Frequently
Asked Questions

Sheet metal forming equipment is the process of applying pressure on the sheet metal to permanently deform the material. The main products are metal forming equipment such as CNC plate rolling machines, plate leveling machines , pressure machines, hydraulic profile bending machines,etc... EZHONG is mainly competitive in bending roller machines and plate leveling machines with over 60 years of design and manufacturing history. As one of roll forming machine manufacturers in China, we have thousands of users and have manufactured the largest plate rolling machine and plate leveling machine in China. At present, the technology of EZHONG machinery and the technology of European countries are keeping pace.

Commonly used sheet metal materials: iron, steel, aluminum, copper, titanium, and so on.

Choosing the right plate roll bending machine will help you to handle your business easily: First of all, the system of the plate bending press that plate bending machine suppliers provide must be practical and easy to use. The current CNC plate rolling/bending machine is easy to produce. If the system is complex, it will waste time. The system of the plate rolling/bending machine must be stable. If something happens to the metal fabrication equipment , a big problem will occur after a few days, so how to choose a stable system? You need to check the product history and customer evaluation, and also need to see the production experience of the plate rolling machine manufacturers/suppliers if there are technical elites. The material and processing technology of work plate rolls require quenching and tempering to increase the surface hardness; structural parts need to eliminate stress, and high-precision processing equipment can ensure assembly accuracy; bearings are also crucial. The maximum working capacity of the three-roller metal plate bending machine depends on the four main parameters of the maximum coil thickness (pre-bending thickness), the maximum coil width, the coil material, and the minimum diameter of the coil in the largest specification. These four-parameter variables influence each other in work. The conversion relationship between the plate bending rolling machine, that is, the conversion relationship of the machine's working capacity, is provided to the user in the random manual so that the user can use and select the roll plate bending machine more reasonably.

Sheet bending roller machine operation: standard use process. This machine is a three-roller plate bending machine with pre-bending and variable center distance. This model is different from the traditional model. Because the two lower steel plate rollers can move horizontally at the same time or completely independently, adjust the pitch between the steel plate rollers; the upper plate rollers can move up and down. Due to the above characteristics, the bending roll machine and campus capabilities have been greatly improved, and the coiling thickness has also been greatly increased. Since the two lower steel plate rollers can obtain the same force and processing capacity, increasing the distance between the two lower plate rollers can greatly improve the board rolling of metal plate bending machines and campus capabilities. The shortening of the distance between the lower steel plate rollers can make it easier to drag the steel plate, and it can form better when rolling small diameter and thick steel plates and is helpful for the measurement of the welded cylinder. Increasing the distance between the lower steel plate rollers makes it easier to roll thick steel plates. When the lower steel plate roller moves horizontally, the left and right cylinders of the upper plate rollers cannot be pressurized. Before all the lower steel plate rollers move horizontally, it must be ensured that the upper roller is raised to an appropriate height on the line before the lower roller can move; otherwise, the lower plate roller must not move horizontally. The reverse movement of the upper and lower steel plate rollers should be braked first and then reverse operation. The rebound is more pronounced during cold rolling, and a certain amount of overwinding must be applied. After the required amount of overwinding is reached, it should be rolled back down to this curvature several times. High-strength steel has a large rebound. In order to reduce the rebound, it is best to perform an annealing treatment before the final forming. After the steel plate bending machine workpiece is rolled, the upper steel plate roller should be raised to more than 300mm on the line and the upper steel plate roller is in a horizontal state before unloading the workpiece.

