Product Description

BEENEW Purlin Roll Forming Machine is an industrial roll forming system for continuously producing C and Z steel purlins from steel coils. The current standard configuration supports C80–300 mm and Z140–300 mm profiles, 1.5–4.0 mm material thickness, 13-20 forming stations, computer-controlled type changing, hydraulic punching/pre-cutting and ±2 mm cutting length precision.

The machine can be configured for C purlins, Z purlins, or interchangeable C/Z purlins according to the required profile drawing, material grade, thickness, punching pattern, finished length and production capacity.

Purlin Roll Forming Machine Specifications

BEENEW Purlin Roll Forming Machine is currently specified for C80–400 mm and Z140–400 mm profiles, 1.5–4.0 mm material, 13-20 forming stations and ±2 mm cutting length precision. The machine uses computer-controlled type changing and hydraulic punching/cutting for continuous purlin production.

Standard Machine Parameters

Parameter	BEENEW Standard Configuration
Machine Type	Purlin Roll Forming Machine
Products	C Purlin / Z Purlin
C Purlin Width	C80–300 mm
Z Purlin Width	Z140–300 mm
Purlin Height	30–80 mm
Material Thickness	1.5–4.0 mm
Feeding Width	145–495 mm
Transmission Motor	11-37 kW
Punch & Cut Motor	5.5 kW
Type Changing Motor	0.25 kW + 0.55 kW
Type Changing	Computer Control
Shaft Diameter	70-95 mm
Roller Material	GCr15
Speed Control	AC Frequency Control
Punching/Cutting	Hydraulic, Pre-Cutting & Pre-Punching
Forming Stations	13-20
Cutting Length Precision	±2 mm
Machine Weight	Approx. 12,300 kg

What Is a Purlin Roll Forming Machine?

Purlin roll forming machine is a continuous cold-forming production line that converts steel coil into structural C or Z purlins. It progressively bends the strip through multiple forming stations and can integrate leveling, punching, cutting and computerized control into one production process.

Purlin Machine Definition

Item	Description
Input	Steel coil
Forming Method	Continuous cold roll forming
Main Products	C and Z purlins
Typical Operations	Leveling, feeding, punching, forming, cutting
Control	PLC/HMI or computerized control
Output	Cut-to-length C/Z purlins

C and Z purlins are commonly used as secondary structural members in steel buildings, warehouses, industrial facilities and agricultural structures.

What Purlins Can a Purlin Roll Forming Machine Produce?

A purlin roll forming machine can be designed for C purlins, Z purlins or interchangeable C/Z purlins. The producible dimensions depend on the roll tooling, shaft arrangement, adjustment system and final profile drawing rather than on the machine name alone.

Product Capability

Profile	BEENEW
C Purlin	C80–300 mm
Z Purlin	Z140–300 mm
Purlin Height	30–80 mm
Material Thickness	1.5–4.0 mm
C/Z Interchangeable	Available on selected configurations
Punching	Configurable
Cutting	Hydraulic

C Purlin

C purlins have a C-shaped cross-section and are commonly used for roof and wall support structures.

Z Purlin

Z purlins have a Z-shaped cross-section and can be useful where overlapping connections are part of the structural design.

C/Z Interchangeable Purlin

A C/Z interchangeable machine is designed to produce multiple C and Z profiles from one production line.

How Does a Purlin Roll Forming Machine Work?

A typical purlin roll forming line starts with coil loading and decoiling, followed by guiding and leveling, punching, pre-cutting, progressive roll forming, hydraulic cutting and finished-product output. Each stage controls a different production variable, so the complete line must be evaluated rather than judging the main roll former alone.

Production Flow

Steel Coil → Decoiler → Feeding & Leveling → Punching → Pre-Cutting → Roll Forming → Hydraulic Cutting → Output

Stage	Main Function
Decoiling	Unwinds steel coil
Guiding	Centers strip
Leveling	Removes coil deformation
Punching	Creates connection holes
Pre-Cutting	Prepares forming sequence
Roll Forming	Produces C/Z profile
Hydraulic Cutting	Cuts required length
Output	Transfers finished purlins

Coil Loading and Decoiling

The decoiler supplies steel strip continuously to the purlin production line. Its capacity must match coil weight, coil width, inner diameter, outer diameter and material thickness so that the forming line receives stable and controlled material.

