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Help CenterPrecision Seamless Steel Tube E355 Cold Drawn Honed Tube for Hydraulic Cylinder Barrel
Product Spotlights
Bright inner & outer surface, no oxide scale, ideal for plating, painting and honing.
Seamless construction, uniform metal structure, reliable high-pressure resistance.
Consistent wall thickness, straightness ≤0.5mm/m, stable mechanical properties.
Multiple grades (20#,45#,E235,E355,ST35,ST52), meets EN10305, DIN2391, ASTM A519.
Custom cutting, deburring, chamfering; honing available upon request.
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Product Overview
Precision seamless steel tube is produced by cold drawing or cold rolling process. It features high dimensional accuracy, smooth inner and outer surface, uniform wall thickness without welding seam. Widely used in hydraulic cylinder, pneumatic cylinder, machinery manufacturing, automotive and engineering equipment.
Core Selling Points
High dimensional precision, tolerance ±0.02~0.05mm, less machining allowance to save processing cost.
Seamless structure, excellent mechanical property and high pressure resistance, no leakage risk.
Bright smooth surface, free of oxide scale, suitable for honing, painting and plating.
Uniform wall thickness and good straightness ≤0.5mm/m, convenient for assembly.
Multiple steel grades available: 20#,45#,E235,E355,ST52 etc.
Strict inspection before delivery: hydrostatic test, eddy current test, ultrasonic test optional.
Custom processing: fixed cutting, deburring, chamfering, honing service available.
Complete material test certificate 3.1 MTC provided.
Product Attributes
| Property | Content |
|---|---|
| Product Name | Precision Seamless Steel Tube |
| Process | Cold Drawn / Cold Rolled |
| Material | Carbon Steel |
| Grades | 20#, 45#, E235, E355, ST52 |
| Standard | EN10305, DIN2391, ASTM A108, GB/T3639 |
| Tolerance | ±0.02~0.05 mm |
| Surface | Bright Finish |
| Straightness | ≤0.5mm/m |
| OD & ID | Customized |
| Length | Custom Cut |
| Processing | Deburring, Chamfering, Honing |
| Certificate | 3.1 Material Test Certificate |
| Inspection | Eddy Current, Ultrasonic, Hydrostatic Test (Optional) |
| Application | Hydraulic cylinder, pneumatic cylinder, precision machinery, auto parts, engineering equipment |
| Supply | Factory direct, in stock |
Applications
Hydraulic cylinder tubes, pneumatic cylinder tubes, precision mechanical parts, automotive components, engineering machinery, instrument equipment.
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