Hydraulic Flanging Machine for Dished Ends: Flange Large Heads up to 20 mm Thick and 4000 mm in Diameter

After a head has been dished, its knuckle and straight flange must be formed before it can be welded to the tank. For large heads, that job needs a heavy, rigid and well-controlled machine. The SBFM Hydraulic Flanging Machine for Dished Ends is marked 20 mm x 4000 mm and without centerhole in the product image, which means it is built to flange big heads that have no hole in the middle.

Quick Product Facts

  • Product: Hydraulic Flanging Machine for Dished Ends
  • Manufacturer: SBFM Machinery, Konya, Türkiye
  • Category: Other
  • Capacity: 20 mm x 4000 mm, as stated in the product image (normally plate thickness x head diameter; confirm with the manufacturer)
  • Head type: Without centerhole, as stated in the product image
  • Process: Hydraulic flanging of knuckle and straight flange on dished ends
  • Details: Heavy upper beam structure, hazard-marked clamping area and overhead lifting frame

What Is a Hydraulic Flanging Machine for Dished Ends?

A flanging machine forms the edge of a dished end: the knuckle radius and the straight flange. This is the step that lets the head fit the shell and be welded with a clean, strong seam. A hydraulic machine controls the forming force smoothly, which suits large and thick heads.

Industry sources note that dished ends can be flanged with or without a centre hole, and that machines for heads without a centre hole use a closed structure with clamping cylinders that block the disc in place. This matches the product image, where the machine is marked as without centerhole.

Built for Large Heads without a Centerhole

Flanging a head without a central opening means the machine cannot hold the head by a hole. Instead, it must clamp the head securely from above and below while the forming rolls work around the edge. In the photo, a large dished head sits on the machine, its flat underside supported by a hazard-marked clamping area, while a heavy box-section beam structure above the head carries the upper mechanism.

The light grey body with blue stripes and SBFM markings looks rigid and well supported. A yellow overhead frame at the side is visible, which suggests how large heads can be lifted in and out. Together these features point to a machine made for heavy, large-diameter work.

Key Features and Benefits

  • Large capacity; 20 mm x 4000 mm as stated in the product image
  • For heads without centerhole; as marked on the machine
  • Hydraulic drive; for controlled and smooth forming force
  • Heavy upper beam structure; for rigidity under load
  • Hazard-marked clamping area; for safer operation
  • Overhead lifting frame; to help handle large heads
  • Consistent flanges; for good fit-up when welding to the shell

Applications

  • Pressure vessel heads
  • Boiler and heat exchanger ends
  • Storage tank and silo bottoms
  • Fuel, water and chemical tanker heads
  • Food, dairy and brewery tank ends
  • Agricultural and greenhouse water tank ends

Tips for Accurate Flanging

Centre the head carefully and clamp it securely before forming. Flange gradually in several passes, checking the knuckle radius and flange height with a template. Plan for thinning and edge preparation as required by the project specification. Match the flanging machine with your dishing press so that the head profile and diameter fit together and arrive at the welding bay ready to use.

Part of a Complete Sheet Metal Forming Range

SBFM Machinery has built sheet metal forming machines in Konya since 1998. Alongside this machine, our range includes hydraulic dishing presses, polishing machines for dished heads, hydraulic roll bending machines, profile and pipe bending machines and special corrugated and grooved rolls. That means a single partner can equip your workshop from tank heads to shells, rings and pipes.

Why Choose SBFM Machinery?

Machines are designed, cut, welded, machined, assembled and tested in our own facilities, and our quality policy rests on customer satisfaction. We believe we grow together with our customers, so we listen first and recommend the model that fits your work, not simply the largest one. Technical guidance and spare parts help keep your machine productive for years.

How to Choose the Right Machine

  • Plate thickness, material and largest head diameter
  • Whether heads have a central hole or not
  • Knuckle radius and flange height required
  • Daily output and loading method
  • Control level, tooling and safety features
  • Floor space, crane capacity and power supply

Maintenance for Long Service Life

Use clean, filtered hydraulic oil, check cylinders, hoses and seals, and lubricate moving parts and guides. Inspect clamping parts and the overhead lifting frame regularly. A simple routine keeps flanging accurate and the machine reliable for years.

Frequently Asked Questions

What does 20 mm x 4000 mm mean? It is the capacity stated in the product image and normally means 20 mm plate thickness and 4000 mm head diameter. Please confirm for your material.

What does without centerhole mean? The machine flanges heads that have no hole in the middle, so the head is clamped without using a central opening.

How do I choose the model? Send us your plate thickness, material and head diameter, and our engineers will recommend the right model.

Request a Quote on MachineWorld.biz

Planning to flange large dished heads? Contact us at +90 542 479 69 00 or export@MachineWorld.biz, or explore SBFM machines on MachineWorld.biz and request your quote today.

Precise flanging. Reliable production. Request a quote today.

Flanging Machines by SBFM