Cold drawn welded tubes according to DIN EN 10305-2 are widely used in precision mechanical engineering, telescopic cylinders, hydraulic cylinders, automotive components, and industrial equipment manufacturing. These cold drawn welded tubes are designed for applications requiring high dimensional accuracy, improved surface quality, and consistent mechanical performance.
DIN EN 10305-2 cold drawn welded tubes are manufactured through cold drawing processes after welding, which significantly improves tolerance control, roundness, straightness, and mechanical strength. These features make DIN EN 10305-2 cold drawn welded tubes particularly suitable for telescopic cylinders, hydraulic cylinder barrels, mechanical components, and engineering applications.
As a professional precision tube manufacturer, Womic Steel supplies cold drawn welded tubes according to DIN EN 10305-2 in multiple material grades, with diameter range up to 350mm and tight tolerance control for global hydraulic cylinder and mechanical equipment manufacturers.
Overview of DIN EN 10305-2 Standard
DIN EN 10305-2 specifies cold drawn welded precision steel tubes for mechanical and hydraulic applications. The standard focuses on dimensional accuracy, surface quality, mechanical properties, and material consistency.
DIN EN 10305-2 cold drawn welded tubes are widely used in:
Telescopic cylinders
Hydraulic cylinders
Automotive components
Mechanical engineering
Construction machinery
Industrial equipment
The DIN EN 10305-2 standard defines:
Chemical composition requirements
Mechanical properties
Tolerance requirements
Surface condition
Testing requirements
Heat treatment conditions
Cold drawn welded tubes produced according to DIN EN 10305-2 provide reliable performance in demanding industrial applications.
DIN EN 10305-2 Material Grades
DIN EN 10305-2 includes multiple steel grades suitable for different engineering applications.
Common material grades under DIN EN 10305-2 include:
|
Steel Grade |
Yield Strength |
Application |
| E155 | Low strength | General mechanical use |
| E195 | Medium strength | Mechanical components |
| E220 | Improved strength | Structural components |
| E235 | Standard structural | Machinery and equipment |
| E275 | Higher strength | Engineering applications |
| E355 | High strength | Hydraulic cylinders |
| E420 | High strength | Heavy equipment |
| E460 | Very high strength | Telescopic cylinders |
Among these grades, E355, E420, and E460 are most commonly used for hydraulic cylinders and telescopic cylinders.
Chemical Composition of DIN EN 10305-2 Steel Grades
Typical chemical composition of DIN EN 10305-2 materials:
|
Grade |
C Max |
Mn Max |
Si Max |
P Max |
S Max |
| E155 | 0.17 | 1.20 | 0.35 | 0.025 | 0.025 |
| E195 | 0.20 | 1.40 | 0.40 | 0.025 | 0.025 |
| E235 | 0.22 | 1.60 | 0.55 | 0.025 | 0.025 |
| E275 | 0.24 | 1.60 | 0.55 | 0.025 | 0.025 |
| E355 | 0.22 | 1.60 | 0.55 | 0.025 | 0.025 |
| E420 | 0.22 | 1.70 | 0.60 | 0.025 | 0.025 |
| E460 | 0.22 | 1.70 | 0.60 | 0.025 | 0.025 |
These chemical compositions ensure excellent weldability and mechanical performance for cold drawn welded tubes.
Mechanical Properties of DIN EN 10305-2 Cold Drawn Welded Tubes
Mechanical properties vary depending on steel grade.
|
Grade |
Yield Strength |
Tensile Strength |
Elongation |
| E155 | ≥155 MPa | 290-430 MPa | ≥28% |
| E195 | ≥195 MPa | 320-460 MPa | ≥25% |
| E235 | ≥235 MPa | 340-480 MPa | ≥25% |
| E275 | ≥275 MPa | 410-560 MPa | ≥21% |
| E355 | ≥355 MPa | 490-630 MPa | ≥20% |
| E420 | ≥420 MPa | 520-680 MPa | ≥19% |
| E460 | ≥460 MPa | 550-720 MPa | ≥17% |
Higher grades such as E355, E420, and E460 are commonly used for telescopic cylinders and hydraulic cylinder manufacturing.
