The numbers, in full
Everything a buyer or a design engineer usually has to ask for twice.
Mechanical properties
| Grade | Cold finished, hard (BK) | Cold drawn & stress relieved (BK+S) | |||||
|---|---|---|---|---|---|---|---|
| Tensile N/mm² | Elong. % | Tensile N/mm² | Yield N/mm² | Elong. % | Hardness HB | Impact −20 °C, J | |
| E355 | ≥ 700 | ≥ 8 | ≥ 650 | ≥ 580 | ≥ 15 | 195 | ≥ 27 |
Chemical composition, % by mass
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu | Al |
|---|---|---|---|---|---|---|---|---|---|
| E355 | ≤ 0.22 | ≤ 0.55 | ≤ 1.60 | ≤ 0.025 | ≤ 0.025 | — | — | — | ≥ 0.02 |
Bore tolerance, cold finished hard (BK) H8
| Bore Ø, mm | Upper limit, microns | Lower limit, microns | Band, mm |
|---|---|---|---|
| Up to 30 | +33 | 0 | +0.033 / 0 |
| Over 30 to 50 | +39 | 0 | +0.039 / 0 |
| Over 50 to 80 | +46 | 0 | +0.046 / 0 |
| Over 80 to 120 | +54 | 0 | +0.054 / 0 |
| Over 120 to 180 | +63 | 0 | +0.063 / 0 |
| Over 180 to 250 | +72 | 0 | +0.072 / 0 |
| Over 250 to 315 | +81 | 0 | +0.081 / 0 |
| Over 315 to 400 | +89 | 0 | +0.089 / 0 |
Values are the H8 grade limits applied to the finished bore. Weight per metre in the bore finder is nominal and rounded to two decimals.
Peeled & ground bar specification
| Material of construction | Alloy and carbon steel — C45, EN8-D, EN9, EN19, EN24, EN31 |
|---|---|
| Diameter | 20 mm to 100 mm |
| Length | Up to 6000 mm |
| Straightness | Approximately 0.1 mm per metre |
| Surface roughness | Approximately 0.1 Ra to 0.4 Ra |
| Run out | Approximately 20 to 40 microns |
| Tolerances | f7, f8, h8, h9 and other ISO tolerances as required |
| Chrome plating thickness | 20 to 200 microns per side |
| Chrome hardness | 850 HV to 1100 HV |
| Induction hardness & depth | Up to 65 HRC, in a depth of 2 to 5 mm per side |
Chrome plating and induction hardening are done to order. Tell us the finished size and we'll work back from it.
Where our steel ends up
Every cylinder on these machines runs on a honed bore and a ground rod. That is the work we supply into.
Hydraulic Cylinders
Bore & rod
Excavators
Boom · arm · bucket
Cranes
Telescopic · outrigger
Forklifts
Mast · tilt
Construction
Loaders · compactors
Agricultural
Tractors · harvesters
Petroleum
Pump jacks · rig gear
Industrial
Presses · machine tools
Built by engineers,
not by traders
For over twenty years, one founder's obsession with getting an engineering job right has driven this business. That work is now carried on by the next generation, on the same terms.
We manufacture peeled and ground bars, and we import honed tubes for the hydraulic trade. Between our CNC machines, bar peeling line, centreless grinders and straightening equipment, most of what a customer needs is finished here rather than passed along.
Our vision
To be the most trusted partner in hydraulic engineering.
Our mission
To create value through quality products, technical excellence, and lasting customer relationships.
Where we are
B-120, Ansal Pioneer Industrial Park, Patheri Road, Bilaspur, Gurugram, Haryana.
Four things we can
show you on paper
Not promises on a call. Each of these is something you can check against the numbers on this page.
Finished here, not passed along
Peeling, grinding, straightening and cutting all run at Bilaspur, so the finish is controlled rather than chased around the market.
Tolerances you can check
H8 on every honed bore, f7 · f8 · h8 · h9 on bars. The full H8 tolerance bands are published in the technical data above.
Cut to your length
Bars up to 6000 mm and tube cut to order. Tell us the finished size and we work back from it.
Two people to call
Deepak for sales and pricing, Shubham for orders and despatch. Send the size and you get a price and a delivery date back.