Decoiler Selection Parameters

Parameter	Must Be Confirmed
Coil Weight	Yes
Coil Width	Yes
Coil ID	Yes
Coil OD	Yes
Material Thickness	Yes
Expansion Type	Manual / Hydraulic / Automatic

The decoiler together with the complete production line,no need to add cost.

Guiding and Leveling

The leveling and guiding section prepares the steel strip before forming by controlling its alignment and reducing coil-set deformation. Stable feeding is important because strip misalignment at the entrance can affect the final profile dimensions, hole positions and straightness.

Leveling Parameters

Function	Purpose
Side Guiding	Maintains strip position
Leveling Rollers	Straightens strip
Adjustable Guides	Accommodate width variations
Feeding Rollers	Transfer material

BEENEW's related purlin roll former configuration uses adjustable guides and a leveling arrangement with three upper and four lower rollers.

Purlin Punching System

An integrated punching system allows connection holes to be produced during purlin manufacturing instead of requiring a separate downstream drilling operation. Hole diameter, position, spacing and punching sequence should be designed directly from the customer's purlin drawing.

Punching Parameters

Requirement	Example
Hole Type	Round / Slot
Hole Position	Web / Flange
Hole Diameter	Project dependent
Hole Spacing	Project dependent
Punching Method	Hydraulic
Control	PLC / Encoder / HMI

Pre-Punching vs. Post-Punching

Pre-punching creates holes while the steel strip is still flat, while post-punching creates holes after the profile has been formed. The correct method depends on hole geometry, position, profile shape, production speed and required accuracy.

Method	Typical Advantage	Main Consideration
Pre-Punching	Easier access to flat strip	Hole position must account for forming
Post-Punching	Directly works on formed profile	Tooling and positioning can be more complex

For complex purlin projects, the punching drawing should be reviewed before machine design is finalized.

Roll Forming Process

The roll forming section progressively bends the flat steel strip through multiple roller stations until the required C or Z cross-section is reached. The forming passes must be designed according to material thickness, profile geometry, steel strength and dimensional tolerance.

Forming Parameters

Parameter	BEENEW Standard
Forming Stations	13-20
Shaft Diameter	90/75 mm
Roller Material	GCr15
Material Thickness	1.0–4.0 mm
Drive Motor	11-37 kW

How Many Forming Stations Does a Purlin Machine Need?

There is no universal number of forming stations for every purlin machine. The required number depends on profile geometry, material thickness, steel strength, forming angle, required tolerance, machine speed and roller design.

Forming Station Comparison

Competitor data confirms that station counts vary by model, so station number alone should not be treated as a quality ranking.

Material Thickness and Steel Grade

Material thickness is only one part of purlin machine selection; steel grade and yield strength also affect forming load and tooling requirements. BEENEW's published standard configuration supports 1.5–4.0 mm material, while special materials should be confirmed through engineering review.

Material Selection

Material Factor	Why It Matters
Thickness	Determines forming load
Steel Grade	Affects mechanical strength
Yield Strength	Affects forming force
Coil Width	Determines feeding system
Surface Coating	Affects tooling and surface protection

Purlin Roll Forming Machine Speed

Machine speed should be evaluated as production speed for the customer's actual profile and material, not simply as the highest advertised number. Thickness, profile complexity, punching, cutting, acceleration and required dimensional accuracy can all affect usable production speed.

Speed Evaluation

Factor	Effect on Speed
Material Thickness	Higher thickness may require lower speed
Profile Complexity	More complex profiles may require controlled forming
Punching	Limits cycle speed
Cutting	Affects synchronization
Required Tolerance	May affect production speed
Machine Design	Determines stable operating range

Is 30 m/min Always Better?

No. A higher maximum speed does not automatically mean higher production value because the machine must maintain profile accuracy, punching position, cutting accuracy and stable operation at the required material thickness.

What to Compare Instead

Metric	Better Question
Maximum Speed	What is the stable speed for my profile?
Output	How many finished pieces/hour?
Accuracy	What tolerance is achieved?
Punching	Can holes remain accurate at production speed?
Cutting	Is cut length maintained?
Downtime	How often is manual adjustment required?

This approach avoids comparing machines using maximum-speed figures alone.

