Instrumentation Tubes & Coils | Seamless SS 316L | Pannani Tubes

Instrumentation Tubes

High-Precision, Bright Annealed (BA) Seamless Tubes for Control Lines & Analyzers.

Product Range

Seamless SS Tubes
Bright Annealed

Seamless SS Tubes

ASTM A269 / A213. SS 316/316L/304L. Ultra-clean inner surface and perfectly round OD for leak-free compression fitting connections.

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Coiled Tubing
Continuous Length

Coiled Tubing

Seamless & Welded continuous coils (up to 1000 meters). Eliminates the need for multiple fittings in long tracing or hydraulic runs.

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Welded Instrumentation Tubes

Welded SS Tubes

ASTM A249. Cold drawn welded tubes with flushed weld seams. Cost-effective alternative for low to medium pressure pneumatic lines.

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Duplex Tubes
Offshore/Subsea

Duplex / Super Duplex

UNS S31803 (2205) and S32750 (2507). Exceptional pitting and chloride stress corrosion resistance for offshore oil & gas platforms.

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Exotic Alloy Tubes
High Temp/Corrosion

High Nickel Alloys

Inconel (600, 625), Monel (400), Hastelloy (C276), and 904L. Designed for extreme chemical, acidic, and high-temperature environments.

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Tube Fittings
Accessories

Double Ferrule Fittings

High-pressure compression fittings (Connectors, Unions, Tees). Engineered to mate perfectly with our precision tubing to prevent gas leaks.

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Standards & Material Grades

Stringent quality control to meet the demands of Process Control, Petrochemical, and Semiconductor industries.

Standard Material Family Common Grades Supplied Key Feature
ASTM A269 Austenitic Stainless Steel TP316, TP316L, TP304, TP304L General service, high corrosion resistance.
ASTM A213 Austenitic & Ferritic Alloy TP316Ti, TP321, TP310S Seamless, designed for elevated temperatures.
ASTM A789 / A790 Duplex & Super Duplex UNS S31803, S32205, S32750 High yield strength, prevents chloride pitting.
ASTM B163 / B165 Nickel Alloys Inconel 625, Monel 400, Hastelloy C276 Extreme sour gas (NACE MR0175) environments.

Dimensions & Tolerances

Outer Diameter (OD)

Imperial: 1/16" to 1" OD

Metric: 2 mm to 25 mm OD

Strict OD tolerances to ensure ferrule grip.

Wall Thickness (WT)

Inches: 0.020" to 0.134"

Metric: 0.5 mm to 3.0 mm

Available in standard BWG & SWG gauges.

Delivery Condition

Bright Annealed (BA)

Annealed & Pickled (AP)

Plugged ends to prevent internal contamination.

Need Mill Test Certificates?

All instrumentation tubing is supplied with EN 10204 3.1 MTCs. Third-party inspection (TPI) available on request.

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