c/z interchangeable steel purlin making machine for warehouse

CZ purlin roll forming machine

Our C/Z interchangeable purlin roll forming machine is designed to produce both C-shaped and Z-shaped steel purlins on a single production line, with a quick manual or automatic changeover between the two profiles. It processes hot-dip galvanized steel coils (and pre-painted color steel) into precision purlins used as the secondary support structure in steel-framed buildings.

With a robust welded-steel frame, hydraulic punching & cutting, and a full PLC + touch-screen control system, this machine delivers stable, high-speed, low-labor production — ideal for steel fabricators, construction material suppliers, and pre-engineered building (PEB) companies across South Africa and Sub-Saharan Africa.

Key Features 

• C/Z interchangeable design — one machine produces both C and Z purlins; profile changeover in ~10–30 minutes.

• Full automatic operation — coil feeding → roll forming → hydraulic punching → automatic length measurement → hydraulic cutting → output table, all controlled by PLC.

• Wide size range — C80–300mm and Z100–300mm adjustable by changing spacers / adjusting bolts.

• Hydraulic punching system — automatic pre-punching of bolt holes (web holes) before cutting, no secondary drilling needed.

• Servo / encoder length control — high cutting accuracy (±0.5 mm), no material waste on fixed-length cutting.

• Heavy-duty roll shafts — Ø70–Ø90 mm polished 45# steel shafts for stable, vibration-free forming.

• Roller material — GCr15 bearing steel rollers, hardened and polished for long service life.

• User-friendly touch screen — set length, piece count and hole pattern on the HMI; English interface standard.

• Safety guarding & emergency stop — meets CE-style safety standards on request.

• Export packaging — whole machine loaded in a 40HQ container, ready for sea freight to Durban / Cape Town / Port Elizabeth.

echnical Specifications (Spec Table)

Item                                            Parameter

Product name                            CZ Purlin Roll Forming Machine

Applicable material                  Hot-dip galvanized steel (GI), pre-painted steel (PPGI), mild steel

Yield strength                          Q235 / Q345 (or equivalent S350GD)  

Material thickness                  1.5 – 3.0 mm (customizable)

C purlin range                        C80 – C300 mm (web height)

Z purlin range                        Z100 – Z300 mm

Forming speed                      10 – 25 m/min (depending on profile & thickness)

Number of forming stations  12 – 15 stations (per profile)

Roll shaft diameter                Ø70 – Ø90 mm, 45# steel

Roller material                      GCr15 bearing steel, hardened & chrome-polished

Main drive                            Gearbox + motor (4.0–7.5 kW)

Forming motor power          4.0 kW (or as required)

Hydraulic system power      3.0 kW

Cutting method                  Hydraulic flying cut / stop cut, cr12 mould steel blade

Punching                            Hydraulic, web bolt holes (round / oval, per drawing)

Control system                  PLC + touch screen (Delta / Siemens optional), encoder length tracking

Length measuring accuracy  ±0.5 mm

Voltage                            380V / 50Hz / 3Phase (customizable to South African 230V/400V, 50Hz)

Machine dimension (approx.)    9000 × 1500 × 1600 mm

Machine weight (approx.)          6.0 – 8.0 tons

Loading port                              Coil car + passive decoiler (manual / hydraulic expansion)

 Production Line Composition

1. Hydraulic decoiler / uncoiler (manual expansion, capacity ~3–5 tons)

2. Coil feeding & leveling table

3. Pre-punching station (hydraulic, web holes)

4. Main roll forming machine (C and Z stations)

5. Hydraulic cutting device (to fixed length)

6. Run-out output table (incl. counting rack)

7. Electrical control cabinet (PLC + HMI)

8. Hydraulic power station

Application Scenarios

• Industrial & commercial buildings — factories, warehouses, logistics centers, supermarkets

• Pre-engineered buildings (PEB) — secondary steel framing support

• Agricultural buildings — farm sheds, poultry houses, greenhouses

• Multi-storey steel structures — purlin support for roof & wall cladding

• Roof & wall systems — supporting corrugated / standing-seam metal sheets

Common South African uses: warehouse construction in Gauteng, mining-related buildings, agricultural sheds in the Free State & Western Cape, and PEB projects across the region.

Packaging & Shipment to South Africa

• Packaging: whole machine in nude / wrapped with waterproof plastic film; electrical cabinet wrapped in waterproof bag; bolts and spare parts packed in a wooden box; key parts (blades, tools) in a small toolbox.

• Loading: 1 × 40HQ container.

• Main ports: Shanghai / Qingdao / Tianjin → Durban, Cape Town, Port Elizabeth (Gqeberha).

• Lead time: 60–80 working days after deposit.

• Payment: 40% T/T deposit, 60% balance before shipment (negotiable).