Delivery Conditions Under DIN EN 10305-2
DIN EN 10305-2 includes several delivery conditions:
+SR Stress relieved cold drawn
+N Normalized
+A Annealed
+CR Cold drawn
Among these, +SR condition is most widely used for telescopic cylinders and hydraulic cylinders.
Cold drawn welded tube +SR features:
Improved dimensional stability
Reduced residual stress
Better machinability
Consistent mechanical performance
Manufacturing Process of Cold Drawn Welded Tube DIN EN 10305-2
Cold drawn welded tube manufacturing involves several precise production steps.
Raw Material Selection
High quality steel coils are selected according to DIN EN 10305-2 requirements.
Tube Forming
Steel strips are formed into tubes using high frequency welding technology.
Weld Seam Control
Weld seam is monitored and controlled for strength and uniformity.
Cold Drawing Process
Cold drawing improves:
Roundness
Straightness
Tolerance control
Surface finish
Cold drawn welded tubes achieve superior dimensional accuracy.
Stress Relieving
Stress relieving reduces internal stress and improves tube stability.
Size Range of DIN EN 10305-2 Cold Drawn Welded Tubes
Womic Steel supplies cold drawn welded tubes according to DIN EN 10305-2 in wide size ranges.
Production Range:
Outer Diameter: 20mm — 350mm
Wall Thickness: 2mm — 40mm
Length: Up to 12 meters
Custom Length Available
Large diameter cold drawn welded tubes up to 350mm are widely used in telescopic cylinders and heavy hydraulic cylinders.
Tolerance Control of Cold Drawn Welded Tube DIN EN 10305-2
Cold drawn welded tubes offer tight dimensional tolerance.
Typical tolerances:
OD Tolerance: ±0.5%
Wall Thickness: ±7.5%
Straightness: Controlled
Ovality: Controlled
Tight tolerance improves cylinder sealing performance.
Surface Condition
Cold drawn welded tubes provide high quality surface finish.
Surface options:
Cold drawn surface
Pickled surface
Oiled surface
Shot blasted surface
Smooth surface improves machining and coating performance.
Applications of DIN EN 10305-2 Cold Drawn Welded Tubes
Cold drawn welded tubes according to DIN EN 10305-2 are widely used in:
Telescopic cylinders
Hydraulic cylinders
Construction machinery
Mining equipment
Agricultural machinery
Automotive components
Mechanical engineering
Cold drawn welded tubes are essential components in hydraulic and mechanical systems.
Inspection and Testing
Inspection includes:
Chemical composition testing
Mechanical property testing
Dimensional inspection
Ultrasonic testing
Visual inspection
Hardness testing (HBW)
Inspection reports provided with shipment.
Packaging and Transportation
Packaging methods include:
Steel band bundling
Plastic caps
Waterproof wrapping
Wooden box packaging
Packaging ensures safe transport and corrosion protection.
Womic Steel Cold Drawn Welded Tube Capability
Womic Steel supplies:
Cold drawn welded tube DIN EN 10305-2
E355 cold drawn welded tube
E420 cold drawn welded tube
E460 cold drawn welded tube
Telescopic cylinder tubes
Hydraulic cylinder tubes
Large diameter production up to 350mm available.
Conclusion
Cold drawn welded tubes according to DIN EN 10305-2 provide excellent dimensional accuracy, high strength, and superior surface quality. Multiple material grades including E155, E195, E235, E355, E420, and E460 offer flexibility for different engineering applications.
Womic Steel manufactures cold drawn welded tubes with tight tolerance, large diameter capacity, and reliable delivery for global customers.
About Womic Steel
Womic Steel is a professional manufacturer of cold drawn welded tubes, seamless pipes, pipe fittings, flanges, and industrial fabrication products. Our DIN EN 10305-2 cold drawn welded tubes are widely used in telescopic cylinders, hydraulic cylinders, and heavy machinery worldwide.
Website: www.womicsteel.com
Email: sales@womicsteel.com
Tel/WhatsApp/WeChat:
Victor: +86-15575100681
Jack: +86-18390957568
Post time: May-25-2026