Hot Rolled Special Profiles
Near net shape sections rolled from your drawing in cross sections up to 7000 mm2
What Hot Rolled Special Profiles Is and Who It Is For
Hot rolled special profiles are rolled to a cross section you define instead of being machined out of round or flat bar. Tianhao rolls them from 10 mm2 up to 7000 mm2 in lengths up to 12 m or cut to a fixed length, in carbon, free cutting, alloy and stainless grades. They are the usual starting point for beater bars, ploughshare sections, bending tools and seat fastening rails.
Key Benefits
- Cross section arrives close to the finished shape, so less material is cut away and less scrap is paid for
- One rolled section can replace a welded assembly of flat and angle stock
- Straightness can be tightened to 0.3 mm/m on request when the part feeds an automatic machine
- Fixed length cutting and hole punching are done before the bars leave us
| Surface | Ra < 40 um, defects 0.3 mm max |
|---|---|
| Size tolerances | up to 0.5 mm |
| Straightness | standard <= 1.0 mm/m, on request <= 0.3 mm/m |
| Twisting | standard <= 1 deg/m, on request <= 0.5 deg/m |
| Cross section | 10 mm2 up to 7000 mm2 |
| Length | up to 12 m or cut to fixed length |
Who It Is For
- Agricultural machinery OEMs buying wear sections in volume
- Machine tool builders who need tool steel sections in rolled condition
- Railway interior suppliers working to fixed cut lengths
Problems It Solves
- Machining a profile from bar wastes both material and spindle hours
- Welded-up sections distort under load and need straightening
- Bought-in standard sections rarely match the real cross section on the drawing
Technical Features
- Rolled to a customer cross section, not a catalogue section
- Optional heat treatment after rolling
- Additional straightening on automatic presses
- Delivered in bars or cut to fixed lengths with holes
Where Hot Rolled Special Profiles Is Used
Beater bars and ploughshare profiles for agricultural machinery
Beater bars and ploughshare profiles for agricultural machinery
Bending tools for sheet bending machine builders
Bending tools for sheet bending machine builders
Seat fastening systems in railway carriages, supplied in bars up to 8
Seat fastening systems in railway carriages, supplied in bars up to 8 m
Braking system components cut to customer length
Braking system components cut to customer length
Materials
- Carbon steel
- Free cutting steel
- Alloy steel
- Stainless steel
- Nickel alloys
- High temperature alloys
- Titanium alloy
- Brass and copper alloys
Quality Control
- Sample bars produced and released for buyer inspection and testing before volume production
- Cross section and straightness checked against the agreed tolerance band
- Surface checked for defects over the 0.3 mm limit
Customization Options
- Cross section to your CAD drawing
- Steel grade chosen by you or advised by our engineers
- Tighter straightness and twisting on request
- Fixed lengths, holes and end preparation
How We Make It
Drawing
Drawing and steel grade review
Tooling for the cross section
Hot rolling
Optional heat treatment
Straightening on automatic presses
Cutting
Cutting to length, punching, inspection
How It Compares
Compared with cold drawn profiles, hot rolled sections carry a coarser surface and wider tolerances but allow much larger cross sections, up to 7000 mm2 against 3800 mm2, and longer bars, up to 12 m against 6 m.
Use Guide
- Send the cross section drawing with the tolerance that actually matters for assembly
- State whether the bars feed an automatic machine, so we can quote tightened straightness
- Confirm bar length or the fixed cut length and hole pattern
- Approve the sample bars before we release volume production
Often Ordered Together
Cold Drawn Special Profiles
Drawn sections held below 0.05 mm on size with a Ra under 2.5 um surface
View details
Hot Extrusion Special Profiles
Extruded steel sections for shapes that cannot be rolled or drawn
View details
Agricultural Beater Bar Profiles
Hot rolled beater bars ploughshare sections and h9 flats for farm machinery
View detailsWhere To Read More
Questions Buyers Ask About Hot Rolled Special Profiles
What is the largest cross section you can hot roll?
Up to 7000 mm2. Below about 10 mm2 the section is better produced by cold drawing.
How straight are the bars as standard?
Standard straightness is 1.0 mm/m or better. On request we straighten to 0.3 mm/m on automatic presses.
Can you supply bars already cut and drilled?
Yes. Profiles can be delivered in fixed lengths with holes rather than in mill lengths.
Get a Quote for Hot Rolled Special Profiles
Send the drawing, the quantity and the delivery condition you need. We reply with price, lead time and a sample plan.