Are you looking for a CZ purlin roll forming machine that can switch between C and Z sections without stripping the whole roll train? Do you want to find a manufacturer whose changeover figure survives a first-article check instead of living only in a brochure? Or are you hoping to work with a partner who can match a specific purlin schedule, steel grade and hole pattern for your steel building projects?
If the answer is yes, then the global roll forming equipment market offers a very wide spread of options. These range from high-volume Western purlin mills with long service histories to Chinese CZ purlin roll forming machine builders that combine automatic C/Z changeover with much shorter delivery times. Purlin equipment manufacturing is concentrated in a small number of regions. The practical differences between suppliers rarely appear on a specification sheet. They show up in roller quality, in how much of your purlin schedule the punch tooling actually covers, and in how honestly changeover time is quoted. Below, we present ten manufacturers worth comparing, together with the questions that separate a workable shortlist from an expensive mistake.
Quick Navigation
- The Bradbury Group
- Formetal Technology
- Xiamen Zheng Liming Metallurgical Machinery
- Xiamen BMS Group
- Hayes International
- Gasparini S.p.A.
- Wuxi Tonghe Machinery (THRONCH)
- Frametec (Xiamen) Building Technology
- Willing Int'l
- Hebei Liming Stamping Form Machine
1. The Bradbury Group
https://www.bradburygroup.com/
Headquarters / Supply Model: Based in Moundridge, Kansas, United States. The group designs and builds roll forming and coil processing equipment in-house and sells directly, with group brands covering panel lines, purlin lines, trim equipment and controls. It is a manufacturer and system integrator, not a trading company.
Core Products / Technologies: A dedicated Purlin Rollforming Equipment line, described by the company as being built for any production requirement and investment level, from start-up producers to high-volume manufacturers needing extra throughput and automation. The wider metal building range covers pre-cut and post-cut panel lines with flying or stop-to-cut shears, trim shop equipment, standing seam rollformers, portable rollformers, coil processing and in-house controls. The group also owns the Hayes purlin mill range, so both a North American and a New Zealand build route sit under one organization.
Why Consider The Bradbury Group: Very few suppliers can quote a complete metal building plant from a single engineering source: purlin line, panel line, trim equipment and controls. Fewer still back it with a domestic service network and a published in-stock equipment program for shorter delivery. If your project is a greenfield building-products factory rather than a single machine replacement, consolidating the specification with one integrator removes a lot of interface risk.
Best Suited For: Metal building manufacturers in North America planning a full coil-to-building plant, and established producers replacing a line where local service response and spare-part availability matter more than the lowest capital cost. Buyers with a single, narrow purlin range may find a smaller specialist better value.
Before Purchasing: Confirm whether pre-punching and flying shear are standard or optional on the purlin line you are quoted. Ask which rollformer architecture is being proposed for your section range, and request the roll tooling drawings plus a clear statement of who owns that tooling. Check the quoted lead time against the current in-stock list, and ask whether Hayes quick-change technology is available on the specific model under discussion.
2. Formetal Technology
Headquarters / Supply Model: China-based manufacturer and exporter of cold roll forming lines. CZ purlin equipment is treated as a core product family in its own right rather than an add-on to a roofing-sheet catalog, and machines are supplied direct from the factory with export documentation and commissioning support.
Core Products / Technologies: Separate product lines for automatic C purlin, automatic Z purlin, combined CZ purlin and high-speed CZ purlin machines. The CZ purlin roll forming machine range is presented by purlin type rather than as one generic model, alongside C channel lines and the wider roll forming machine catalog. The range is documented by purlin type and by changeover method, which makes it easier to match a machine to an actual purlin schedule instead of a generic "C and Z" claim. Published material discusses the changeover sequence, punching arrangement and cut-off system rather than only tonnage and line speed.
Why Consider Formetal Technology: The catalog is organized around the decision buyers actually face — one flexible CZ line or two dedicated C and Z lines — and that framing is more useful than a single headline model. For plants where the number of size changes per shift, not the maximum running speed, determines real output, a supplier that documents changeover as a process is easier to hold to a performance figure. The technical blog is a practical place to test that claim before shortlisting, because it shows how the engineering team explains the problem rather than only how it sells the machine.
Best Suited For: Steel building and purlin suppliers running mixed C/Z schedules with frequent section changes, and buyers who want the changeover question answered in the quotation rather than discovered at commissioning. Very high-volume single-section producers may still be better served by a dedicated line.
