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The cylinder barrel is the main body of the hydraulic cylinder, and its inner hole is generally manufactured by precision machining processes such as boring, reaming, rolling or honing, so that the piston and its seals and supporting parts can slide smoothly, thus ensuring the sealing effect and reducing wear; The cylinder barrel must bear a large hydraulic pressure, so it needs to have sufficient strength and stiffness.
| Speci -cation | Grade | Chemical Composition [%] | ||||||||||||||
| C | Mn | P | S | Si | Cr | Mo | Cu | Ni | V | |||||||
| Min | Max. | Min | Max. | Max. | Max. | Min. | Max | Min. | Max | Min. | Max | Max | Max | Max | ||
| ASTM A-53 | A | - | 0.25 | - | 0.95 | 0.05 | 0.045 | - | - | - | 0.4 | - | 0.15 | 0.40 for S | 0.4 | 0.08 |
| B | - | 0.3 | - | 1.2 | 0.05 | 0.045 | - | - | - | 0.4 | - | 0.15 | 0.40 for S | 0.4 | 0.08 | |
| Speci -cation | Grade | Mechanical Properties | |||||
| Yield Strength | Tensile Strength | % Elongation (G.L. 50 mm WT 8 mm) e (min.) | |||||
| Min. | Min. | ||||||
| PSI | MPa | PSI | MPa | ||||
| ASTM A-53 | A | 30,000 | 205 | 48,000 | 330 | e=625000 A02/U09 | |
| B | 35,000 | 240 | 60,000 | 415 | |||
| Honed tube for hydraulic cylinder | ||
| Standard | DIN2391, EN10305, JIS G3445 ASTM A519 GB/T 8713 | |
| Material | ST45, ST52, E355, E355SR, STKM13C, SAE1026,20#, Q235B, CK45… | |
| Heat treatment | BK+S | |
| Specification | Outer Diameter(mm) | Inner diameter(mm) |
| 40-480mm | 30-400 | |
| I.D Tolerance | H8-H9 | |
| Length | 3-9m(Customers usually choose the 4-5.8(m) | |
| Straightness | 1-1000 | |
| ID roughness | RA 0.4micron(max) | |
| Technology | Honed& SRB (SKIVED AND ROLLER BURNISHED) | |
| Scope | Honed tube for hydraulic cylinder ,swivel crane, injection machine and construction machine application | |
Liaocheng Economic and Technological Development Zone, Shandong Province, China
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