The plate rolling machine is a type of plate rolling machine used in many large, medium and small manufacturing plants. It makes the production of the factory more efficient. The quality of the rolling machine sold now is also good. Of course, during its use, the coiling machine should pay attention to the correct way and method of use. The operator should understand the operating procedures of the coiling machine in detail, and the rules of use, and should not operate blindly without any training. Otherwise, it is likely to bring a lot of problems and troubles, reduce the efficiency of the production work such as coils, delay the production process more time, and cause certain losses. For the bending plate machine , analyze its processing function and cost resistance, guess the service life, and change the tool in time if necessary. For the majority of customers, the important guarantee of the rolling machine is the quality of the rolling machine. However, the word quality includes many aspects, such as the efficiency of machinery and the production technology of the bending machine itself. In the past, most plate rolling machines used magnetic powder clutches to control tension, but the speed of magnetic powder clutches could not be high, which would easily cause high-speed friction of magnetic powder during operation, resulting in high temperature, shortening its life, and in severe cases, it would jam and hinder the operation of the machine. With the development of science and technology, a new generation of plate rolling machines occupy the market. It uses servo drive technology, vector frequency conversion motor to control the tension system of the plate bending machine, automatic detection by the swing roller, intuitive man-machine interface, more stable and reliable tension system, and easy operation. The new generation of equipment also uses advanced technology from the United Kingdom. The light-touch computer interface control makes the operation easy and the perfect roll paper force setting program can be directly controlled on the man-machine interface. The operator of the coiling machine should tidy up the working environment and maintain a good operating environment before operating. At the same time, the operator must be dressed neatly to avoid getting caught in the roll at the corner of the work. During the process, it must be noted that the operator can only stand on both sides of the workpiece is a reasonable position. Only when the operator is familiar with and mastered the operation and use of the plate bending machine, can the efficiency of the use and work of the plate bending machine be guaranteed, and the personal safety of the production operators can be guaranteed, thereby reducing the cost required for production and improving the economic benefits of production.

The plate rolling machine is general equipment for rolling metal sheets into cylindrical, arc, or other shapes. The working capacity of the plate rolling machine refers to the ability of the plate to roll the maximum plate thickness and width according to the specified yield limit in the cold state. The movement form of the metal fabrication equipment can be divided into two forms of movement: main movement and auxiliary movement. The main motion refers to the rotation, bending, and other motions of the upper and lower rollers forming the plate bending machine to process the plate. The main motion completes the processing tasks of the plate bending machine. Auxiliary movement is the movement of the rolling machine in the form of loading, unloading, lifting, tilting, and turning of the inverted head frame during the rolling process. The use of rolling machine equipment is not only related to the quality of the product but also has a lot to do with daily maintenance. If employees conduct regular inspections and repairs on the equipment in daily production, they can prevent problems and learn more about related issues. The knowledge can respond to emergencies. Let's talk about the regular maintenance of the rolling machine : 1. Add oil to each oil cup lubrication and manual lubrication points as required. 2. Roll the plate according to the parameters of the plate rolling machine rules, and can not exceed its limit. 3. After turning on the power, carry out the movement of the lower roller in both positive and negative directions and the lifting movement of the upper roller to check whether each movement is abnormally stuck. 4. Strictly operate in accordance with the rolling processing procedures and operating methods. When the upper roller is lifted to the limit position, pay great attention to the safe operation of the equipment. 5. All personnel must reconcile with each other during operation, follow the instructions of the person in charge of the rolling plate, and prevent the machine from being operated without a password. 6. Pay great attention to safety when performing plate rolling operations to prevent your hands from being pressed by the steel plate and being rolled in with the steel plate. 7. When the main drive is stopped, the upper roller can be lifted and lowered, the overturned bearing can be tilted and reset, and the upper roller can be tilted. 8. In the course of operation, if irregular noise, impact, and other abnormal phenomena are found, the machine should be shut down immediately for an inspection. 9. When lifting the steel plate or drum with a crane, be careful not to bump into the machine. 10. After the coiling operation is completed, the place where all the materials are completed should be cleared, and the power supply should be closed in time. What problems should occur in the operation should be shut down immediately? 1. The temperature rise of the bearing seat of the plate rolling machine is too high. 2. The plate rolling machine emits white smoke. 3. Severe vibration occurs. 4. The noise increases suddenly or abnormal noise occurs.

