Heavy Equipment Market

Heavy Equipment

Long-Term Product Performance and Reliability

Long-term product performance and reliability are critical factors for agricultural and construction OEMs. The high stress and impact on equipment in these industries demand Plymouth® mechanical and hydraulic tubing which meets the industry’s strictest testing requirements for industrial, agricultural and off-road construction use.

Tubing is available in cold drawn seamless, welded, or DOM in a variety of sizes and alloys that all carry the Plymouth® name.

Heavy Equipment Applications:

  • Hydraulic components such as fluid lines and fittings
  • Steering components
  • Transmission components
  • Off-highway vehicles
  • Bearings
  • Gears
  • Couplings and other connectors
  • Spacers
  • Sleeves
  • Hydraulic lifting
Heavy Equipment

Long-Term Product Performance and Reliability

Long-term product performance and reliability are critical factors for agricultural and construction OEMs. The high stress and impact on equipment in these industries demand Plymouth® mechanical and hydraulic tubing which meets the industry’s strictest testing requirements for industrial, agricultural and off-road construction use.

Tubing is available in cold drawn seamless, welded, or DOM in a variety of sizes and alloys that all carry the Plymouth® name.

Heavy Equipment Applications:

  • Hydraulic components such as fluid lines and fittings
  • Steering components
  • Transmission components
  • Off-highway vehicles
  • Bearings
  • Gears
  • Couplings and other connectors
  • Spacers
  • Sleeves
  • Hydraulic lifting

Plymouth® Heavy Equipment Products

Plymouth® delivers high-strength cold drawn seamless, welded, and DOM tubing engineered to exceed the rigorous demands of the heavy equipment industry. By fusing advanced metallurgical expertise with precision manufacturing, we provide the structural integrity and fatigue resistance essential for high-load construction, mining, and agricultural machinery. Whether integrating specialized hydraulic fluid lines or high-precision engineered profiles, our components ensure long-term reliability and peak operational performance in the world’s most challenging environments.

Carbon DOM Tubing

Power the continuous operation of heavy-duty machinery with Plymouth®’s carbon DOM tubing. We supply the agricultural and construction sectors with dimensionally precise, high-strength mechanical tubing capable of absorbing extreme shock loads and supporting highly pressurized hydraulic functions, including:

  • Hydraulic systems
  • Steering linkages
  • Safety structures

ASTM A513-5: Carbon DOM Tubing Specifications

MeasurementInches/FeetMetric

OD Range

0.250” – 1.8750”

6.35mm – 47.63mm

Wall Range

0.025” – 0.125”

0.635mm – 3.175mm

Maximum Length

26’

7.9 m

Industry Specifications

  • Carbon Grades: 1010 – 1020

Cold Drawn Seamless Steel Tubing

Our cold drawn seamless tubing is engineered to withstand high-stress impacts to power the continuous operation of heavy-duty machinery. Our seamless steel tubes provide the mechanical durability required to maximize the lifecycle of critical industrial, agricultural, and construction components:

  • Fluid lines and fittings
  • Off-highway vehicle components
  • Bearings
  • Gears
  • Spacers
  • Hydraulic lifting components

ASTM A519: Cold Drawn Seamless Carbon & Alloy Steel Tubing Specifications

MeasurementInches/FeetMetric

OD Range

0.250” – 2”

6.35mm – 50.8mm

Wall Range

0.025” – 0.187”

0.635mm – 4.75mm

Maximum Length

26’

7.9m

Industry Specifications

  • Carbon Grades: 1010 – 1018
  • Alloy Grades: 4130, 4140

ProMoly® Seamless 4130 Steel Tubing Specifications

MeasurementInches/FeetMetric

OD Range

0.250” – 2.000” 

6.35mm – 50.8mm

Minimum OD Tolerance 

+/- 0.005” (up to 1.500” OD) 

+/- 0.127mm (up to 38.1mm)

Maximum OD Tolerance

+/- 0.10” (above 1.500” OD)

+/- 2.54mm (above 38.1mm)

Wall Range 

0.025” – 0.187” 

0.635mm – 4.75mm

Minimum Wall Tolerance 

+/- 10% (For IDs over 0.500”)

+/- 10% (For IDs over 12.7mm)

Maximum Wall Tolerance 

+/- 15% (for IDs under 0.500”) 

+/- 15% (for IDs under 12.7mm)

Maximum Length 

26’

7.9m

Industry Specifications and Certifications

  • Grade: 4130
  • Industry Specifications: AMS-T-6736A | AMS-6371 | AMS-6360 | MIL-T-6736B
  • Certifications: ISO 9001

Cold Drawn Shapes

Drive manufacturing efficiency and rugged performance in the heavy machinery sector with Plymouth® cold drawn shapes. Our profiles deliver the dimensional accuracy required for streamlined assembly while guaranteeing reliable field operation in extreme conditions for mining, construction, and agricultural applications:

  • Hydraulic cylinder segments
  • Linear guide rail systems
  • Telescoping pad systems
  • Industrial shaft components
  • Agricultural attachments

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

Engineered for high-stress industrial environments, Plymouth®’s carbon and stainless steel extrusions deliver consistent mechanical strength to maximize the lifecycle of construction for heavy-duty mining and agricultural components:

  • Hydraulic cylinder mounts
  • Track and rail frame components
  • Telescoping boom structures
  • Agricultural attachment systems

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
Plymouth® Product CatalogEN4 MB Download
Balancing High Strength Tubing Selection and Cost in Hydraulic System DesignEN764 KB Download
HS-50® Tubing Sell SheetEN539 KB Download
VideoWatch
Drawn Over Mandrel Steel Tubing Watch
Fabricating, Bending, Welding, 4130 Tubing Watch
Specifying ProMoly® is a Seamless Decision Watch
Eupora DOM Process Watch
Why Seamless Carbon and Alloy Steel Tubing? Watch
Carbon and Alloy Boiler Tube Grades Watch
Trust the PROs – Welding Tips from the Experts Watch
Specify ProMoly® for your 4130 Tubing needs! Watch
ProMoly® 4130 Cold Drawn Seamless Tubing Watch
Plymouth® – Tubing and Shapes You Can Trust Watch
Plymouth Engineered Shapes at Plymouth® | Manufacturing Capabilities & Facility Overview Watch
Eupora and FTS at Plymouth® | Manufacturing Capabilities & Facility Overview Watch

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