Pressure & Instrumentation Tubing

Instrumentation Tubing for High-Pressure Systems

Plymouth^® delivers high-performance pressure and instrumentation tubing engineered to exceed the rigorous demands of critical process control and analytical systems. Utilizing our advanced manufacturing capabilities at our Salisbury mill, we produce precision seamless tubing in 304/L, 316/L, and specialized nickel alloys designed for performance in extreme temperature and high-pressure environments.

By integrating over 75 years of metallurgical expertise with ISO 9001 and PED certifications, Plymouth^® provides a proactive, American-made solution for the world’s most challenging corrosive applications.

Instrumentation Tubing for High-Pressure Systems

Pressure Tubing Specifications

ASTM A/B and ASME SA/SB Specifications	Grades	OD Range	Wall Range	Maximum Length
-213 Seamless Austenitic Alloy Steel Boiler, Superheater and Heat Exchanger Tubing	04/L, 316/L, 317/L, 347, others	0.250” – 1.000” 6.35mm – 25.4mm	0.016” – 0.100” 0.4064mm – 2.54mm	130’ 39.63m
-249 Welded Austenitic Tubing Boiler, Superheater and Heat Exchanger Tubing	304/L, 316/L, 317/L, 347, others Also available in H and N grades.	0.125” – 4.000” 3.175mm – 101.6mm	0.016” – 0.218” 0.4064mm – 5.54mm	48’ – 130’ 14.63m – 39.63m
-269 Seamless Austenitic Stainless Steel General Service Tubing	304/L, 316/L, 317/L, 347	0.125” – 1.500” 3.175mm – 38.1mm	0.016” – 0.120” 0.4064mm – 3.048mm	48’ – 130’ 14.63m – 39.63m
-270 Seamless Austenitic Stainless Steel Tubing	304/L, 316/L, AL-6XN^®	0.125” – 1.250” 3.175mm – 38.1mm	0.016” – 0.120” 0.4064mm – 3.048mm	48’ – 130’ 14.63m – 39.63m
-632 Seamless Austenitic Stainless Steel Tubing for General Service	304/L/N, 316/L/N, 321, 347	0.125” – 1.500” 3.175mm – 12.7mm	0.016” – 0.065” 0.4064mm – 1.651mm	130’ 39.63m
Seamless Nickel and Alloy Condenser and Heat Exchanger Tubing	400, 600, 625, 800, 825	0.125” – 1.500” 3.175mm– 38.1mm	0.016” – 0.120” 0.4064mm – 3.048mm	130’ 39.63m
-676 UNS N08367	AL-6XN^®	0.250” – 4.000” 6.35mm – 101.6mm	0.020” – 0.120” 0.508mm – 3.048mm	48’ – 130’ 14.63m – 39.63m

ASTM A/B and ASME SA/SB Specifications

Grades

OD Range

Wall Range

Maximum Length

-213 Seamless Austenitic Alloy Steel Boiler, Superheater and Heat Exchanger Tubing

04/L, 316/L, 317/L, 347, others

0.250” – 1.000”

6.35mm – 25.4mm

0.016” – 0.100”

0.4064mm – 2.54mm

130’

39.63m

-249 Welded Austenitic Tubing Boiler, Superheater and Heat Exchanger Tubing

304/L, 316/L, 317/L, 347, others

Also available in H and N grades.

0.125” – 4.000”

3.175mm – 101.6mm

0.016” – 0.218”

0.4064mm – 5.54mm

48’ – 130’

14.63m – 39.63m

-269 Seamless Austenitic Stainless Steel General Service Tubing

304/L, 316/L, 317/L, 347

0.125” – 1.500”

3.175mm – 38.1mm

0.016” – 0.120”

0.4064mm – 3.048mm

48’ – 130’

14.63m – 39.63m

-270 Seamless Austenitic Stainless Steel Tubing

304/L, 316/L, AL-6XN^®

0.125” – 1.250”

3.175mm – 38.1mm

0.016” – 0.120”

0.4064mm – 3.048mm

48’ – 130’

14.63m – 39.63m

-632 Seamless Austenitic Stainless Steel Tubing for General Service

304/L/N, 316/L/N, 321, 347

0.125” – 1.500”

3.175mm – 12.7mm

0.016” – 0.065”

0.4064mm – 1.651mm

130’

39.63m

Seamless Nickel and Alloy Condenser and Heat Exchanger Tubing

400, 600, 625, 800, 825

0.125” – 1.500”

3.175mm– 38.1mm

0.016” – 0.120”

0.4064mm – 3.048mm

130’

39.63m

-676 UNS N08367

AL-6XN^®

0.250” – 4.000”

6.35mm – 101.6mm

0.020” – 0.120”

0.508mm – 3.048mm

48’ – 130’

14.63m – 39.63m

Instrumentation Tubing

We use stainless and carbon steel extrusions as well as nickel alloy and stainless steel seamless tube to manufacture instrumentation tubing for commercial and nuclear tubing applications.

Downloads & Resources

File	Language	Size
Plymouth Heat Exchanger Tubing	EN	419 KB
Selecting Tubing Materials for Power Generation Heat Exchangers	EN	265 KB
Plymouth^® Product Catalog	EN	4 MB

Instrumentation Tubing for High-Pressure Systems

Instrumentation Tubing for High-Pressure Systems

Pressure Tubing Specifications

Instrumentation Tubing

Downloads & Resources

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