Automatic C/Z Purlin Roll Forming Machine

An automatic C/Z purlin machine combines programmable control with mechanical adjustment to produce multiple profile sizes or C/Z profiles from one production line. Automation can cover size adjustment, punching, cutting, counting and other functions, but the exact scope must be stated in the machine specification.

Automation Functions

Function	Possible Automation
Feeding	Automatic
Leveling	Automatic
Punching	Programmable
Size Change	Computer Controlled
C/Z Changeover	Selected Configurations
Length Measurement	Encoder
Cutting	Hydraulic
Counting	PLC
Stacking	Optional

What Does C/Z Automatic Changeover Mean?

C/Z automatic changeover means the machine is engineered to change its forming configuration between specified C and Z profiles with reduced manual intervention. Changeover time is configuration-specific and should be measured from the last qualified piece of one profile to the first qualified piece of the next.

Changeover Checklist

Question	Buyer Should Confirm
Does the machine stop?	Yes / No
Are rollers replaced?	Yes / No
Are spacers replaced?	Yes / No
Is tooling manually adjusted?	Yes / No
Is the cutter changed?	Yes / No
Is PLC adjustment required?	Yes / No
Is the first piece included in timing?	Yes / No

Gearbox Drive vs. Chain Drive

Both chain and gearbox transmission systems are used in purlin roll forming machines. Chain systems can be suitable for standard applications, while gearbox systems may be selected where higher torque, stability or heavier-duty operation is required; the correct choice depends on the complete machine design.

Drive Comparison

Factor	Chain Drive	Gearbox Drive
Structure	Simpler	More integrated
Cost	Often lower	Often higher
Maintenance	Chain inspection required	Gearbox maintenance required
Heavy-Duty Use	Configuration dependent	Often considered
Torque	Application dependent	Suitable for high-torque designs
Selection	Based on load/design	Based on load/design

Beenew Machinery currently offers both gearbox and chain options for different purlin applications.

Purlin Roll Forming Machine Shaft and Roller Design

Shaft diameter, roller material and tooling design must work together to maintain forming stability. BEENEW's published standard configuration uses 90/75 mm shafts and GCr15 rollers, while special profile or material requirements may require a different mechanical design.

Mechanical Parameters

Component	BEENEW Standard
Main Shaft	90/75 mm
Roller	GCr15
Forming Stations	13-20
Transmission Motor	11-37 kW
Speed Control	AC Frequency Control

The shaft and roller specifications should be evaluated together with material thickness and profile geometry rather than as isolated numbers.

Hydraulic Cutting System

The cutting system separates the continuously formed purlin into programmed lengths. A properly synchronized hydraulic cutting system should maintain the specified cut length while minimizing deformation at the finished profile.

Cutting Parameters

Parameter	Requirement
Cutting Type	Hydraulic
Length Control	Encoder / PLC
Finished Length	Customer specified
Precision	BEENEW standard ±2 mm
Blade Material	Model dependent

Purlin Roll Forming Machine Applications

C and Z purlins produced by roll forming machines are commonly used as secondary structural members in industrial buildings, warehouses, agricultural buildings and other steel structures. The final application, allowable load and profile selection should always follow the project's structural design.

Common Applications

Application	Typical Purlin Role
Warehouses	Roof and wall support
Industrial Buildings	Secondary steel framing
Agricultural Buildings	Roof/wall framing
Commercial Buildings	Steel structure support
Steel Workshops	Roof and wall systems
Construction Projects	Project-specific structural members

How to Choose a Purlin Roll Forming Machine

The correct purlin roll forming machine should be selected from the finished profile backward: first define the C/Z drawing, material thickness and steel grade, then determine punching, cutting, speed, automation and transmission requirements. This prevents buying a machine whose advertised range does not match the actual product.

Purlin Machine Selection Checklist

Requirement	Information to Provide
Profile	C / Z drawing
Width	Exact dimensions
Height	Exact dimensions
Lip	Dimension
Thickness	Min / Max
Steel Grade	Q235 / Q345 / Q550
Yield Strength	MPa
Punching	Hole drawing
Length	Finished length
Speed	Required output
Automation	Manual / Semi / Automatic
C/Z	Single / Interchangeable

What Profile Drawing Should You Send?

A dimensioned profile drawing is the most important document for configuring a purlin roll forming machine. It should show web height, flange width, lip size, thickness, hole positions and tolerances so the manufacturer can design the forming passes and punching system correctly.

