SUPPLY SPECIFICATION
What We Supply
Sizes, grades, mills and tolerances for our forgings & special components range.
| Sizes | Grade families | Make / mill | Tolerance | Testing |
|---|---|---|---|---|
|
|
Forged through our partners, including ABS (Italy) and Parbhat Heavy Forge. | As forged · machining allowance to your drawing | Mill certificate · Chemistry · Mechanical tests · UT as specified |
Processing on Forgings
OneKaizen's forging partners open-die forge your part. We heat treat in-house or through the partner, then inspect it against your drawing before it ships.
| Processing route | Typical scope | Output / control |
|---|---|---|
| Open-die forging | Round · square · custom sections, through our forging partners | Reduction · dimensions |
| Heat treatment | Annealed · normalised · hardened and tempered, grade-specific | Hardness · mechanical properties |
| Inspection | Your drawing or order standard | Dimensions · UT · certificate |
How We Make Special Forgings
- 1
Review the drawing
We check dimensions, grade, condition and tests against what the forge can make, and agree the machining allowance.
Sourcing team - 2
Select the grade and ingot
We specify the steel and source the ingot or bloom for your part.
Sourcing team - 3
Forge
The part is open-die forged to size with the reduction your drawing needs.
Partner forge - 4
Heat treat
Annealing, normalising or quench and temper to your required condition.
In-house / partner forge - 5
Inspect
Dimensions, chemistry, mechanical tests and UT to your order standard.
Quality team - 6
Pack and deliver
Each piece is tagged with its heat number, protected and shipped to your plant or port.
Supply chain team
Grades We Supply in Forgings & Special Components
Grades we forge most often, with their nearest equivalents. Send us any other grade on your drawing.
| Family | Grades |
|---|---|
| Through-Hardening Alloy Steel | EN19 / SAE 4140EN24 / SAE 4340SAE 4130SAE 4145EN18 / SAE 5140EN30B39NiCrMo3 / 1.651025CrMo4 / 1.7218 + 5 more |
| Case-Hardening Steel | 18CrNiMo7-6 / 1.6587 |
| Nitriding Steel | EN40C / 1.8519EN40B / 1.8515EN41B / 1.850934CrAlMo5-10 / 1.850734CrAlNi7-10 / 1.8550 |
| Bearing Steel | EN31 / SAE 52100100CrMo7-3 / 1.3536100CrMnSi6-4 / 1.3520SUJ3SAE 51100 |
Quality, Packing and Delivery
Quality
Mill certificate with chemistry and mechanical tests, heat-number traceability, and dimensional inspection against your drawing. UT as specified.
Packing
Each piece is tagged with grade, size and heat number, and protected against rust. Heavy pieces ship on skids or in cradles.
Delivery
To your plant anywhere in India by road. Export packing and documents for buyers abroad.
Applications
Forgings & Special Components Questions
Can you quote a forging from my drawing?
Yes. Send the drawing, grade and quantity and we quote to it. We review it with our forging partners before we confirm the price and delivery date.
What sizes of forgings do you supply?
Round forgings from Ø 250 to 1,030 mm and square forgings from 280 to 800 mm, in lengths of 2–10 m. Single pieces go up to about 10 t.
Which grades can you forge?
EN8, EN19, EN24, 42CrMo4, 34CrMo4, 18CrNiMo7-6, 16MnCr5 and 20MnCr5 among others. Send us any grade on your drawing.
Do you forge in-house?
No. OneKaizen forges through our partners, including ABS in Italy and Parbhat Heavy Forge in India. We handle sourcing, heat treatment, inspection and delivery.
What is the difference between a forging and a rolled bar?
A forging is shaped by pressing, which refines the grain and closes internal voids in large sections. Rolled bar tops out at about Ø 350 mm, so larger sections come only as forgings.
Do forgings come with test certificates?
Yes. Every forging ships with a mill certificate showing chemistry and mechanical tests, traceable to the heat number. UT is available as specified.
Do you deliver forgings across India and export them?
Yes. OneKaizen delivers to plants across India and exports forgings to buyers abroad with export packing and documents.
Can you supply forgings machined to size?
Yes. OneKaizen rough machines forgings through our machine-shop partners to your drawing, so you receive them with the machining allowance you specify.
Sizes, grades and tolerances above are our standard range. Other sizes and grades are available on request. Final values are confirmed against your drawing and the mill certificate.