Because of the different fields of use, the types of bending machines are also different. From the number of rolls, it is divided into three-roller and four-roller. The 3 roll bending machine is divided into the symmetrical three-roller bending machine, horizontal downward-adjusting three-roller bending machine, arc-downward-adjusting plate bending machine, upper-roller universal three-roller bending machine, and hydraulic CNC bending machine. From the transmission point of the mechanical type and hydraulic type. In terms of the development of plate bending machines, the upper roll universal type is the most backward, the arc downward adjustment type is slightly advanced, and the horizontal downward adjustment type is the most advanced. The three-roller bending machine has 1, mechanical type and 2, hydraulic type 1. The mechanical three-roller bending machine is divided into symmetrical and asymmetrical. Mechanical three-roller symmetry Performance characteristics of mechanical three-roller symmetrical plate bending machine: The structure of the machine is three-roller symmetrical. Rotational motion, through the output gear of the reducer meshing with the lower roller gear, provides torque for the rolled plate. The disadvantage of this machine is that the end of the plate needs to be pre-bent with the help of other equipment. Mechanical three-roll asymmetrical The main features of the mechanical three-roll asymmetrical plate bending machine: the structure of the machine is a three-roll asymmetrical type, the upper roller is mainly driven, and the lower roller moves vertically to clamp the plate and mesh with the upper roller gear through the lower roller gear, At the same time as the main drive; the side rollers are tilted and lifted, with the dual functions of pre-bending and rounding. Compact structure, convenient operation, and maintenance. 2. Hydraulic type The main features of the hydraulic three-roller symmetrical plate bending machine: The upper roller can be vertically lifted, and the vertical lifting hydraulic transmission is obtained by the hydraulic oil in the hydraulic cylinder acting on the piston rod; the lower roller is driven by rotation, and the output gear of the reducer meshes. Provide torque for the coil, and there is a supporting roller under the lower roller, which can be adjusted. The upper roller is in the shape of a drum, which improves the straightness of the product and is suitable for ultra-long tanks with various cross-sectional shapes. It is an upward-adjusting symmetrical three-roller plate rolling machine, which can roll metal sheets into circular, arc-shaped, and conical workpieces within a certain range. The two lower rollers of this model are the driving rollers and the upper roller is the driven roller. It is widely used in shipbuilding, boiler, aviation, hydropower, chemical, metal structure, and machinery manufacturing industries. It is suitable for bending and deformation of metal plates. It can roll around, arc, and tapered workpieces within a certain range, and has the function of pre-bending the end of the plate. The two lower rollers of this model are active rollers that can move horizontally. The roller is a driven roller that can move up and down. There are mechanical and hydraulic movement modes. The driveshafts are all connected by universal couplings.

This wheel press machine from EZHONG wheel press machine manufacturer is suitable for metallurgy, mine machine repair, machine manufacturing and large motor manufacturing, mainly used for large shaft parts of the pressure assembly and disassembly work.

• EZHONG plate leveling machine is composed of the frame assembly, work rolls, support rolls, stop wheel devices, movable beams, lower beams, lower corner mechanisms, balance devices, displacement sensing devices, main transmission devices, dry oil lubrication systems, and electrical control system and other parts. • The upper and lower rollers of the main drive system are fully driven by two motors, which can be braked for emergency stop and have a soft start device, which has a small impact on the power grid, reliable performance, low noise, and compact structure. • The upper and lower support rollers are supported by multiple rows of multiple diameters and are arranged in a chess pattern with the work rolls. The bottom is equipped with an integral inclined iron adjustment mechanism. Manual fine-tuning is used to adjust the shape of the upper and lower leveling rollers to maintain the rigidity of the work rolls and level the waves of the thin plate. When the convex and concave buckle is deformed, it is necessary to use the support roller to change the convexity of the work roll, and manually adjust the opening amount and inclination angle of the upper leveling roller, which can easily adapt to the correction requirements of wave bending and scoop-shaped plates. • The work roll journals all adopt the self-aligning needle roller bearings dedicated to the rolling mill. Compared with the copper sleeve, the transmission efficiency is high, the service life is long, the friction resistance of the work roll is small, the non-slip condition is greatly improved, and the thinner steel plate can be straightened. • Adopt a closed frame, the corrective force is enclosed inside, the frame appearance is simple, the overall rigidity is good, and the foundation can be fully loaded and leveled. • The depressing corner mechanism and the corner mechanism are combined together, using group technology, using two sets of the same power system, driven by a YEJ type motor, so that the movable beam can be accurately and automatically positioned and quickly swiveled.

EZHONG is a professional press machine manufacturer. At present, China's largest horizontal axle press machine is manufactured by EZHONG. EZHONG's horizontal axle press machine and single-arm hydraulic press machine have absorbed the advanced technology from Germany and Japan. They are machines with EZHONG's independent intellectual property rights and have a strong technical force. Our forging press machines are widely used in railway locomotives, metallurgy, iron and steel, mining, machine repair, machine manufacturing, and large-scale motor manufacturing industries. EZHONG compression machines have a wide range of uses, high production efficiency, and high safety systems.

Sheet metal forming machine is the process of applying pressure on the sheet metal to permanently deform the material. EZHONG has more than 60 years of design and manufacturing history, specializing in the production of metal forming machine such as plate bending machine, plate leveling machine, bending press machine, and profile bending machine . Mainly based on plate rolling machines and plate leveling machines, with thousands of users, it has manufactured China's largest plate rolling machines and plate leveling machines. At present, the technology of EZHONG Machinery keeps pace with the technology of European countries.

