Cold drawn welded tube E460+SR according to DIN EN 10305-2 is widely used in telescopic cylinders, hydraulic cylinders, heavy machinery, lifting equipment, and precision mechanical applications. These cold drawn welded tubes provide excellent dimensional accuracy, high strength, and superior surface quality, making them ideal for telescopic cylinder manufacturing and high-performance hydraulic systems.
Cold drawn welded tube E460+SR has become one of the most preferred materials for telescopic cylinders due to its excellent mechanical properties, controlled tolerances, and reliable weld quality. Compared with hot-rolled tubes or standard welded pipes, cold drawn welded tube E460+SR provides superior roundness, straightness, and dimensional precision, which are critical for telescopic cylinder performance.
As a professional manufacturer, Womic Steel supplies cold drawn welded tube E460+SR according to DIN EN 10305-2 with outer diameter up to 350mm, strict tolerance control, and customized production solutions for global hydraulic cylinder manufacturers and telescopic cylinder producers.
What is Cold Drawn Welded Tube E460+SR According to DIN EN 10305-2
Cold drawn welded tube E460+SR is a precision welded steel tube manufactured according to DIN EN 10305-2 standard. The tubes are produced using cold drawing processes to improve dimensional accuracy, surface finish, and mechanical properties after high-frequency welding (HFW).
Key features of cold drawn welded tube E460+SR:
l High dimensional accuracy (tight OD/ID tolerances)
l Excellent surface finish (ideal for honing and skiving)
l Improved mechanical strength (yield strength ≥460 MPa)
l Uniform wall thickness (reduces material waste)
l Excellent weld seam quality (ultrasonic tested)
l Stress relieved condition (+SR) for dimensional stability
These properties make cold drawn welded tube E460+SR ideal for telescopic cylinders, hydraulic cylinder barrels, mechanical structures, and engineering applications.
DIN EN 10305-2 standard covers precision cold drawn welded steel tubes for mechanical and hydraulic purposes. The E460+SR material grade indicates high yield strength and stress relieved condition after cold drawing.
DIN EN 10305-2 Standard Overview
DIN EN 10305-2 specifies cold drawn welded precision tubes used in mechanical and hydraulic applications.
Key requirements of DIN EN 10305-2 include:
Chemical composition limits (C, Si, Mn, P, S)
Mechanical property requirements (yield, tensile, elongation)
Dimensional tolerances (OD, ID, wall thickness, straightness)
Surface condition requirements (roughness, defects)
Heat treatment conditions (+SR stress relieving)
Testing and inspection procedures (UT, ET, hardness, tensile)
Cold drawn welded tube E460+SR under DIN EN 10305-2 ensures high performance and reliable service life in demanding hydraulic cylinder applications.
Chemical Composition of Cold Drawn Welded Tube E460+SR
The chemical composition of cold drawn welded tube E460+SR ensures high strength, good weldability, and consistent hardenability.
Typical Chemical Composition (DIN EN 10305-2 E460)
| Element | Composition (%) |
| Carbon (C) | ≤ 0.22 |
| Silicon (Si) | ≤ 0.55 |
| Manganese (Mn) | ≤ 1.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
The controlled chemical composition allows cold drawn welded tube E460+SR to achieve excellent mechanical strength, low carbon equivalent (CEV) , and stable performance in telescopic cylinder manufacturing.
Mechanical Properties of Cold Drawn Welded Tube E460+SR
Cold drawn welded tube E460+SR offers high strength and reliable mechanical performance under cyclic hydraulic pressure.
Typical Mechanical Properties
| Property | Value |
| Yield Strength (ReH) | ≥ 460 MPa |
| Tensile Strength (Rm) | 550 – 720 MPa |
| Elongation (A) | ≥ 17% |
| Hardness (HBW) | Controlled as per standard |
These mechanical properties make cold drawn welded tube E460+SR suitable for telescopic cylinders, hydraulic cylinder tubes, heavy equipment structures, and mobile hydraulics.
Cold Drawn Welded Tube E460+SR Size Range
Womic Steel manufactures cold drawn welded tube E460+SR in a wide size range to meet different hydraulic cylinder requirements.
Production Size Range:
l Outer Diameter (OD): 30mm – 350mm
l Wall Thickness: 3mm – 40mm
l Length: Up to 12 meters (longer on request)
l Customized Length: Available upon request
l Inner Diameter (ID) tolerance: H8, H9, H10 optional
Cold drawn welded tube E460+SR with large diameter up to 350mm is widely used in large telescopic cylinders, heavy-duty hydraulic equipment, and mining machinery cylinders.
Manufacturing Process of Cold Drawn Welded Tube E460+SR
Cold drawn welded tube E460+SR is produced using advanced manufacturing technology to ensure dimensional precision and mechanical strength.
Steel Strip Preparation
High quality hot rolled steel coil is selected according to DIN EN 10305-2 chemical and mechanical requirements.
Tube Forming
Steel strip is formed into tube shape using high frequency welding (HFW) equipment with inline seam annealing.
Weld Seam Control
The weld seam is precisely controlled via online ultrasonic testing to ensure strength and uniformity comparable to base metal.
Cold Drawing Process
Cold drawing improves:
Roundness (ovality control)
Straightness (≤0.5mm/m)
Surface finish (Ra ≤0.4μm)
Mechanical properties (work hardening + subsequent stress relief)
Stress Relieving (+SR Condition)
The +SR condition indicates stress relieved after cold drawing (typically 550–650°C).