Minimum Drawing Information

Web height

Flange width

Lip dimension

Material thickness

Hole diameter

Hole location

Hole spacing

Finished length

Required tolerance

A PDF, CAD drawing or clearly dimensioned profile image can be used for the initial technical review.

Purlin Roll Forming Machine Price

Purlin roll forming machine price depends on the complete production configuration rather than one standard market price. Profile size, material thickness, C/Z interchangeability, forming stations, punching, cutting, drive system, automation, decoiler and output equipment can all change the final quotation.

Main Price Factors

Factor	Price Impact
C or Z Production	Configuration
C/Z Interchange	Additional mechanism/control
Material Thickness	Mechanical design
Profile Size	Tooling range
Punching	Dies and hydraulic system
Cutting	Cutting system
Drive	Chain / gearbox / servo
Automation	PLC and adjustment system
Decoiler	Capacity
Stacking	Optional
Electrical Standard	Country dependent

A reliable quotation should therefore be based on a complete technical specification rather than machine name alone.

Fully Automatic vs. Semi-Automatic Purlin Machine

The difference between fully automatic and semi-automatic purlin machines is the amount of manual intervention required during production and size change. Buyers should define which functions are automatic instead of relying on the label “fully automatic.”

Automation Comparison

Function	Semi-Automatic	Fully Automatic
Feeding	Automatic / Manual	Automatic
Punching	Programmed	Programmed
Cutting	Automatic	Automatic
Size Adjustment	Manual / Assisted	Computer Controlled
C/Z Change	Manual on some models	Automated on selected models
Counting	Optional	Programmable
Stacking	Optional	Optional

What Should You Send to Get a Purlin Machine Quote?

To receive an accurate quotation, provide the manufacturer with the profile drawing, material thickness, steel grade, coil width, punching drawing, finished length, required output and automation level. These details allow the manufacturer to configure tooling, drive power, punching and cutting systems correctly.

RFQ Information

Purlin profile drawing

Material grade

Material thickness

Coil width

Hole drawing

Finished length

Required production speed

Required monthly output

C, Z or C/Z interchangeable

Electrical standard

Installation country

Required automation level

BEENEW Purlin Roll Forming Machine Manufacturing Experience

Xiamen Beenew Machinery is a branch company of Xiamen Brandnew Machinery and specializes in cold roll forming machinery. Its factory covers more than 30,000 m², employs more than 200 people and reports annual production capacity of 1,000 roll forming machines, with users in 50 countries.

Manufacturer Facts

Item	BEENEW Information
Company	Xiamen Beenew Machinery
Parent/Branch Relationship	Branch of Xiamen Brandnew Machinery
Factory Area	30,000+ m²
Employees	200+
Annual Output	1,000 sets
International Users	Nearly 300
Countries	50
Engineering	Experienced engineer team
Patents	CZ interchange, automatic changeover and other roll-forming technologies

Factory Testing Before Shipment

Factory testing should verify the complete production line rather than only the machine running without material. For a purlin machine, the most useful acceptance test includes actual material feeding, forming, punching, cutting and dimensional inspection against the approved profile drawing.

Recommended FAT Checklist

Test	Check
Coil Feeding	Stable feeding
Leveling	Strip straightness
Roll Forming	Profile dimensions
Punching	Hole position
Cutting	Finished length
PLC	Program operation
HMI	Parameter control
Emergency Stop	Safety function
Trial Production	Finished purlin
Final Inspection	Approved specification

Why Choose BEENEW for a Purlin Roll Forming Machine?

BEENEW combines roll forming manufacturing, engineering, machine testing and international after-sales support in one supplier. Its published factory information includes more than 30,000 m² of manufacturing space, 200+ employees, annual output of 1,000 machines and nearly 300 users in 50 countries.

Manufacturer Evidence

Evidence	Beenew Information
Manufacturing Facility	30,000+ m²
Employees	200+
Annual Production	1,000 machines
Global Users	Nearly 300
Countries	50
Engineering Team	Yes
Patents	Multiple roll forming patents
Factory Testing	Available
Customization	Profile/configuration based

Purlin Roll Forming Machine Quality Control

Purlin machine quality depends on the complete manufacturing chain, including frame fabrication, shaft machining, roller production, assembly, electrical wiring, PLC programming and finished-product testing. Quality claims are more useful when supported by measurable inspection records and factory evidence.