Understand sheet metal leveler Sheet metal is used in the most diverse industrial sectors. Whether it is construction machinery manufacturers, stainless steel and precious metal processing companies, contract manufacturers with laser punching machines, or flame cutting, flame cutting, and plasma cutting experts, they all use sheet metal every day and rely on the flattest parts. In particular, contract manufacturers use a range of products that are usually difficult to plan. The sheet metal they process usually has highly different characteristics. Therefore, the straightening machine needs to be able to handle variable and very specific requirements. In order to maintain time and cost efficiency under all other requirements, what should be paid attention to when purchasing sheet metal leveler? Tips for choosing sheet metal leveler When choosing a sheet metal leveler, always pay attention to user-friendliness. This is also the case in terms of maintenance. The quick change system used for straightening rolls and support rolls significantly enhances and accelerates cleaning. Block feed, hydraulic clearance control, or good machine support are all factors that ensure user-friendly machines. For example, for block feed, machine operators only need to configure two settings. This will reduce the work and effort involved in learning how to operate the machine to a minimum. The operator's operation of the sheet metal leveler is also one aspect that ensures that the straightening machine is well protected to prevent damage. Hydraulics represent the most reliable method for straightening machines. If operators know they can operate the machine to the limit without any worries, they can achieve the best results with the machine. Today, an intuitive human-machine interface is essential. Modern control systems have integrated operation aids, tool storage, barcode scanners, and maintenance plans. In many cases, the integrated automatic leveling system of the machine settings can be automatically suggested using robots. In choosing the right sheet metal leveler, training is another standard that cannot be ignored. Well-trained operators quickly demonstrate their value through higher process reliability. That's why a competent manufacturer should also offer training and seminars as part of its on-site support. Generally, the sheet metal leveler supplier must provide support and assistance throughout the entire life cycle of the new system, including production support. Fast and reliable service is essential in manufacturing because it can ensure maximum availability. That's why you should check if 24-hour service is provided, including on-site support for machine repair, spare parts, or maintenance.

The rolling machine is an equipment that uses working rollers to bend and form sheet metal parts, and can shape cylindrical parts, conical parts, and other different shapes. It is a very important processing equipment. The working principle of the rolling machine is to make the working roller move through external forces such as hydraulic and mechanical transmission power, causing the sheet metal to bend or bend into shape. According to the different shapes of the working roller rotation and position changes, elliptical parts, arc parts, cylindrical parts and other parts can be processed. The most commonly used is the 3 roller plate bending machine, which can be mechanical or hydraulic. The mechanical 3 roller plate bending machine is divided into symmetric and asymmetric. It can roll metal sheets into circular, arc and tapered workpieces. The working principle of the 3 roller plate bending machine The upper roller moves up and down vertically through the hydraulic oil inside the hydraulic cylinder acting on the piston, and the main reducer's final stage gear drives and controls the upper roller movement. The metal sheet passes through the three working rollers of the rolling machine (two lower rollers and one upper roller), relying on the pressure of the upper roller and the rotation of the lower roller to make the metal sheet undergo multiple continuous bending and permanent plastic deformation, rolling into the required shape. The disadvantage of the wave pressure 3 roller plate bending machine is that it needs to rely on other equipment to pre-bend the edge of the plate. Learn how the 3 roller plate bending machine rolls the cone When using the rolling machine to manufacture conical workpieces, it is important to adopt the correct method and related skills, otherwise rolling failure may easily occur, and even cause machine damage. The 3 roller plate bending machine is a sheet continuous point bending machine, which can roll metal sheets into circular, arc, and conical workpieces within a certain range. So how does the rolling machine roll cones? First of all, the conical structure is composed of many circles from top to bottom and from small to large, and the circumference of the circle becomes longer from the small end to the large end. Generally, the rolling machine can roll cones with small taper (30 degrees). The tapered cylinder is unfolded and rolled into a circle. The key to rolling cones is that the linear velocity of the large end and the small end are basically the same. Because the linear velocity of the rolling element is the same, the rolling speed of the large end should be controlled. It can be seen that the operator's skills and operation requirements are very high and also quite dangerous. Therefore, for safer and more convenient use, it is recommended to use conical rollers when rolling conical cylinders. Using a conical support roller, the upper support roller does not need to control the inner and outer end speeds, and using this structure can easily complete the work.

