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Honed tube is well known as hydraulic cylinder tube in many industries. This is because honed tubes are the most important materials of manufacturing hydraulic cylinders. And as this kind of tubing is usually honed in tube inside diameter, it is known as honed ID tubing also.
The honed tubes suitable for various kinds of Precision Mechanical Tube, Honed Cylinder Tubing and Hydraulic Cylinder, Construct use Multi Joint Tube, Steel Axis Pipe, Injection Machine and Robotic Arm.
Honed Tube For Hydraulic Cylinder
Quality Standards
Seamless Honed Tubes (Steel) with a micro-finish and highly accurate in bore size within tolerance H7 or equivalent.
Honed Tubes are ready to use for hydraulic cylinder applications without further ID processing.
Inside diameter from 40 to 1000mm, Max length 20 meters.
Straightness: 0.5 /1000
Tolerance EXT: DIN 2391
Tolerance INT: ISO H8
Roughness(Ra): 0.2 to 0.4µ
| Grade | C | Si | Mn | P | S | Cr | Mo |
| St 45 (DIN1.0408) | 0.21 max | 0.35 max | 0.40 min | 0.025 max | 0.025 max | / | / |
| St 52 (DIN1.0580) | 0.22 max | 0.55 max | 1.60 max | 0.025 max | 0.025 max | / | / |
| E355 | 0.22 max | 0.55 max | 1.60 max | 0.025 max | 0.025 max | / | / |
| 1020 | 0.18-0.25 | / | 0.30-0.60 | 0.040 max | 0.050 max | / | / |
| 1026 | 0.22-0.28 | / | 0.60-0.90 | 0.040 max | 0.050 max | / | / |
| Grades | Delivery Conditions | Tensile Strength Rm (Mpa) | Elongation in the longitudinal direction Al (%) |
| St 45 | +A (GBK) | 390 min | 21 min |
| St 52 | +A (GBK) | 490 min | 22 min |
| E355 | +A (GBK) | 450 min | 22 min |
| 1020 | +A (GBK) | 390 min | 21 min |
| Processing Way | Cylinder Barrel ID (mm) | Max Length (mtr) | Straightness (mm/mtr) | ID Tolerance | Wall Thickness Tolerance (mm) | ID Roughness (μm) |
| Cold Drawn | 40-320 | 12 | 0.2-0.5 | H8-H10 | ±5% | 0.8-1.6 |
| Cold Rolled | 12-100 | 12 | 0.2-0.5 | H8-H10 | ±5% | 0.8-1.2 |
| Cold Drawn+Honed | 40-500 | 8 | 0.2-0.3 | H7-H9 | ±5% | 0.2-0.8 |
| Cold Drawn-SRB | 40-400 | 7 | 0.2-0.3 | H8-H9 | ±5% | 0.2-0.4 |
| Deepth Drilling-Honed | 320-1100 | 8 | 0.2-0.3 | H7-H9 | ±8% | 0.2-0.8 |
| Deepth Drilling-SRB | 320-600 | 7 | 0.2-0.3 | H8-H9 | ±8% | 0.2-0.4 |
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