Before Purchasing: Ask for an unedited factory acceptance test video of a real C-to-Z size change with a visible timer. Confirm that punch tooling covers every web height in your schedule, because partial coverage quietly pushes holes into a secondary drilling operation. Ask what first-article tolerance is achieved after a change and how many pieces are scrapped before the line is back in tolerance, and request the recommended spare roller and punch inventory for your mix.
3. Xiamen Zheng Liming Metallurgical Machinery Co., Ltd.
Headquarters / Supply Model: Tong'an District, Xiamen, China, with a production base stated at more than 100,000 m². Manufacturer with in-house research, machining and assembly; the company dates its founding to 1989 and describes itself as a national high-tech enterprise and a national standard maker.
Core Products / Technologies: Cold roll forming machines across steel structure and construction, container, new energy and photovoltaic, storage rack and transport applications. The purlin side covers CZ purlin machines in the CZ-300 class and Z purlin models extending to the Z100-350 range, and the company states more than 140 core technology patents, including invention patents and utility models. Custom profile development is offered alongside catalog models.
Why Consider Xiamen Zheng Liming: It is one of the longest-established roll forming builders in China. Patent depth, a single very large site and a stated role in national standard work are useful signals when you need a profile that does not match a standard catalog drawing. Longevity also means older installations exist that can be inspected rather than only described.
Best Suited For: Buyers who need genuine engineering customization on the section itself, or who want a Chinese OEM with a record long enough to be checked against machines already in service in their region. Pure commodity buyers comparing on price alone will usually find cheaper options.
Before Purchasing: Confirm exactly which model is quoted and whether C/Z switching is automatic or requires spacer and shaft changes, because the two are frequently conflated in conversation. Ask for the roller material specification and heat treatment process in writing, request references from your own region, and confirm who supplies the PLC, servo drives and hydraulic components.
4. Xiamen BMS Group
Headquarters / Supply Model: Xiamen, China. A manufacturer group that states it was established in 1996 and operates several factories, with around 30,000 m² of production space, roughly 200 production staff and multiple machining centers across the group. Equipment is sold direct and through export channels.
Core Products / Technologies: Auto C&Z purlin machines including a C75-300 automatic purlin model, purlin rollforming lines, and a broad light-gauge range covering floor decking, stud and track, guardrail, standing seam and slitting or cut-to-length equipment. The company states ISO 9001 certification and European CE certification issued through SGS, and reports machines exported to more than 80 countries.
Why Consider Xiamen BMS Group: The breadth is the point: a buyer equipping a whole light-gauge plant can source purlin, decking, stud and track and coil processing from one group instead of managing four suppliers. The CE documentation is a practical advantage for anyone who has to place the line in a regulated market and prove conformity at import.
Best Suited For: First-time importers and distributors who want a documented, export-experienced supplier, and plants that need several machine types rather than a single purlin line. Buyers who want one dedicated specialist team per machine should confirm the factory split first.
Before Purchasing: Ask which factory in the group will build your purlin line and have that written into the contract, since a group structure can mean several different production sites. Check that the CE certificate scope covers the exact model rather than only the company, confirm warranty terms including who pays for parts and labor, and request the full electrical drawing package with voltage and frequency agreed before shipment.
5. Hayes International
Headquarters / Supply Model: Rotorua, New Zealand, with a manufacturing facility and a workforce stated at around 90 people. Hayes designs and builds rollformers in New Zealand and is part of The Bradbury Group; machines are supported in more than 90 countries.
Core Products / Technologies: Purlin Mills and Panel Mills plus custom machinery. The purlin range includes the Hayes Quick Change™ Purlin Rollformer and the Single-Level™ and Dual-Level™ rollformer architectures, and the company states more than 60 years of rollforming manufacture. Custom builds are offered where a standard mill does not fit the profile.
Why Consider Hayes International: Heavy, long-life machine construction with a genuine quick-change purlin heritage, from a supplier small enough to engineer around your profile rather than only sell from a list. For buyers who want Western build quality without taking on a full plant integrator, it sits in a useful middle position.
Best Suited For: Purlin producers in Australasia and North America, and buyers who prefer a mechanically straightforward, serviceable rollformer over a heavily automated line. Note that because Hayes sits inside The Bradbury Group, the two entries in this list share an ownership structure and should not be treated as unrelated alternatives.
Before Purchasing: Confirm the current ownership and service route so that warranty and spare parts are routed correctly. Ask which purlin sections the quoted mill covers and whether C and Z are produced on the same roll set or require a tooling change. Budget for shipping and commissioning from New Zealand, which can be a material share of total cost, and confirm electrical standards for your site.
