Mechanical Steel Tube
Acree offers a wide range of precision mechanical steel tubes including honed tubes
- Automobile Steel Tubes
- Cylinder Steel Tubes
- Bearing Tubes
- Bushing Tubes
- Introduction
- Size Range
- More Applications
Cold Drawn Seamless (CDS) Tubes: Superior Precision and Performance
Our Cold Drawn Seamless (CDS) tubes are manufactured in compliance with ASTM A519 and equivalent standards, utilizing high-quality carbon steels such as 1010, 1020, 1026, 1035, and 1045, as well as alloy grades like SAE 4130 and 4140. Compared to hot-finished seamless tubes, CDS tubes deliver superior dimensional tolerances, enhanced surface finishes, and improved mechanical properties.
Key Characteristics
- Cold-Worked Precision: Produced with strict control over OD and wall thickness. For applications requiring precise internal dimensions, tubing can be tailored to meet ID specifications.
- High-Strength and Light weight: Designed to provide an exceptional strength-to-weight ratio, ideal for demanding applications.
- Versatile Performance: Features dimensional accuracy, uniform microstructure, excellent machinability, and high tensile strength.
Applications
Our CDS tubes are extensively used in industries requiring precision and durability, such as:
- Bushings and Spacers
- Bearings and mechanical parts in automobiles, aircraft, and drilling equipment
- Hydraulic Cylinders
- Automotive tubular parts
Standards and Grades
- Standards: ASTM A519, DIN 2391, EN 10305
- Steel Grades:
- Carbon Steels: 1008, 1010, 1017, 1020, 1026, 1035, 1040, 1045
- Alloy Steels: 4130, 4140
- European Grades: ST 52.3, ST37.4, E255, E355
Heat Treatment Options
Available final heat treatments include:
- NBK (+N): Normalized
- GBK (+A): Annealed
- BK (+C): Hard Drawn
- BKW (+LC): Lightly Cold Worked
- BKS (+SR): Stress Relieved
- Custom treatments are available upon request.
For precision applications, we also recommend Cold Drawn Welded Tubes (DOM), offering additional advantages in terms of uniformity and precision.
Mechanical tube sizes
| OUTER DIAMETER (OD) | 6 – 400mm |
| WALL THICKNESS (WT) | 1 – 40mm |
While ordering, it is necessary to agree upon the method and means of temporarily protecting the surface of the tubes during transportation and storage.
The tubes may be supplied without temporarily preservation of the surface or with an agreed upon. preservative.
APPLICATIONS BY INDUSTRY:
1. CONSTRUCTION & HEAVY EQUIPMENT
Augers
Chassis
Crane Boom Lacings
Cylinders
Hydraulics
Shafts
Struts
Transmission Shafts
2.AGRICULTURE
Hydraulic Cylinders
Machinery Frames & Cages
Augers
Booms
Chassis
Shafts
Spacers
Bushings
3.INFRASTRUCTURE
Columns
Rollers
Lift Components
FLUID HANDLING
Engine Assemblies
Pumps
Other Components Which Liquids Will Flow (Especially at High Speeds)
4.MACHINERY
Numerous Internal Machine Components
Pumps
Hydraulic Components
Frames
Industrial Lift Components
Tool Extensions
5.OIL & GAS
Pumps
Barrels
Plungers
Bearing Races
6.ENERGY
Bearings
Waste Treatment
Wind Turbine Components
Nuclear, Wind, Solar, Gas, and Coal Plant Applications
7.GENERAL FABRICATION AND MACHINING
8.AUTOMOTIVE & TRANSPORTATION
Mechanical Tubing Applications and Characteristics
Mechanical tubing is widely used in both mechanical and lightweight structural applications. It is engineered to meet specific end-use requirements, including exacting tolerances, chemical compositions, and tailored specifications. This precise manufacturing process ensures greater uniformity of properties throughout the tubing compared to standard pipe or general-purpose tubing.
While mechanical tubing can be produced to standard specifications when requested, it is often designed to achieve “typical” properties, prioritizing characteristics such as yield strength for a given size and wall thickness. In certain applications requiring severe forming, yield strength may not be explicitly specified. Instead, the tubing is manufactured to be “suitable for use,” ensuring versatility and adaptability.
Mechanical tubing serves a wide range of structural and non-structural applications, making it an essential component in industries that demand precision and reliability.
What We Can Provide
Hot rolled carbon steel tubes are not subjected to additional heat treatment after production. Their condition is equivalent to that of tubes in a normalized (annealed) state, making them suitable for applications that do not require further refinement.
In contrast, cold drawn tubes undergo heat treatment following the forming process. This treatment ensures that the tubes meet the relevant standards for delivery condition and mechanical properties, such as strength and ductility.
The surface finish of both the inner and outer tube corresponds to the specific manufacturing process, providing a consistent quality that aligns with industry requirements.
Tube Straightness:1 x 1000 is the required straightness for the tubes that have diameter up to 76.2 mm and which are intended for machine components.For tubes that are going to be mechanically machined the required straightness is 1: 500.
Certified test reports are issued according to the appropriate TDC standards:EN 10204 for EN 10294-1:certificate 3.1.B
Manufacturing Process
During cold-drawn seamless tube manufacturing,the origin,content and quality of the raw material,namely the main finished tube,are as important as the technical competence and expertise of the manufacturer,the cleanliness of the machine lines and the calibration of the measuring devices.
The main tube first go through surface preparation cleaning to remove scale and incrustations from their surfaces,and bath and tube end preparation processes,then the cold-drawn processes are carried out with the following manufacturing stages.This process can be repeated with multiple drawns to reach the desired technical features and specified lengths.If necessary,the tubes are subjected to another heat treatment after production or during the production stages.This process is especially important in fully automatic integrated machines to achieve the desired quality.Then the tubes are cut and the process is completed.
In the final stage of production,the tubes are subjected to the necessary controls and tests,and are prepared for shipment by being coated with protective oil and capped at both ends,preferably with hexagonal ties not exceeding 2 tons,and with durable products such as ribbon wires to prevent damage to the tube surface,according to customer demands and requests.
Related Products
Yes,From steelmaking to tube-rolling, cold-drawing, heat treatment, and tubular parts processing, our fully-integrated manufacturing process ensures precision and quality at every step. We specialize in designing tailor-made products that meet our customers’ unique requirements, enhancing product durability and optimizing operational efficiency.
By leveraging advanced technologies and expertise, we deliver solutions that not only meet but exceed expectations, ensuring long-lasting performance in the most demanding applications.