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Beam Rolling,
I Beam Bending Machine
H Beam Bending Machine

Due to the rapid development of China’s basic engineering, BIT series profile bending machines/i beam bender are more widely used in steel beam bending, such as the application of Chongqing Metro, a key project in China.

When using the PBH H-beam and I-beam bending machine, the exclusive processes utilizing the latest technology enable the production of a range of rolled components within tight tolerances featuring impressive repeatability.

i beam bending machine

The H-beam bending machine is a profile bending machine(also called a section bending machine) used in metal fabrication and construction to bend H-shaped beams (also known as I-beams) into various shapes and angles.

The PBH profile bending machine/angle roller consists of several rollers and hydraulic cylinders that apply pressure to the beam to gradually bend it into the desired shape. The machine can be programmed to bend the beam to specific angles, and it can handle different sizes of H beams.

H beam bending machines are commonly used in the construction of large structures such as bridges, high-rise buildings, and industrial facilities. They can be used to create curves, angles, and bends in the H beams, which can be important for achieving the desired structural integrity and aesthetic appeal of the final product.

PBH I-Beam and H-Beam Bending Machines

PBH Series section bending machine is a multifunctional machine, it can bend beams in hard-way or easy-way every configuration. The beam and wide flange are both bent by the BIT series section bending machine, from very small sizes to very large sizes. Its ability to bend wide flange and I-beam the easy way (against the weak axis) and the hard way (against the strong axis).

With PBH Profile Bending Machine able to bend the gamut of steel beam types including;

  • W-Beams (straight flange)
  • I-Beams/Junior Beams (tapered flanges for strength)
  • S-Beams (sloped inner flange, “American Standard” beams)
  • H-Beams (longer flanges)

BIT make sure that we commend the profile bending machine/I Beam Bending Machine best fit for your job to reduce your cost and minimize tangent/trim at the ends(Unbend flat end).

Hard Way Bend I Beams H Beams/Rolling Beam

Unbendable flat end

When beams are run through any profile bending machine each end of the beam has a length that can be unbent, because it is not in contact with the top roller. This part of the residual unbend flat is difficult to completely eliminate during the roll bending process, and it is easy to produce quality and equipment accidents, so it should be prevented.

When bending on a common profile bending machine(symmetrically bending), the remaining unbend flat is usually about half of the center distance of the lower roller, which is also related to the thickness of the beam. With the PBH Profile Bending Machine(asymmetrical bending) the unbend flat end is approximately 1/6 to 1/10 of the symmetrical bend.

Read More: Steps Of Curved Steel Beams – Steps 3#

Video of 4-roll and 3-roll section bending machine bending H-beam

PBH CNC Profile Bending Machine
h beam bending machine
Rolling Beam with PBH I Beam Bending Machine
Beam Rolling With PBH 4-Roll CNC I Beam Bending Machine

High bending precision, superior performance, the best choice for bending beam, BIT series beams bending machines ensures even the most demanding beam forming projects are completed on time and to industry-required guidelines.

Read More: Profile Bending Machine: 5 Things Must Consider Before Purchasing

Specifications of PBH Profile Bending Machines

h beam bending machine
h beam bending machine

Due to the rapid development of China’s basic engineering, BIT series profile bending machines are more widely used in steel beam bending, such as the application of Chongqing Metro, a key project in China.

Hard WayEasy Way
Inside Diameter
Inside Diameter
PBH-120  120600
PBH-140  140600

4-roll H/I-Beam bending machine photo

BIT is a machine customized by China Sany Heavy Industry. It can be seen from the mold that it can process and bend beam and channel profiles.

Of course, it can also be replaced with our combined mold and pipe mold to bend various types of materials to become an ordinary profile bending machine.

What is Beam Bending?

Rolled steel beams (Section Bending Universal Column) are used everywhere – in structures for functionality or aesthetic appeal, in circular shell stiffening rings on vessels, and for monorails or roof trusses. Steel beams can be rolled vertically (the weak axis) or horizontally (the strong axis). When rolling steel beams, it is important to consider distortion. Read More: What is Beam

Beam bending involves creating curved steel beams for industrial applications. This process uses substantial force and tooling dies to bend steel beams according to application requirements. Employing the latest equipment and proven production processes, the PBH H-beam and I-beam bending machine can bend steel beams in the following orientations:

Bending Profiles H-Beams
Bending Beam “Hard Way” And “Easy Way”

As part of our bending process, we select a compatible machine for your project, ensuring that your rolled steel beam is produced within the desired tolerances and with high repeatability. By choosing a machine that tailors the bending process, we can reduce material waste from trimming and provide a cost-effective premium bending service.

Rolled steel beams (Section There are two primary methods used in beam bending applications, informally known as the “easy way” and the “hard way” .

