EN10305-2 E355 Cold Drawn Electrolytic Zinc Welded Steel Tube Round Steel Tubing
With high dimension accuracy and fine surface quality, cold drawn precision steel tubing is ideal for hydraulic and pneumatic systems. Both seamless and welded cold drawn tubes are used for cylinders with smooth surfaces. BS EN 10305-2 grade E355 is specifically designed for precision applications and serves as an excellent material for barrels and cylinders.
| Steel Grade | Steel Number | C max | Si max | Mn | P max | S max | Al min |
|---|---|---|---|---|---|---|---|
| E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - |
| E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
Produced by cold drawing over mandrel and die on ERW welded steel tube to achieve superior tolerance and excellent concentricity. Both outside and inside weld seams are completely removed during the cold drawing process.
Material: E355
Alternative Material: E235
Standard: EN10305-2
Technique: Cold Drawn
Outside Diameter: 6-80 mm
Wall Thickness: 0.5-10 mm
+C: No heat treatment after final cold drawing process
+LC: Suitable drawing pass after final heat treatment
+SR: Stress relieve heat treatment in controlled atmosphere after final cold drawing
+A: Annealed in controlled atmosphere after final cold drawing
+N: Normalized in controlled atmosphere after final cold drawing operation
- Superior shape and form
- Enhanced surface quality
- Tight eccentricity and wall thickness tolerances
- Excellent toughness at low temperatures
- 90% of cylinders in USA market use welded tubes
- Cost-effective fixed lengths
High precision steel tubes are widely used in:
- Bearings
- Military applications
- Automobile components (bushings, sleeves, fuel tanks)
- Various industrial applications
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