This process:
l Reduces internal residual stress
l Improves dimensional stability during machining
l Maintains high yield strength
Tolerance Control of Cold Drawn Welded Tube E460+SR
Cold drawn welded tube E460+SR offers tight tolerance control required for telescopic cylinders and precision hydraulic applications.
Typical Tolerance Range (per DIN EN 10305-2):
| Parameter | Tolerance Value |
| Outer Diameter Tolerance | ±0.5% or better |
| Wall Thickness Tolerance | ±7.5% (often ±5%) |
| Straightness | ≤0.5mm per meter |
| Ovality | ≤50% of OD tolerance |
Tight tolerance ensures:
l Smooth piston movement
l Reliable seal performance
l Reduced machining stock
l Consistent cylinder wall thickness
Surface Quality of Cold Drawn Welded Tube E460+SR
Cold drawn welded tube E460+SR provides excellent surface quality suitable for direct honing or skiving and roller burnishing (SRB) .
Surface condition options include:
l Cold drawn surface (as-drawn, bright)
l Oiled surface (anti-rust)
l Pickled surface (oxide-free)
l Shot blasted surface (for painting/adhesive)
High quality surface finish (Ra ≤0.4μm typical) improves:
Machining performance
Coating adhesion
Fatigue life of hydraulic cylinders
Applications of Cold Drawn Welded Tube E460+SR
Cold drawn welded tube E460+SR is widely used in multiple industrial applications.
Telescopic Cylinders
Cold drawn welded tube E460+SR is the preferred material for telescopic cylinder manufacturing.
Applications include:
l Dump trucks (tipper cylinders)
l Hydraulic lifting equipment
l Construction machinery (backhoes, loaders)
l Agricultural equipment (balers, loaders)
Telescopic cylinder manufacturers prefer cold drawn welded tube E460+SR for its high strength-to-weight ratio and precision.
Hydraulic Cylinders
Cold drawn welded tube E460+SR is ideal for hydraulic cylinder barrels.
Applications include:
l Excavators (boom, arm, bucket cylinders)
l Loaders (lift, tilt cylinders)
l Cranes (outrigger, telescopic boom cylinders)
l Mining machinery (shield support cylinders)
Precision cold drawn welded tube ensures smooth piston movement and leak-free sealing.
Mechanical Engineering
Cold drawn welded tube E460+SR is used in:
l Heavy machinery frames
l Structural components (supports, columns)
l Engineering equipment (aerial work platforms)
Automotive and Heavy Equipment
Cold drawn welded tube E460+SR is also used in:
l Truck chassis (stabilizers, axles)
l Hydraulic systems (power take-off)
l Industrial vehicles (forklift masts)
Inspection and Testing
Cold drawn welded tube E460+SR undergoes strict inspection procedures at every production stage.
Inspection includes:
l Chemical composition testing (optical emission spectrometry)
l Mechanical property testing (tensile, yield, elongation)
l Dimensional inspection (OD, ID, WT, straightness, ovality)
l Ultrasonic testing (UT) for weld seam and base metal
l Eddy current testing (ET) (optional)
l Visual inspection (surface defects)
l Hardness testing (HBW or HRB)
Inspection reports (EN 10204 Type 3.1 or 3.2) are provided with each shipment.
Packaging and Transportation
Cold drawn welded tube E460+SR is packaged carefully to prevent damage during transportation and storage.
Packaging methods include:
l Steel band bundling (secure stacking)
l Plastic caps protection (end protection)
l Waterproof packaging (VCI paper or shrink wrap)
l Wooden case packaging (optional for export)
l Proper packaging ensures safe delivery to global customers.
Womic Steel Cold Drawn Welded Tube Manufacturing Capability
Womic Steel supplies:
l Cold drawn welded tube E460+SR
l DIN EN 10305-2 precision tubes
l Telescopic cylinder tubes
l Hydraulic cylinder tubes
l Large diameter cold drawn welded tube up to 350mm
l Customized OD/ID combinations
l Cut-to-length service
l End finishing (chamfering, deburring)
With advanced cold drawing equipment and strict quality control, Womic Steel provides reliable precision tube solutions.
Advantages of Womic Steel Cold Drawn Welded Tube
l Large diameter production up to 350mm OD
l Tight tolerance control (exceeds standard requirements)
l Excellent surface quality (Ra ≤1.6μm)
l Stable mechanical properties (batch-to-batch consistency)
l Fast delivery capability (stock sizes available)
l +SR stress relieved condition for dimensional stability
l Ultrasonic tested weld seam
l Customized lengths without extra cost
Womic Steel provides customized production according to customer drawings or technical specifications.
Conclusion
Cold drawn welded tube E460+SR according to DIN EN 10305-2 is an ideal material for telescopic cylinders and hydraulic applications. With high strength, tight tolerance, and excellent surface quality, cold drawn welded tube E460+SR ensures reliable performance in demanding industrial environments.
Womic Steel manufactures cold drawn welded tube E460+SR with advanced production technology, strict inspection, and customized solutions for global customers in the hydraulic cylinder and heavy equipment industry.
About Womic Steel
Womic Steel is a professional manufacturer of steel pipes, precision tubes, pipe fittings, flanges, and industrial fabrication products. Our cold drawn welded tube E460+SR according to DIN EN 10305-2 is widely used in telescopic cylinders, hydraulic cylinders, heavy machinery, and engineering equipment worldwide.
Website: www.womicsteel.com
Email: sales@womicsteel.com
Tel/WhatsApp/WeChat:
Victor: +86-15575100681
Jack: +86-18390957568
Post time: Apr-20-2026