6. Gasparini S.p.A.
https://www.gasparini-spa.com/
Headquarters / Supply Model: Mirano, Italy, roughly 20 km from Venice, with around 120 staff and an ISO 9001 certified quality management system. Manufacturer of custom roll forming lines and integrated sheet metal processing systems, sold as turnkey installations.
Core Products / Technologies: Custom roll forming lines handling material from 0.2 mm up to 12 mm thick. For structural work the company states that a single line can produce U, C, Z, Omega and Sigma sections without changing the roll sets. Punching, clinching, cutting, bending, welding, handling, stacking and packing are integrated, coordinated by Gasparini control software intended to shorten setup. The installed base is stated at around 1,500 companies in 35 countries.
Why Consider Gasparini S.p.A.: This is the heavy end of the market. Most CZ purlin machines are engineered for light-gauge cladding support and stop well below 4 mm; a line built for thicker sections and integrated secondary operations changes what a fabricator can quote and which projects it can enter. The same-line multi-section capability is also a different answer to the changeover problem than a rotating carrier.
Best Suited For: Structural steel fabricators and high-specification purlin producers needing heavy gauge, tight tolerances, ERP connectivity and a complete line rather than a standalone machine. Buyers with a simple light-gauge schedule will usually find the investment hard to justify.
Before Purchasing: Confirm that the proposal is purlin-specific rather than a general structural profile line adapted to the task. Ask how section changeover is sequenced on your configuration and what the documented time is, clarify the software and ERP integration scope, and plan for a longer lead time than a catalog machine, since custom lines are engineered per order.
7. Wuxi Tonghe Machinery Co., Ltd. (THRONCH)
Headquarters / Supply Model: Wuxi, Jiangsu, China. Manufacturer that states it has built cold roll forming equipment since 2011, with a factory of roughly 30,000 m² and more than 200 staff, handling machining, assembly, wiring, testing and pre-shipment inspection in-house. CE and ISO 9001 certified, with exports to more than 30 countries.
Core Products / Technologies: A CZ purlin machine built around one-click C, Z and U changeover on the PLC with stored recipes for repeat orders, servo punching and cutting to drawing, and a heavy-duty frame matched to material and thickness. Separate C purlin, Z purlin and U purlin machines are also offered, alongside photovoltaic bracket, strut, guardrail, cable tray and pipe forming lines.
Why Consider Wuxi Tonghe: Changeover is treated as the design center rather than a bullet point. Recipe storage for repeat orders is exactly what a plant running many purlin specifications per shift needs, and the company is specific about its own manufacturing scope — machining, assembly and testing all in Wuxi — which makes the quality claim easier to audit.
Best Suited For: Steel structure and photovoltaic mounting producers with high section variety and relatively short runs, and buyers who prefer a mid-sized specialist to a large multi-product group. Very large single-section volumes may favor a simpler dedicated machine.
Before Purchasing: Confirm the thickness range the proposed frame actually handles rather than the widest figure in the catalog. Ask for punch tonnage and whether pre-punch and post-cut are both included, check whether the U profile is standard or an option on your model, and request the factory acceptance test checklist and a sample of the recipe structure you will receive.
8. Frametec (Xiamen) Building Technology Co., Ltd.
https://www.frametecbuilding.com/
Headquarters / Supply Model: Xiamen, China, with a factory and warehouse stated at more than 40,000 m². Manufacturer of roll forming equipment for light steel frame and cold-formed steel construction, with a separate building materials department added in 2019.
Core Products / Technologies: CZ purlin machines are sold as named models: the Automatic C/Z Purlin Interchangeable Roll Former FF80-350, the FN80-300 and the Automatic C/Z Purlin Roll Forming Machine FX350. The company also builds light steel frame machines such as the SF89 and LG-10, and supplies a materials range covering roofing, gutter, wall cladding and floor systems.
Why Consider Frametec: Model naming is tied to the web-height range, which makes specification comparison unusually straightforward: FF80-350 tells you the intended span before you open a single PDF. The company can also supply the framing machines and building materials that sit around a purlin line, which matters if you are setting up a light-gauge plant from nothing.
Best Suited For: Light-gauge steel framing producers and small building-material suppliers who want a purlin line plus surrounding equipment from one source. Buyers needing heavy gauge or deep engineering customization should look at the larger specialists.
Before Purchasing: Confirm what "interchangeable" means on your specific model, because automatic switching and manual spacer changes differ by a large margin in operator labor. Verify that the FF80-350 really covers your full web-height schedule, ask for the tooling list and whether extra sizes are priced separately, and confirm after-sales response times given the company's smaller service footprint.
