| Type: | Seamless |
|---|---|
| Technique: | Cold Drawn |
| Material: | Carbon Steel |
| Surface Treatment: | Polished |
| Usage: | Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Mining, Special Purpose |
| Section Shape: | Round |
| Customization: |
|---|
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Audited Supplier Hydraulic Seamless Honed Tubes are fabricated using finest quality metal which is acquired from legitimate vendors. Our illustrious designing team uses latest techniques to contrive Precision Honed Tubes and Cylinder Honed Tubes. Latest machinery is equipped to produce Mild Steel Hydraulic Honed Tubes in all national and international standards.
According to the customer's requirement, Hydraulic Honed Tubes and Air Cylinder Honed Tubes are cut to the required length and width. We adopt metals of the best ever quality to design ST52 Honed Tubes and EN 10305-1 Honed Tubes. Modern fabrication techniques are deployed by our team to produce corrosion-resistant DIN 2391 Honed Tubes.
Our Carbon Steel Hydraulic Honed Tubes are smoothly finished to reassure you convenient installation. ST52 Hydraulic Honed Tubes that we manufacture are flexible and durable.
Our Seamless honed tuning equipment is preferred by many firms for their distinguished quality.
| Standard | Grade | Chemical Components (%) | |||||
| Symbol | Material No. | C | Si | Mn | P | S | |
| DIN2391 | St 52 | 1.058 | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.025 | ≤0.025 |
The tubes shall be manufactured from cold drawn or cold rolled processes. The tubes shall be supplied in one of the delivery conditions as follows:
| Designation | Symbol | Description |
| Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and thus, have a rather high resistance to deformation. |
| Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
| Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
| Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere. |
| Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Delivery Condition Symbol in accordance with EN10305 and DIN2391
| Symbol in accordance with EN 10305 | Symbol in accordance with DIN2391 |
| +C | BK |
| +LC | BKW |
| +SR | BKS |
| +A | GBK |
| +N | NBK |
| Mechanical properties at room temperature | |||||||||||||
| Steel Grade | Minimum values for the delivery condition | ||||||||||||
| Steel Name | Steel Number | BK | BKW | BKS | GBK | NBK | |||||||
| Rm | A % | Rm | A % | Rm | ReH | A % | Rm | A % | Rm | ReH | A % | ||
| Mpa | Mpa | Mpa | Mpa | Mpa | Mpa | Mpa | |||||||
| St 52 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490 to 630 | 355 | 22 |
| Inspection or test types | Test frequency | |
| Internal test | Acceptance test | |
| Chemical analysis | M | M |
| Tensile testing | M | One per tested batch |
| Flattening test or extension test | M | Two per tested batch |
| Dimension verification | M | M |
| Visual inspection | M | M |
| NDT in order to identify leaks | Individual | Individual |
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