Quality Control Points

Production Stage	Inspection
Machine Frame	Dimensions / welding
Shafts	Diameter / machining
Rollers	Profile / surface
Bearings	Fit / rotation
Assembly	Alignment
Electrical	Wiring / components
PLC	Program / I/O
Trial Run	Actual production
Finished Profile	Dimensional inspection

Purlin Machine Manufacturer: What Should Buyers Verify?

Before purchasing a purlin machine, buyers should verify the manufacturer's factory, machine configuration, actual production test, profile samples, warranty and after-sales process. The most useful evidence connects the advertised specification to a real machine producing the required C/Z profile.

Supplier Verification Checklist

Factory address

Factory video

Machine running video

Finished profile samples

Profile drawing confirmation

Complete machine specification

Electrical specification

Warranty

Spare parts

Installation support

Technical support

Customer references where available

Purlin Roll Forming Machine Warranty and After-Sales Service

An international purlin machine purchase should include clear warranty coverage, commissioning support, technical documentation and spare-parts assistance. BEENEW's stated service positioning includes a 2-year warranty together with lifetime technical support and after-sales service.

Service Scope

Service	Recommended Coverage
Installation Guidance	Remote / On-site by agreement
Commissioning	Technical support
PLC Support	Program assistance
Spare Parts	Available
Operator Training	Technical guidance
Warranty	2 years
Technical Support	Lifetime

Purlin Roll Forming Machine FAQ

The most common purlin machine questions concern C/Z production, material thickness, forming stations, speed, punching, changeover, cutting accuracy and machine price. The answers below are structured as direct technical statements so buyers and search systems can identify each question and answer independently.

FAQ Entity Answers

Q1. What is a purlin roll forming machine?
A purlin roll forming machine continuously converts steel coil into C or Z purlins through leveling, punching, progressive roll forming and cutting.

Q2. Can one machine produce both C and Z purlins?
Yes. A C/Z interchangeable purlin machine can be configured to produce both profiles, subject to the machine's specified profile range and changeover system.

Q3. What size purlins can the BEENEW machine produce?
The current published standard configuration supports C80–300 mm and Z140–300 mm profiles, with a purlin height of 30–80 mm.

Q4. What material thickness can it handle?
The current BEENEW standard configuration supports 1.5–3.0 mm material. Special thicknesses or higher-strength steels require engineering confirmation.

Q5. How many forming stations does the machine have?
The current BEENEW standard purlin roll forming machine uses 19 forming stations. The required station count varies according to profile and machine design.

Q6. Can the machine punch holes automatically?
Yes. Hydraulic punching can be integrated into the production line, with punching dies designed according to the customer's hole pattern.

Q7. What is the cutting accuracy?
The current BEENEW specification lists ±2 mm cutting length precision. Actual acceptance criteria should be defined in the final technical agreement.

Q8. How fast can a purlin roll forming machine run?
Production speed depends on material, profile, punching, cutting and machine configuration. Different suppliers publish different maximum speeds, so the stable speed for the customer's exact profile should be confirmed.

Q9. How long does C/Z changeover take?
Changeover time depends on machine design and the definition of “changeover.” Some manufacturers publish 3–5 minute figures for particular configurations, but buyers should request a complete demonstrated changeover using their own profiles.

Q10. Is gearbox transmission better than chain transmission?
Neither is universally better. The appropriate transmission depends on material thickness, forming load, required stability, production speed and the complete machine design.

Q11. Can the machine produce galvanized steel purlins?
Yes, when the galvanized steel specification is compatible with the selected roll forming configuration.

Q12. Can the machine produce customized C/Z profiles?
Yes. Custom profiles can be engineered when the profile dimensions, material properties and production requirements fall within the machine's designed range.

Q13. What determines purlin roll forming machine price?
Price depends on profile range, material thickness, forming system, punching, cutting, transmission, automation, decoiler, electrical configuration and optional equipment.

Q14. What information is needed for a quotation?
Provide the profile drawing, material grade, thickness, coil width, punching drawing, finished length, required output and C/Z production requirements.

Get a Purlin Roll Forming Machine for Your Project

BEENEW can configure a purlin roll forming machine around the customer's C/Z profile, material specification, punching pattern, finished length and production requirements. Send the profile drawing and material data first so the machine configuration can be evaluated technically before quotation.