9. Willing Int'l
Headquarters / Supply Model: China-based manufacturer and EPC supplier. The company states more than 30 years of roll forming production experience, over 1,000 service customers and 1,500 cold roll forming EPC projects across more than 90 countries, with 63 national patents. Supply model spans single machines, complete lines and turnkey steel structure plants.
Core Products / Technologies: A C & Z Changeable Purlin Machine that the company says switches automatically between sizes and profiles, uses variable-frequency drive control for hole accuracy, includes an automatic correction system for straightness, and uses CNC-machined rollers. The wider range covers step tile, roof sheet and floor deck forming machines, and the EPC side adds workshop design, steel structure supply, raw material sourcing and installation.
Why Consider Willing Int'l: The offer extends past the machine to the building. Buyers constructing a production facility rather than upgrading a single line get one point of responsibility across equipment, materials and erection, which reduces coordination effort considerably in a first project.
Best Suited For: EPC contractors and new entrants setting up a complete steel structure and purlin production plant, particularly where a single supplier is expected to cover machinery, materials and installation. Buyers who only need one machine may be paying for scope they do not use.
Before Purchasing: Ask for the current purlin machine catalog and confirm the specification of the model being offered, since product documentation on the site is updated over time. Request a changeover demonstration rather than a description, ask what the automatic correction system measures and how it is calibrated, and clarify in the contract where machine supply ends and civil or installation work begins.
10. Hebei Liming Stamping Form Machine Co., Ltd.
https://chinaformingmachine.com/
Headquarters / Supply Model: Hebei, China. Manufacturer founded in 1996 that states it operates 11 production workshops and offers live video access to its production lines, with on-site installation engineers available internationally.
Core Products / Technologies: A very wide roll forming catalog that includes C/Z purlin machines and C/U/Z/M/Sigma profile machines, alongside roofing, drywall profile, light gauge steel frame, floor decking, sandwich panel, slitting and cut-to-length lines. The company states galvanized steel processing from 0.2 to 3.0 mm and lists partners across Europe, South America, Africa, the Middle East and Asia.
Why Consider Hebei Liming: Breadth. A buyer who needs purlins plus several other profiles can qualify one factory instead of five, and the live video access is a practical answer to the usual worry about verifying a Chinese workshop before the first order.
Best Suited For: Distributors and multi-product building material producers buying several machine types at once, who value catalog width and a single commercial relationship over deep specialization in purlin equipment.
Before Purchasing: Confirm which workshop builds the purlin line and ask to see that specific line on a live call rather than a general factory tour. Check the thickness range against your heaviest section instead of the general 0.2–3.0 mm figure, ask whether C/Z changeover is automatic or manual on the quoted model, and get the installation and training scope in writing, including who covers travel and accommodation.
Key Factors That Affect Your Price
Two CZ purlin roll forming machines quoted at very different prices are rarely the same machine with a different margin. The gap is usually explained by five or six configuration decisions, and it is worth pricing each one explicitly before you compare totals.
- Changeover architecture: A manual spacer-and-shaft arrangement is the cheapest way to make C and Z sections and the most expensive in labor over five years. A rotating carrier or cassette system costs more up front and pays back in proportion to how many size changes you actually run per shift.
- Punch tooling coverage: Pre-punching only saves money if the tooling covers your full web-height and hole-pattern schedule. Partial coverage turns a "pre-punched" line into a line with a secondary drilling operation attached, and that cost rarely appears in the quotation.
- Roller material and heat treatment: Roller grade, hardness and grinding quality set both profile tolerance and tooling life. Ask for the material specification and the hardness figure rather than accepting "high-quality bearing steel" as an answer.
- Gauge and section range: A frame stiff enough for 3 mm at 350 mm web is a different structure from one built for 1.5 mm at 200 mm. Buying range you never use adds cost; buying too little range cannot be fixed later.
- Automation and line length: Decoiler, leveller, servo feed, flying shear, stacker and PLC level all move the price. Decide which operations you genuinely need automated and which your labor cost makes irrelevant.
- Documentation, certification and commissioning: CE scope, electrical drawings, English manuals, spare parts lists, engineer days on site and training are all priced somewhere. A quote without them is not cheaper, only less complete.
| Configuration decision | Typical effect on price | Question to ask the supplier |
|---|---|---|
| Changeover method | Largest single variable after gauge range | Automatic, cassette or manual spacer change? |
| Punch tooling coverage | Scales with number of sizes covered | Which web heights and hole patterns are included? |
| Roller specification | Moderate, but drives tooling life | Material grade, hardness, grinding method? |
| Gauge and section range | Large, affects frame and drive sizing | Verified thickness at maximum web height? |
| Automation level | Moderate to large | Which operations are manual on this model? |
| Certification and documents | Small to moderate | Does CE scope cover this exact model? |
| Freight and commissioning | Often underestimated | How many engineer days, and who pays travel? |
One further factor sits outside the machine: the cost of getting changeover wrong. If a line needs 40 minutes to move between sections and you run six changes a shift, the lost production is a permanent operating cost that no discount at purchase can recover.
