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Hat Purlin Machines: Profiles, Applications and Selection
1. Why the search says “purlin”
In steel buildings a hat purlin (also hat channel, omega, Σ-adjacent) is a secondary roof or wall member with a brim on each side. In ceilings the same silhouette is a furring / hat / omega keel. In solar yards it is a strut. Search engines dump all three onto “hat purlin machine.” The roll path, shaft, cut and power are not interchangeable.
This page sorts the inquiry. Ceiling furring (C47 / high-speed furs / Ω63 / Ω100) and C/Z interchange mills have their own encyclopedias.
2. What the section actually looks like
A hat is a web, two webs down, and two brims out — like a top hat in section. Omega is the same family with a rounder or deeper trough. Unequal brims behave like an asymmetric channel: the flower has to sequence the returns or the bar twists. Equal brims can form more like a symmetric C, but the brim still needs stations a plain C does not have.
If the drawing is a C or Z with lips, you are on a purlin mill, not a hat mill. If the drawing is a drywall C stud, you are on a stud mill. Send the PDF.
3. Four jobs that share a hat drawing
| Job | Where it hangs | Typical duty in this catalogue |
|---|---|---|
| Ceiling furring / hat / omega | Grid or cladding secondary | Light gauge (~0.4–0.7 mm class on the furring wiki) |
| Solar strut / PV hat | Module rail or bracket | Heavier, longer run, tracking cut on the named strut line |
| Compact shop hat + U | Small channels, single-phase hall | Twin compact formers, not a 24-pass strut host |
| Structural hat / sigma purlin | PEB roof/wall, heavier section steel | Different family. C/Z interchange ratings stay on the C/Z encyclopedia |
4. Named builds
| Build | Iron | Power / util on that quotation |
|---|---|---|
| C47 furs class (furring wiki) | ~14 stands, φ40, gear drive; ~0.4–0.6 mm; ~15–20 m/min | Main ~4 kW |
| Hat / furr channel tier (same wiki) | ~10 stands on φ40; host envelope ~3800 × 800 × 1400 mm; ~0.4–0.7 mm | Quote from the drawing; C47 ~4 kW is a ceiling mill |
| High-speed C-furs (same wiki) | Separate speed tier | ~0–35 m/min; main ~5.5 kW, hyd ~4 kW, total ~10 kW |
| Hat / solar strut (process library) | Cast arch, 24 passes with cooling, Φ70 GCr15, cast gearbox, servo tracking cut; SRⅡ 38-pass PV panel is a sibling line | Host 22 kW, hyd 5.5 kW; 380 V / 60 Hz; Siemens or Mitsubishi; KO+EN, no Chinese on machine |
| Small hat + U twin compact | U-slide 10 stands + small hat 12 stands, Ø70, 18 mm mid-plate, hyd stop-cut, 3 t simple decoiler, 3 m tables | Each host 5.5 kW + hyd 5.5 kW air-cool; 220 V / 60 Hz / 1φ |
Ω63 (~10 stands / ~3 kW) and Ω100 (~12 stands) sit on the furring wiki as their own rows. They are not the 22 kW strut.
5. What a C/Z purlin mill will not do
A C/Z interchange mill changes web and flange and, on some packages, flips C to Z. The flower is lips and a web, not two brims. Punch patterns for purlin holes do not become hat slots by renaming the HMI recipe.
A drywall C stud mill is closer in gauge to furring than a purlin mill is, and it still needs a different roll path. The furring-vs-stud wiki is the comparison for that fork.
Structural hat / sigma for PEB is the remaining fork. Quote from the drawing: thickness, yield, web, brim, punch, cut (stop vs track). There is no public typical-kW hat table on this page.
6. Send the section, not the keyword
- Finished section (hat / omega / strut / furring) with dimensions
- Thickness and grade; solar vs ceiling vs PEB in one sentence
- Holes / slots / emboss / knurl
- Cut: hydraulic stop-cut vs servo tracking
- Hall power: 1φ 220 V vs 3φ 380 V / 60 Hz vs 50 Hz
- HMI languages (strut quotation: English on that machine, not Chinese)
- Whether a U twin or a wide PV panel line is also in the order
7. Buyer FAQ
Is a hat purlin the same as a C purlin with extra lips?
No. The brim geometry and the flower are different. A C/Z changeover does not grow a hat.
Can the 22 kW strut line run ceiling furring?
Wrong duty. Furring C47 is ~4 kW / φ40. The strut line is a 24-pass gearbox mill with tracking cut. Tooling and speed class do not transfer.
Is hat channel a new product family?
For ceiling work, hat / omega usually sit in the furring family. For solar strut and for PEB hat, they are different quotations.
Can I copy 380 V/60 Hz from the strut line onto the compact twin?
No. The compact twin is 220 V / 60 Hz single-phase on that specification.
kW, stands and voltage above are labeled to the named quotation they came from. Structural hat/sigma PEB numbers stay on a dimensioned drawing. Commercial terms come back on the offer.
References
- ZTRFM wiki: Furring / C Furs / Hat Channel Roll Forming Line
- ZTRFM wiki: Furring Channel vs Drywall C Stud
- Process library: Hat Channel / Solar Strut — 24-pass Φ70, 22+5.5 kW, 380 V/60 Hz
- Process library: Small Hat + U Twin Compact — 12-stand hat, 220 V/60 Hz/1φ
- Related: C and Z purlin encyclopedias (interchange mills, not hat)