SPECIAL STEELS OFFERS DEEP HOLE DRILLING
Creating a hole through material can be a costly and time-consuming in mechanical engineering. In addition, the required material grade may not be available in Hollow Bar or may be a non-standard size. Special Steels specialises in providing engineering steel with a hole in it. We can meet most client requirements by combining our deep hole drilling, profile cutting, hollow bar size range, and in-house lathe.
Deep Hole Drilling
Special Steels provides deep hole drilling to ensure that we deliver components that comply with customer specified requirements.
We drill holes through round bars to create non-standard hollow bar grades and sizes.
Discuss your deep hole drilling needs with a salesperson at Special Steels. We offer highly customised, just-in-time solutions from our team of experts.
drilling size parameters
With our Deep Hole Drilling machine, we are able to drill to the following specifications:
| Parameters | Minimum | Maximum |
|---|---|---|
| Bar Diameter | 50mm | 500mm |
| Hole Length | 180mm | 3,700mm |
| Hole Diameter | 24mm | 180mm |
Drilling Tolerances:
- Black Bar – 3mm over a meter
- Bright Bar – 1mm over a meter
Steel Grades
Hollow Bar (ST52 & 16Mn)
Hollow Bar is a low carbon steel round bar with a hole cut through the diameter’s centre.
This steel is typically used to manufacture hydraulic cylinder barrels or honed cylinders, bushes, industrial rings, and case hardened roller rolls for coal cutting and spacers.
Hollow bar is non-alloy steel that contains 0.22% carbon. It is versatile steel that is formed with a hole in the centre to shorten lead times that would typically be spent drilling the hole through.
It is easily machined and welded and can be case hardened using carburising, carbonitriding, nitriding, nitrocarburising and tuftriding.
Special Steels sells ST52 hollow bar. We cut the quantity of EN3 to the tolerance required for precision engineering and manufacturing.
We also offer machine preparation and deliveries.
Commonly known as hollow bar or mechanical tubing
Chinese: Q345B
German: DIN 2391 Part 2
- Carbon Steel
- Machinability good
- Weldability good
- Required hardness can be achieved by case hardening the outer surface by means of the following methods i.e carburising, carbonitriding, nitriding, nitrocarburizing, tuftriding
Hydraulic cylinders / Honed cylinders
Bushes (not subject to severe weather)
Rings (industrial)
Case hardened rollers (light duty)
Rolls for coal cutting equipment
Spacers
Ring Profiling
Special Steels provides ring profile cutting service on the steel plates that we sell.
The focus of our ring profile cutting service is to deliver cut components of exacting and consistent dimensional tolerances with a high quality cut finish. By so doing, we aim to save our clients time and money through reduced setup times and reduced cutting tip wear.
- Amada Co2 Optic Laser: cutting capability up to 25mm thickness
- Messer Plasma (high definition): cutting capability 20 mm to 45mm thickness
- Messer Oxy Fuel: cutting capability 20mm to 300mm thickness
We have sourced the latest technology in ring profiling and we deliver profiled products with special attention to edge finishing and consistent dimensional tolerances.
Submit a drawing for the ring profiling you want done or simply make contact with our sales department.
Ring size parameters
We are able to create rings to the following specifications:
| OD | ID (min) | Max. Length |
|---|---|---|
| 100-550mm | 70mm | 300mm |
| 70-95mm | 30mm | 100mm |
