EN10305 E215 Cold Rolled Precision Steel Tube for Lightweight Structural

Product Specification

EN10305 E215 Precision Steel Tube Cold Rolled ERW Carbon Steel Tubing for General Machinery & Lightweight Structural Components

Description

The EN10305 E215 precision steel tube is a cost-effective cold rolled ERW carbon steel tubing specifically designed for general machinery manufacturing and lightweight structural components. Manufactured in accordance with European standard EN10305, this precision tube offers excellent formability, good weldability, and consistent dimensional accuracy at an economical price point.

Material Grade and Properties

Material Grade and Properties

The E215 steel grade (1.0033) provides a balanced combination of mechanical properties suitable for non-critical structural and mechanical applications. With a minimum yield strength of 215 MPa and tensile strength ranging from 270 to 410 MPa, this tubing delivers adequate strength for light to medium load requirements. The low carbon content (max 0.11%) is significantly lower than E235 and E355 grades, resulting in superior ductility and formability. The tightly controlled chemical composition—manganese max 0.70%, phosphorus and sulfur each limited to 0.025%—ensures consistent welding performance and excellent cold forming characteristics.

Condition of seamless cold drawn mechanical tubing

BK (+C) Cold finished/hard (cold finished as drawn).

BKW (+LC) Cold finished/soft

BKS (+SR) Cold finished/stress relieve annealed.

GBK (+A) Annealed.

NBK (+N) Normalized.

Automotive Applications

Fuel Injection Systems: The smooth internal surface and precise dimensional accuracy ensure consistent fuel flow and proper sealing within injector assemblies. The high pressure resistance of E355 grade withstands the demanding operating conditions of modern fuel injection systems.

Shock Absorber Components: The excellent concentricity and uniform wall thickness provide reliable damping performance and extended service life. The superior surface finish reduces friction between moving parts, enhancing ride comfort and component durability.

Process

These precision tubes are produced from cold rolled carbon steel strips through electric resistance welding, followed by cold drawing over a mandrel (DOM). This manufacturing sequence eliminates internal weld beads, achieves tight dimensional tolerances, and produces a smooth, uniform surface finish. The cold drawing process refines the grain structure and improves concentricity, resulting in a tube that performs reliably in various mechanical applications.

General Machinery Applications

The E215 precision steel tube is widely utilized across multiple general machinery sectors:

1.Machine Frames and Supports: Lightweight structural frames for packaging machines, textile machinery, and printing equipment

2.Guide Rails and Rollers: Non-critical guide rails, conveyor rollers, and material handling components

3.Protective Guards and Covers: Machine safety guards, cable protection tubes, and equipment enclosures

4.Structural Tubing: Support structures for industrial workstations, assembly benches, and material handling equipment

5.Machine Bases: Base frames for light-duty industrial machinery and automation equipment

Lightweight Structural Components

The excellent formability of E215 makes it ideal for various structural applications:

1.Furniture Components: Industrial workbench frames, storage rack systems, and laboratory equipment stands

2.Exhibition and Display Structures: Modular display frames, signage supports, and trade show booth structures

3.Agricultural Equipment: Lightweight frames for agricultural implements, trailer components, and farm equipment supports

4.Construction Applications: Scaffolding tubes, temporary support structures, and concrete formwork components