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Hydraulic cylinder is the executive component of hydraulic transmission system, it is the energy conversion of hydraulic energy into mechanical energy. The hydraulic motor is to achieve continuous rotary motion, and the hydraulic cylinder is to achieve reciprocating motion. Hydraulic cylinder structure type has piston cylinder, plunger cylinder, swing cylinder three categories, piston cylinder and plunger cylinder reciprocating linear motion, output speed and thrust, swing cylinder reciprocating swing, output angular speed (speed) and torque.
1. Since there is no oxide layer on the outer wall, and there is no leakage when withstanding high pressure, it can have good performance in terms of use performance.2. The surface roughness, ovality, surface hardness, etc. can be obtained through processing and meet the expected requirements. Moreover, if there is a residual stress layer after processing, the fatigue strength of the cylinder steel pipe can be effectively improved.| 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 | |
| ASTM A-106 | A | - | 0.25 | 0.27 | 0.93 | 0.035 | 0.035 | 0.1 | - | - | 0.4 | - | 0.15 | 0.4 | 0.4 | 0.08 |
| B | - | 0.3 | 0.29 | 1.06 | 0.035 | 0.035 | 0.1 | - | - | 0.4 | - | 0.15 | 0.4 | - | 0.08 | |
| c | - | 0.35 | 0.29 | 1.06 | 0.035 | 0.035 | 0.1 | - | - | 0.4 | - | 0.15 | 0.4 | 0.08 | ||
| ASTM A333 & A334 | 1 | - | 0.3 | 0.4 | 1.06 | 0.025 | 0.025 | - | - | - | - | - | - | - | - | - |
| 6 | - | 0.3 | 0.29 | 1.06 | 0.025 | 0.025 | 0.1 | - | - | - | - | - | - | - | - | |
| 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 | |||
| ASTM A-106 | A | 30,000 | 205 | 48,000 | 330 | 35L / 25T | |
| B | 35,000 | 240 | 60,000 | 415 | 30L / 16.5T | ||
| c | 40,000 | 275 | 70,000 | 485 | 30L / 16.5T | ||
| ASTM A333 & A334 | 1 | 30,000 | 205 | 55,000 | 380 | 35 | |
| 6 | 35,000 | 240 | 60,000 | 415 | 30 | ||
| Product Name |
Hydraulic Cylinder Barrel/Tube |
| Material | ST52, CK45, 4140, 16Mn, 42CrMo, E355, Q345B, Q345D, Stainless Steel 304/316, Duplex 2205,etc. |
Delivery Condition | BK, BK+S, GBK, NBK |
Straightness: | ≤ 0.5/1000 |
Roughness: | 0.2-0.4 u |
| Diameter | 6mm - 1000mm |
| Length | 1000mm - 12000mm |
Tolerance EXT: | DIN2391, EN10305, GB/T 1619 |
Tolerance INT: | H7, H8, H9 |
| Shape | Round |
| Technology | perforation /acid pickling / phosphorization /cold drawn /cold rolled /annealing/ anaerobic annealing |
Protection: | anti-rust oil on inside and outside surface, plastic caps in both ends. |
| Used | Hydraulic Cylinders |
Packing: | bundle with steel strip and PE sheet package or wooden case. |
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