Even with the use of the latest technology, flat defects and internal stresses cannot be avoided during the manufacturing process of quenched and tempered plates. Therefore, it is necessary to use a plate straightening machine after heat treatment while reducing internal stress. Understanding plate straightening machines Plate straightening machines are usually used for straightening thin and heavy gauge materials. They typically have separate roll controls (position/force) and separate roll drives. Through closed-loop positioning control, it allows for recipe setups for running production machines in normal plate. Plate straightening machines are most commonly used for flatness correction on thin or heavy gauge materials. Typically, they have separate roll drives and separate roll controls. Closed-loop positioning allows the straighten machine to set up recipes for running production machines in normal plate. Using a plate straightening machine, uniform correction can be maintained for the area where the front and back edges straighten with violent fluctuations, or a constant area can be achieved. They can also reduce any residual stress in the steel plate. This allows for the production of steel plates that do not deform after cutting. Typically, plate straightening machines are equipped with block hydraulic adjustment systems, or devices for separately adjusting the upper and lower straightening rolls. Choosing the straighten machine The demand for stronger and stronger plates will continue to rise in the coming years. When choosing the right straighten machine for the job, some important factors need to be considered. These include roll diameter, roll gap, and number of work rolls. The work rolls can also be backed up to achieve more precise flatness and zone control. The closer the roll gap, the smaller the straightening roll diameter, the better the effect; depending on material thickness and throughput. Straighten machines are superior to leveling machines, as they remove not only crossbows or coil sets. High-speed manufacturing, such as stamping, burning, and shearing, relies on flat materials to increase yield and prevent machine damage. Therefore, many manufacturers have very strict quality requirements for their suppliers. Flattening materials is all about the difference between "elastic" and "plastic" deformation. Materials that undergo elastic deformation will spring back to their original shape, while plastic deformation means the material is permanently bent. Therefore, the goal of straightening machines is to plastic bend the material and restore it to a completely flat shape. The customization capability of straightening materials is based on the machine's roll configuration. Specifically, the work rolls of the straighten machine bend the material within its radius range, so the machine can flatten the material. The straightening machine's roll diameter, roll center, and roll penetration depth primarily determine the machine's capability. Depending on the material thickness, width, and yield strength to be processed, several standard types of straighten machines can provide help.

Use the contact form on https://www.ezheavy.com/contact/ or email sales contact via /contact. Include technical plate data, destination country, and timeline. Phone contact published with company materials includes +86-13929593079.

Typical industries include wind energy tower manufacturing, pressure vessels and boilers, shipbuilding, steel construction, petrochemical fabrication, and related heavy industrial metal forming. Application pages on ezheavy.com map equipment families to these sectors.

Published examples list leveling accuracy on the order of about 1.0 mm/m² to 1.0–1.5 mm/m² depending on model page, together with width and yield limits. Real results depend on incoming plate condition and setup. Request a process trial definition in the contract for critical flatness jobs.

Yes for core plate rolling and leveling lines discussed on the English site. CNC features typically include position sensing, automatic leveling of roll lift, and screen display of displacements. Exact control configuration is model- and order-specific.

Long, relatively thinner tank shells often map to EZHONG tank plate rolling machines (W11NC series examples from about 5–16 mm thickness and 6000–9500 mm width). Thicker pressure shells may need standard heavy 3-roll or 4-roll CNC plate rolls instead.

Pre-bending forms the plate ends so the finished shell has minimal flat sections at the weld seam. 4-roll machines are often preferred for efficient end pre-bending; 3-roll processes can also pre-bend with proper sequences. Specify allowable straight-edge length in your RFQ.

Manufacturer materials for EZHONG wind-tower systems state that a full coiling system can be operated by a single trained operator with console and remote controls, subject to safety procedures and plant practice. Labor needs still depend on crane support, welding flow, and site HSE rules.

Capacity tables are usually based on a reference yield strength. Higher yield materials need more force and effectively reduce the maximum thickness a machine can roll. Always pair thickness and width with MPa yield (and temperature if hot rolling/leveling) when comparing models.

Verify remaining roll condition, real thickness/width capacity at your yield strength, pre-bend performance, hydraulic leakage, CNC/PLC status, safety interlocks, and available history. Ask for an inspection list and, if needed, refurbishment scope. EZHONG can discuss second-hand inventory or recommend a new machine when used stock is not suitable.

Published company figures describe a campus of about 200,000 m² with 800+ main equipment sets and more than 600 employees, including a large engineering team. These figures support production of heavy CNC plate rolls and levelers for export.

