Purlins carry roof and wall panels in steel buildings. C sections work as simply supported members on single spans, and Z sections can be lapped into continuous spans over several frames. Tell us the purlin schedule of your project, and we will configure the line to match it.
Large-span workshop frames need straight, accurate purlins in long production runs. Cut-to-length control keeps site trimming low, so installation on the frame goes faster.
Distribution centers use wide clear spans and big roof areas. Z purlins lapped into continuous spans carry the roof with less steel, and one machine covers the full purlin schedule of the building.
Farm sheds, storage barns and livestock buildings are cost-sensitive projects. Galvanized C sections formed to length give contractors a simple, durable roof structure at a controlled cost.
Supermarkets, showrooms and office blocks mix several purlin sizes in one project. One-click size switching lets a producer serve these orders without long changeover between specifications.
C, Z and U sections are widely used as rails and supports in PV mounting structures. High-volume orders suit a fully automatic line with servo punching and optional palletizing.
Wuxi Tonghe Machinery manufactures cold roll forming equipment in Wuxi, China. Since 2011, the company has built CZ purlin machines, PV bracket lines, guardrail lines, cable tray lines and custom profile lines for customers in over 30 countries. The factory covers about 30,000 m² and employs 200+ staff, including a 50+ R&D team. Production is ISO9001 certified and products carry CE marking.
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Yes. One line covers C, Z and U sections. Changeover between C and Z profiles is automatic from the PLC, and the rollers stay on the machine. You do not need a second line or a roller swap to switch profile types. U channels from the same line are typically used as eaves struts and edge members around openings in the same buildings.
The standard range is from one point five to four millimeters, depending on the model and configuration. Send us your strip thickness and material grade, and we will confirm the matching roller and frame specification.
Sizes switch on the PLC touch screen with one click. Web height, flange width and punching positions are saved as recipes, so repeat orders restart without setting the machine again.
A typical line combines a decoiler, leveling unit, servo punching, roll forming stations, hydraulic cutting and a run-out table. Automatic palletizing is available as an option. The final configuration follows your product and output requirements.
Section dimensions are customized to your drawings. A common range covers purlin web widths from eighty to three hundred millimeters, with lip and flange sizes set during tooling design.
Send the section drawing with dimensions and thickness, the hole pattern, the material grade and your target speed and voltage. If you do not have a drawing yet, we can recommend a specification that is common in your market.
Yes. We dispatch engineers for on-site installation, commissioning and operator training, and remote video support is available after handover. Warranty runs twelve months on the main machine and eighteen months on core components, with free spare parts during the warranty period.
A cz purlin machine looks similar across suppliers, but the differences that affect your production sit in a few specific places. This guide goes through the points worth checking before you compare quotations.
Steel structure projects usually need both C and Z purlins. C sections work as simply supported members on single spans, while Z sections lap over the supports and form continuous spans that use less steel on multi-span frames. A combined c&z purlin forming machine produces both profiles on one roller set, with the changeover handled from the PLC. Two separate machines mean double the floor space, double the operators and a second set of tooling to maintain. The same line also forms U channels, which serve as eaves struts, edge members and framing around openings in steel buildings, so one machine covers the full section schedule of a project. For most purlin producers, a one-machine line with automatic changeover is the practical choice.
Purlin strip thickness in steel construction commonly runs from one point five to four millimeters, in galvanized or black steel. Confirm that the machine you are quoted is built for your actual thickness range, because the frame rigidity, roller diameter and motor power all follow from it. Rollers machined from Cr12 tool steel hold their profile accuracy over long production runs and resist wear on galvanized surfaces. Forming speed on THRONCH CZ lines runs from twenty to thirty-eight meters per minute depending on the model and the section being produced.
Manual size change means adjusting rollers and spacers by hand, which can take hours and depends on operator skill. A c and z purlin machine with one-click size switching stores each specification as a recipe: web height, flange width and punching positions all move to the saved values. If your order book mixes many purlin sizes per week, changeover time decides how much of your shift is spent producing instead of setting up.
Purlins need bolt holes at positions that follow the building design. Servo punching to your hole pattern, set from the PLC together with the length, keeps the holes in the right place on every piece. Hydraulic cutting gives a clean end without distortion. If you produce at high speed or supply large projects, an automatic palletizing unit removes the manual stacking bottleneck at the end of the line.
Prepare the section drawing with all dimensions and thickness, the hole pattern, the material grade, and your target speed and voltage. With these five items, a z purlin roll forming machine or combined cz line can be specified correctly the first time: roller station count, motor power, punching unit and cutting type all follow from your product data. If your project uses a regional standard section, send the standard number and we will match the tooling to it.
We're THRONCH, a direct factory in Wuxi, China, building custom roll forming lines for purlins, highway guardrail, cable tray, strut channel, and welded tube. Send us your profile drawing and get a line proposal within 24 hours.
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