FAQs – CZ Purlin Roll Forming Machines
1. What is the difference between a CZ purlin machine and separate C and Z machines?
A CZ machine produces both C and Z sections on one line, switching between them by rotating or indexing the roll carrier, swapping cassettes, or repositioning spacers and shafts. Two dedicated machines produce one section each and never need changing over, but they double the capital cost and the floor space. A CZ line wins when your order book mixes sections; dedicated lines win when each runs long and rarely changes.
2. How long should a C-to-Z changeover actually take?
It depends entirely on which definition is being used. Repositioning rolls and rotating the carrier on an automatic line can be a two-to-five-minute operation. A complete changeover that also swaps the cutting die, changes punch tooling and runs a first-article check is realistically ten to twelve minutes or more. When a supplier quotes a single number, ask which of those two operations it describes.
3. What thickness range can a CZ purlin roll forming machine handle?
Most light-gauge CZ machines are built for roughly 1.0 to 3.0 mm galvanized or pre-painted coil, with the exact figure depending on web height: the same line will form thinner material at 300 mm web than at 100 mm. Heavy structural lines from European builders extend considerably higher. Always ask for the verified thickness at your maximum web height, not the best-case figure at the smallest section.
4. Is pre-punching worth paying for?
It is worth it when the punch tooling covers the sizes you actually run and your hole patterns are stable. It is not worth it when every order needs a different pattern, because you will be changing punch tooling as often as you change rolls, and the time saving disappears. Compare the cost of the punching station against the labor and floor space of a separate drill line over three years.
5. Can one machine produce C, Z, U and Sigma sections?
Some can, but the claim needs checking. A machine that forms C, Z and U on one roll set is common on modern Chinese lines. Sigma sections usually require additional roll sets or a different stand arrangement, and a supplier offering "C, Z, U, Sigma" may mean four configurations rather than one continuous capability. Ask which profiles share tooling and which require a change.
6. What should be included in a factory acceptance test?
At minimum: a run at your minimum and maximum web height, a run at your thinnest and thickest gauge, a timed C-to-Z changeover, dimensional measurements on the first article after each change, hole position checks against your drawing, and a straightness check on a full-length piece. Record it. A video of a machine running one section at one gauge proves very little about the machine you are buying.
7. What documentation should ship with the machine?
Electrical and hydraulic schematics, a PLC program backup with the password or access level agreed, a spare parts list with part numbers, an operation and maintenance manual in your language, the roll tooling drawings, and a commissioning report. If the PLC backup is withheld, you are dependent on the supplier for every future fault — negotiate access before the deposit, not after.
8. How long is lead time, and what affects it?
Catalog machines from established Chinese builders typically run from a few weeks to a few months depending on configuration, punch tooling and factory loading. Custom lines from European manufacturers take considerably longer because each is engineered to order. Certification requirements, non-standard voltages and buyer-supplied profile drawings all add time, and the most common cause of delay is a purlin schedule that was not finalised before the order was placed.
Who Is the Best CZ Purlin Roll Forming Machine Manufacturer?
There is no single best manufacturer. The right answer depends on how many section changes you run per shift, what gauge and web height your projects demand, whether you need certification for a regulated market, and how much of the plant you are buying at once. A heavy structural fabricator and a light-gauge purlin supplier should not end up with the same shortlist.
Formetal Technology is worth considering when changeover performance is the deciding factor. Its CZ range is organized by purlin type and changeover method, so the quotation can be written around a documented change sequence rather than a headline speed figure. The company also publishes enough technical detail on punching and cut-off for a buyer to test the claims properly. For plants running mixed C/Z schedules with frequent size changes, that focus is more useful than a longer list of optional extras. The company profile sets out the manufacturing base and service scope, the CZ purlin machine page lists the available configurations, and the blog covers the changeover and tooling questions buyers usually raise at quotation stage.
To discuss a project with Formetal Technology, send your purlin schedule with web heights, flange widths and material thickness, the steel grade and coating, and your hole patterns and pre-punch requirements. Add the number of size changes you expect per shift, your target output per hour, the required electrical standard, and your delivery location and timeline. With those details a manufacturer can quote a specific configuration instead of a generic machine.