Manufacturing is based in Ezhou City, Hubei Province, China. The published address is NO.1, Sihai Avenue, Ezhou City, Hubei Province, China. The international product website is ezheavy.com (Ezheavy brand presentation for global buyers).

Yes. Company profile data lists exports to 30+ countries and regions. Overseas projects can include FAT, export packing for oversized cargo, and installation guidance. Provide destination country and site constraints early in the inquiry.

A horizontal axle (wheel) press is used to cold-press rolling bearings onto railway wheel journals and to press-fit or disassemble large shaft components. EZHONG publishes an example model EZY92-3150KN with 3150 kN nominal pressure, 600 mm stroke, and 0–4 mm/s pressing speed. It is also used in metallurgy and large motor manufacturing contexts.

Prioritize nominal force, working pressure, stroke, opening height, table size, speed, control mode (fixed stroke vs fixed pressure), and safety protection. An EZHONG published 500T-class example lists 25 MPa working pressure, 800 mm stroke, 1600 mm opening, 10–15 mm/s pressing speed, and 44 kW motor power. Always size force to the real process, not only the nameplate tonnage.

W43T/EZW43T focuses on medium and heavy plate with patented sub-roller drive and CNC pressing calculation. W43B emphasizes multi-roll layouts (for example six upper and seven lower rolls) with fine gap adjustment. W43C emphasizes full upper/lower drive, multi-row supports, and correction of thin-to-medium plate distortion. Selection is driven by thickness, width, yield, and defect type—not name alone.

Confirm max thickness, max width, material yield strength, target flatness, and whether plates are high-strength or composite. EZHONG W43T/EZW43T models target medium/heavy plate; published examples include roughly 40×3000 mm and 80×3000 mm classes, with larger reference units such as EZW43T-120×3000 mm (400 MPa). Match roller count and stiffness to your defect types (wave, scoop, residual stress).

On EZHONG CNC 3-roll systems, upper-roll lift is computer-controlled with automatic leveling and screen display. A synchronization accuracy around ±0.2 mm means the controlled ends of the lift motion stay closely matched, which helps rolling consistency. Final workpiece accuracy still depends on material, operator setup, and multi-pass strategy.

For closed cylinders, cones, and continuous large-radius shells, a plate rolling machine is usually the correct process. Press brakes excel at discrete bends and polygonal approximations. If your drawing is a true cylinder/cone from heavy plate, start with plate rolls; if it is a multi-bend polygonal section, evaluate press-brake tooling instead.

FAT (Factory Acceptance Testing) is on-site testing at the manufacturer before shipment. For heavy plate rolls and levelers, FAT typically verifies motions, safety interlocks, basic rolling/leveling demonstrations agreed in the contract, and documentation packages. Scope should be written into the purchase agreement for export projects.

Send maximum and typical plate thickness and width, material grade or yield strength (MPa), finished diameters or cone geometry, pre-bend requirements, estimated annual volume, destination country, and any FAT or installation constraints. Photos of current process issues also help. Use the contact form on ezheavy.com to start.

It depends on model and material yield strength. Published EZHONG examples range from lighter models around 20 mm class up to heavy 3-roll examples in the 160–270 mm class (without pre-bending figures on specific models). Higher yield steels require derating. Provide thickness, width, and MPa yield for a confirmed capacity statement.

Yes. Wind-tower and heavy 3-roll machines support cone rolling with lower-roll geometry adjustment and cone-stopper arrangements. Manufacturer materials commonly reference general cone angles around 30° at reduced load (about 50% of full load on some designs). Always confirm cone angle, plate thickness, and yield strength for your drawing set.

Choose a 4-roll machine when end pre-bending productivity and shorter operator ramp-up are critical. Choose a heavy CNC 3-roll variable-geometry machine when you need maximum thickness flexibility, independent lower-roll center-distance adjustment, or wide cone capability. Share thickness, width, yield strength, diameter, and pre-bend requirements so EZHONG can compare both families on your plate list.

EZHONG is the primary industrial brand of Hubei Heavy Industry Equipment Co., Ltd., a heavy plate forming equipment manufacturer founded in 1958 in Ezhou, Hubei, China. Ezheavy (ezheavy.com) is the international website brand for the same manufacturer. Core products include CNC plate rolling/bending machines (3-roll and 4-roll), plate leveling machines (W43 series), hydraulic presses, horizontal axle presses, and selected second-hand machines for export projects.