-Bend Tube, Rectangular Tube, Square Pipe/Tube, Elliptical Tubing, Round Tube |
| Standard Marking Parameters | Specification of Stainless Steel 316 Tube Material Grade (TP316 / TP316L) Outside Diameter (O.D.) and Wall Thickness (W.T.) Manufacturing Process (Seamless / Welded) Heat Number Manufacturer’s Name/Logo |
| Marking Sample (Seamless) | ASTM A269 / ASME SA213 TP316 1/4" O.D. x 0.035" W.T. TUBE SEAMLESS HEAT NO. XXXX |
| Surface Finish & Conditions | Polished, Bright Annealed (BA), Electrolytic Polished, Annealed & Pickled, Mirror (400#, 600#), Satin Finish (180#, 240#, 320#), HL (Hairline/Brushed), Mill Finish (2B), Dull |
| Manufacturing Methods | Cold Drawn Seamless (CDS), Cold Rolled, Seamless, Electric Resistance Welded (ERW), Cold Drawn Welded (CDW) |
| Approvals | BP, AD2000, KNPC, EIL, NORSOK M-650, L&T, HAF 604, IBR, ONGC, ISO 17025 for Laboratories, Saudi Aramco, Shell, PED, Merkblatt W0, PED 97/23/EC |
| Material Origin | UK, Latin-American, USA, Korean, Japanese, African, Gulf, Chinese, American, Ukrainian, European, Asian, Russian |
| Certifications Available | SSC, IBR, HIC, EN-10204:3.1, EN-10204:3.2, Sour-Service, NACE Compliance |
| Equivalent Standards | IS, JIS, AISI, CSA, UNI, KS, EN, ANSI, GB, GOST, NFA, DIN, SAE, ISO, ASTM, AWWA, BS, API |
| MTC / Quality Standards | IBR, EN 10204 3.1, NDE, Radiographic Testing (RT), PED, EIL, ISO 14001:2015, ISO 9001:2005, Ultrasonic Testing (UT), Eddy Current Testing |
| Dual Certification | Compliance with both ASTM A269/A213 TP316 and ASME SA269/SA213 TP316 specifications |
Types of Stainless Steel 316 Small Diameter Tubes
UNS S31600 Stainless Steel Schedule 5S Pipe
Stainless Steel WNR. 1.4401 Polished Pipe
Stainless Steel 316 Cold Drawn Seamless Pipe
SS 316 Welded Pipe
SS 316 Seamless Pipe
SS 316 Rectangular Pipe
SS 316 ERW Pipe
Schedule 40S ASTM A312 TP 316 Seamless Pipe
SA 312 TP 316 Thin Wall Pipe
ASTM A312 Gr TP 316 Exhaust Pipe
ASME SA 312 Grade 316 Round Pipe
ASME SA 312 Grade 316 Clad Pipe
316 Stainless Steel Square Pipe
316 Stainless Steel SCH 40 Seamless Pipe
316 SS Custom Pipe
Industrial Uses of Stainless Steel 316 Small Diameter Tubes
- Medical Device Manufacturing
- Pharmaceutical Processing Equipment
- Analytical & Laboratory Instruments
- Chemical Injection Systems
- Hydraulic & Pneumatic Control Systems
- Marine Instrumentation Systems
- Food & Beverage Processing Equipment
- Aerospace Fluid & Fuel Line Systems
Frequently Asked Questions
1. Why does 316/316L tubing get certified and sold as one combined grade instead of separately?
316/316L tubing is often supplied as a dual-certified grade because it meets the chemical requirements of both grades while providing the low carbon content of 316L for better weldability.
2. What's the allowable working pressure for a specific 316 tube OD and wall thickness at a given temperature?
The allowable working pressure depends on the tube's outside diameter, wall thickness, operating temperature, and the design code being followed, such as ASME B31.3.
3. When should I choose seamless vs. welded (ERW) small diameter 316 tubing?
Choose seamless tubing for high-pressure, critical, or precision applications. Welded (ERW) tubing is a cost-effective option for general-purpose and low- to medium-pressure services.
4. What cleanliness/passivation standards apply to 316L instrumentation tubing?
316L instrumentation tubing is commonly supplied with passivated surfaces and may comply with ASTM A967 or ASTM A380 cleaning and passivation standards, depending on the application.
5. Is 316/316L tubing NACE-compliant, and what hardness limit does NACE require?
Yes. 316/316L tubing can be supplied to meet NACE requirements for sour service. The applicable hardness limits depend on the specific NACE standard and service conditions.