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Plymouth Aerospace Stainless Steel Tubing

The Plymouth Advantage  

Plymouth Tube Co. has been a leader in the manufacturing of Aerospace Steel Tubing since the Spirit of St. Louis Era (85+ years!) and has been consistently evolving with changes in technology. Within the past few years, Plymouth Tube Company Salisbury became the only North American Tube Manufacturer to be Nadcap accredited to perform Heat Treating. 



Specifying Plymouth Aerospace Steel Tubing ensures the quality and technical support the industry has come to expect from Plymouth Tube Company. Welded and Drawn Stainless Grades include: 21-6-9, 17-7PH, Custom 455, 625, AL6XN, 304/L, and 321. Seamless Stainless Grades include: 304/L, 316, 321 and 347. The only way to fly with integrity is to specify Plymouth Aerospace Tubing.


Aerospace Applications

In order to meet and exceed customer expectations, Plymouth consistently makes improvements and will continue to be a leader in the industry with superior quality, technical expertise, customer assistance as well as a extensive product offering for the key elements of industry including:

  • Fuel Lines
  • Hydraulic Lines
  • Bleed Lines
  • Cooling Lines
  • Structural Components
  • Ducting
  • Landing Gear
  • Engine Components


Seamless (Stainless Steel Tubing Specs)

OD Range: .125-1" (3.175-25.4mm)

Wall Range:  .016-.065" (.41-1.65mm)

Max Length: 50' (15m)

Grades:  304, 316, 321, 347, 600


Nadcap accreditation for heat treating 
ISO 9001:2008
AS9100 REV. B (Rev C audit scheduled for March 2012)
Rolls Royce UK approval
Pratt & Whitney LCS approvals
MMS, DMS, and BMS approved for Boeing work
Seeking GE S400 approval



Welded and Drawn (Stainless Steel Tubing)

OD Range: .188-4" (4.775-101.6mm)

Wall Range:  .016-.218" (.41-5.537mm)

Max Length: 50' (15m)

Grades:  304, 316, 321, 625, 718, AL6XN, 21-6-9, 17-7

Specifications:  Click here! 


Seamless (Carbon and Alloy)

OD Range: .125-2" (3.175-50.80mm)

Wall Range:  .020-.188" (.508-4.77mm)

Max Length: 86' (26m)

Grade: 4130

Specifications: MIL-T-6736B, AMS 6736B,  AMS6360

    • Nadcap approved for heat treating
    • High strength
    • Good corrosion resistance
    • Excellent weldability in the field


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