Leading the roll forming industry since1989, Zheng Liming, your best choice.


XIAMEN ZHENG LIMING METALLURGICAL MACHINERY CO.,LTD has been one of the market leaders due to providing high-quality products to clients and it is very possible for the company to achieve a greater advancement in the future. The product is characterized by multiple advantages.Its application ranges have been expanded to the Purlin Machine. XIAMEN ZHENG LIMING METALLURGICAL MACHINERY CO.,LTD aims to become the most influential enterprise in the world. In order to achieve this goal, we will insist on introducing high-tech talents and learning international advanced technology, and strive to improve technical strength and gain the initiative in competition.

Product Description

This Profile Drawing As Below Picture:
Z120-300 Auto-Changing Cold Rolling Mills for Z Purlin

General Parameter
1 Item Parameters
2 Size Z120-300
3 Material Galvanized Steel
4 Thickness 1.2-3.0 mm
5 Yield Strength 450-550 MPa
6 Feed Width According to the profile
7 Forming speed Approx.15 m/min
8 Roll Stages 16 Stages
9 Main Motor Power 30 KW (Servo Motor)
11 Shafts Diameter ф75 mm
12 Electric Standard According to local voltage

Machine Components
A.  5Ton*650mm Hydraulic Un-coiler
Hydraulic system to expand coil inner hole;Pump motor: 3KW ;
Frequency Inverter to regulate turn speed; Motor :3KW
Coil Inner-diameter= 470-560mm. Coil Outer-diameter Max. 1600mm;
Link-connect expanding system
Load Capacity: Max. 5 Tons; Coil Width Max. 650mm;
Hydraulic Holder on the top to hold the sheet, keep press all the working time, special design on the hydraulic group

Z120-300 Auto-Changing Cold Rolling Mills for Z Purlin

B.  Pre-Leveling Device
The In-feed Section of the machine allows for variations in sheet width
Pre-Level Device with 4 over 3 shafts to remove the Coil-set

C.  Hydraulic Pre-cutting/straightening system

Sheet feeding guide section with width variation
Powered feed in rolls
Stop to Punch, stop to cut
Hydraulic Pre-shearing device, manual control, only for cutting the first piece and the end piece of the sheet

D.  Cold Rolling Mills
The feeding section with guide;
Gear/Sprocket driving, 16- step to form
Rollers manufactured from Cr12, CNC lathes,Heat Treatment.
Shaft Diameter=Φ75mm, Precision Machined,

Main driving motors 4 to run the rollers and sheet go forward, 30KW, frequency speed control, closed loop control
Max. Line speed of roll former: approx. 15 M/Min

Z120-300 Auto-Changing Cold Rolling Mills for Z Purlin

E.  Innovative cutting system
Stop to Cut, Post Cut, Slug breaker
Machine has 1 set of cutting blade for all type sizes.
For cutting different sizes, the operator needs to adjust the screws in the system.

Innovative cutting system,
Cutting tool material: Cr12Mov

Z120-300 Auto-Changing Cold Rolling Mills for Z Purlin

F.  PLC Control System
Control the quantity, punching position & cutting Length automatically, and setting parameters for auto web/flank size changing
Cut-to-length for post-cut,
Combined with: PLC, Touch Screen ( SIEMENS ),Inverter (SCHNEIDER) , Encoder (Omron), etc
Closed Loop control,
Cut-to-length tolerance≤±1 mm
Control Voltage 24V
Z120-300 Auto-Changing Cold Rolling Mills for Z Purlin

G.  Run-out Rack    6 meters, un-power

Z120-300 Auto-Changing Cold Rolling Mills for Z Purlin
Z120-300 Auto-Changing Cold Rolling Mills for Z Purlin

After-Sale Service

In correct operation & maintaining, the machine is guaranteed for one year since leaving our factory excludes the electric elements.
If installation is needed, WE will dispatch a technician to the buyer's factory abroad to assist regulating the machine with charge free. The buyer should assist US to get the Chinese technician's visa and should pay for the roundtrip air ticket and the local accommodation.
If installation is needed, the buyer shall make the following preparation before arrival of technicians.

Terms Of Trade
  1. Package & Shipment: Facility water-proof packing, Control cabinet packed in wooden packing.
  2. Payment: 30%payment by T/T is required as deposit within a week since the contract signing date.70% payment by T/T is required before the machine be send out of factory.
Basic Information
  • Year Established
  • Business Type
  • Country / Region
  • Main Industry
  • Main Products
  • Enterprise Legal Person
  • Total Employees
  • Annual Output Value
  • Export Market
  • Cooperated Customers

contact US


The first thing we do is meeting with our clients and talk through their goals on a future project. During this meeting, feel free to communicate your ideas and ask lots of questions.


They are all manufactured according to the strictest international standards. Our products have received favor from both domestic and foreign markets.
They are now widely exporting to 200 countries.


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