High-Precision ST52 Hydraulic Cylinder Barrel Manufacturer
The hydraulic cylinder barrel serves as the critical body of any fluid power system, containing immense pressure and guiding the piston. Our ST52 hydraulic cylinder barrels are engineered from premium precision steel tubes, specifically chosen for their superior tensile strength, excellent weldability, and impact resistance.
In global industrial standards, the German grade ST52 (DIN 2391) is functionally equivalent to the European standard E355 (EN 10305-1). Whether your blueprints require an ST52 or E355 cylinder barrel, our factory guarantees strict compliance with both chemical composition and mechanical property requirements.
Product Specifications
| Parameter | Details |
|---|
| Commodity | Machined & Honed Hydraulic Cylinder Barrel |
| Core Material Grade | ST52, ST52.3, ST52.4 / EN E355 |
| Internal Diameter (ID) Range | 40 mm – 300 mm |
| Tolerance Standards | Strict H8 ID tolerance (or customized per drawing) |
Our Complete Manufacturing Procedure
We don't just supply tubes; we provide ready-to-assemble cylinder barrels through a stringent manufacturing process:
Cold Drawing: Utilizing high-quality raw materials to achieve precise baseline dimensions and enhance yield strength.
ID Honing (or Skiving & Roller Burnishing): Processing the inner bore to an ultra-smooth finish (Ra ≤ 0.25 μm) to eliminate seal friction and extend cylinder life.
OD Turning: CNC machining the outer diameter to ensure perfect concentricity and wall thickness uniformity.
Welding & Finishing: Custom welding (e.g., end caps, ports) and threading exactly as required by your cylinder design.
Delivery Conditions Available
| EN 10305 Code | DIN 2391 Code | Treatment Status |
|---|
| +C | BK | Cold Drawn / Hard |
| +LC | BKW | Cold Drawn / Soft |
| +SR | BKS | Cold Drawn & Stress Relieved |
| +A | GBK | Annealed |
| +N | NBK | Normalized |
* Need a different grade? While this page focuses on our premium ST52 hydraulic cylinder barrels, we also manufacture barrels in SAE 1026, 4140, E470, and 20MnV6. Send us your technical drawings for a precise factory quote.