  • Hard Way: Tooling face perpendicular to the Beam Web
  • Easy Way: Tooling face parallel to the Beam Web

Rolled steel beams (Section BBending beams and channels on the hard-way require a strong bending force because the section modulus along the x-x axis is always very large. Moreover the combination of the large bending forces required by the process with the relatively thin thickness of the beam cause the deformation of the web itself.

Notes: When the channel steel is bent horizontally, its work difficulty is equal to H-beam bending


Bending beam profiles photos

Read MoreBefore and after bending the beam in a hard way. What needs to be checked?

Three methods of bending beams

When attempts the bending of beams the hard way (x-x axis or against the strong axis), the result can be an unacceptable crippling of the web. So in the profile bending need use a variety of methods to avoid such deformation.

induction bending h beam
Hot bending beam
  • Cold roll bending beam: The profile bending machin(also called angle roller) can be configured to have additional rolls pulling on the outside flange of the beam rolled the hard way. The profile bending machine operator must balance the compressive forces of the main three rolls with the tension supplied by the rolls pulling on the flange to keep the web from distorting as the beam is curved.
  • Stretch bending beam: Stretch bending machines support a beam at two points and apply pressure to induce a curve. Without some sort of mandrels placed on the web between the flanges, only minimum cambers can be achieved with a cambering machine.
  • Hot bending beam: Induction benders heat a small section of a beam to make it more malleable during the bending process. After being heated the steel beam is pushed forward toward a swing arm which creates the curve.

Six Steps Of Beam Rolling With Profile Bending Machine

The beam is placed in the proflie bending machine and the operator adjusts the three rolls to the proper spacing before starting the bending process. Next is slowly begins rolling, and need frequently checks the beam for distortion of the web and flanges in these early passes. Several additional passes are carried out, with the operator measuring the overall radius after each pass to check the beam’s progress. The operator confirms the beam’s final radius, completing the bending process.The curved beam is lifted out of the proflie bending machine and moved to another area of the shop where the member’s geometry is checked one final time.

Six Steps

  • Steps 1#: Loading steel beams – the steel beam is inserted in between the top roller and the right lower roller. The steel beam can be supported if necessary and is not subject to deformation stress.
  • Steps 2#: The right lower roller up to the top roller movement achieves the pinching position – the steel beam is blocked in between the rolls and can be moved forward and backward rotating the rolls. The pressure exercised is lower than the one necessary to deform the profile.
  • Steps 3#: Pre-bending between the top roller and the left roller – the right roller slowly rises, starts rolling, and performs pre-bending between the top roller and the left roller.
  • Steps 4#: Working phase – in this phase the pressure increases and the deformation of the profile takes place, by translation of the profile and movement of the rolls.
  • Steps 5#: Pre-bending between the top roller and the right roller – The left roller is down and the right roller is raised. The steel beam is sent to the left and the three rolls begin rolling, pre-bending between the top roller and the right roller.
  • Steps 6#: Unloading of the steel beam – the pressure on the steel beam is eliminated and is increased the space between the rollers so that the steel beam can be extracted from the profile bending machine.


It is clear that, in order to load the steel beam on the profile bending machine/Beam Rolling Machine, a sufficient distance between the rollers must be present. It is also clear that, in order to block the profile in between the rolls and to apply pressure, it is necessary that this distance is reduced. Une or more rollers must be capable to move with respect to the others.

The H beam (metal workpiece) is placed inside of an induction coil, which, when turned on, heats localized sections of the H beam to temperatures ranging between 1750° F to 1850° F. The exact sections depend on the part design and the exact temperature depends on the base material. As each section reaches the correct bending temperature, the machine slowly moves the H beam through the induction coil as a fixed radius arm mechanism applies the necessary force to bend the workpiece at the heated area. When the H beam exits the induction coil, it is immediately quenched with water to minimize thermal expansion.

This process can take up to an hour since it must occur gradually to avoid snapping or deforming the structure.

Also, read: H-BEAM & I-BEAM bending process

Curved Metal Beam Applications

Beam bending machines produce rolled steel beams for various industrial applications. The PBH H-beam and I-beam bending machine use proprietary methodology and state-of-the-art equipment to fabricate high-quality rolled beams for the following applications and industries:

  • Architectural & Structural
  • Transportation Equipment
  • Oil & Gas Applications
  • Industrial Equipment
  • Playground Structures
  • Signs/Displays/Artwork

High-Quality Beam Bending Machine to Produce Curved Steel Beams for Your Project

BIT is a trusted section bending machine fabricator with over 40 years of technical experience. Our tested proprietary methodology and state-of-the-art machinery work together to create high-quality metal fabrication products according to your requirements. We can produce premium curved steel beam bending machines with tight tolerances and repeatability, ensuring consistency and reliability in your applications. BIT proudly aims for excellence in beam bending, minimizing material distortion and meeting exacting specifications