Industrial Infrastructure Market

Decorative image

Engineered Shapes for Infrastructure

Modern industrial infrastructure relies on a foundation of structural integrity and critical performance to support global energy expansion and grid modernization.

As our industry prioritizes onshoring and long-term reliability, Plymouth® delivers high-performance cold drawn seamless, welded, and DOM tubing alongside precision-engineered near-net shapes that thrive in high-pressure, high-stress environments.

By leveraging over a century of metallurgical expertise, we provide the high-tolerance components necessary to streamline installations, reduce material waste, and ensure the operational safety of the world’s most demanding industrial systems

Industrial Infrastructure Applications

  • Expansion joint assemblies
  • Finger plate components
  • Railroad hardware systems
  • Tunnel support systems
  • Elevator sills and sill extensions
  • Handrails and architectural trim
Carbon Alloy

Engineered Shapes for Infrastructure

Modern industrial infrastructure relies on a foundation of structural integrity and critical performance to support global energy expansion and grid modernization.

As our industry prioritizes onshoring and long-term reliability, Plymouth® delivers high-performance cold drawn seamless, welded, and DOM tubing alongside precision-engineered near-net shapes that thrive in high-pressure, high-stress environments.

By leveraging over a century of metallurgical expertise, we provide the high-tolerance components necessary to streamline installations, reduce material waste, and ensure the operational safety of the world’s most demanding industrial systems

Industrial Infrastructure Applications

  • Expansion joint assemblies
  • Finger plate components
  • Railroad hardware systems
  • Tunnel support systems
  • Elevator sills and sill extensions
  • Handrails and architectural trim

Plymouth® Industrial Infrastructure Products

To ensure reliable performance in the world’s most demanding environments, Plymouth® industrial infrastructure products are manufactured through advanced cold drawing, hot extrusion, and bright annealing processes. Our production is anchored by ISO 9001:2015 and PED certifications, ensuring that every seamless, welded, and DOM tube meets the rigorous ASTM and ASME standards required for high-pressure energy, chemical, and utility systems. We validate every component through a suite of NDT—including ultrasonic, eddy current, and hydrostatic testing—guaranteeing the structural integrity and safety of critical infrastructure projects.

Cold Drawn Shapes

Plymouth® cold drawn shapes provide the cross-sectional consistency required for critical bridge and transport applications where failure is not an option:

  • Expansion joint assemblies
  • Finger plate components
  • Concrete reinforcement
  • Railroad hardware systems
  • Tunnel support systems

Cold Drawn Shape Specifications

Material Specifications 

Carbon & Alloys

US Grades in Series 1000, 4000, 6000, 8000, 9000 

Stainless Steel in Complex Geometries 

Series 300 & 400 Stainless Steel 

PH Grades in Rounds, Hexes or Octagons 

17-4, 17-7, 15-5, 13-8 

Exotic Alloys 

Monel 400, Inconel, Hastelloy, etc.

Shape Specifications

Solid, Round 

0.2500” – 3.750” OD 

Hexagon and Octagons, across flats 

0.3125” – 3.625” 

Rectangles and Squares 

0.625” per side min, 5.000” max 

Unique Shapes 

Greater than 0.625” 

Profile must fit within 6.500” Diameter Circle

Dimensional Specifications

Dimensional Tolerance, Standard* 

+/- 0.005” 

Fillet and Radii Tolerance, Standard* 

0.015” in Carbon, 0.360” in Stainless 

Ratio of Height vs. Width 

1 : 1.16 (Max.) 

Cross-Sectional Area 

0.125 sq. in. (Min.)

*Tighter Tolerances may be available

Stainless Steel & Carbon Steel Extrusions

Build stronger infrastructure with Plymouth®’s high-precision carbon and stainless steel extrusions. Engineered for large-scale civil projects, our structural profiles deliver the reliability and accuracy required for commercial environments.

  • Elevator sills and sill extensions
  • Handrails and architectural trim
  • Corrosion-resistant structural components

Carbon Steel Extruded Engineered Shapes

Carbon & Alloy Steel Grades 

1018
1029
1030
1035
1040 

1045
1050
1060
1215
4130 

4140
4150
4340
6150 

8620
8630
8640
9310 

A36
A588
A690
Grade 50
Grade 60

Industry Specifications 

AMS S6758
AMS 6415
AMS S5000 

ASTM A 36
ASTM A 105
ASTM A 322 

ASTM A 576
ASTM A 588
ASTM A 690 

AMS-S-6758A
AMS 6382

Outside Dimensions 

Shape cross-section must fit within 6” (152.4mm) diameter.

Stainless Steel Extruded Engineered Shapes

Stainless Steel Grades 

303
304 series
310
316 series 

400 series
418
422 

13-8 MO
15-5 PH
17-4 PH
17-7

Industry Specifications 

AMS 5610
AMS 5613
AMS 5616
AMS 5621
AMS 5627 

AMS 5629
AMS 5639
AMS 5640
AMS 5643
AMS 5645 

AMS 5646
AMS 5648
AMS 5651
AMS 5659
AMS QQS 763 

ASTM A 276
ASTM A 511

Outside Dimensions 

Shape cross-section must fit within 5.5” (139.7mm) diameter.

Downloads & Resources

FileLanguageSizeDownload
Extruded Engineered Shapes and Cold Drawn ShapesEN406 KB Download
Precision Cold Drawn Net Shapes BrochureEN256 KB Download
Elevator Sills SpecificationsEN199 KB Download

More than 100 Years of Innovation, Quality, and Custom Solutions

Request a Quote
Your Privacy Choices