Sigma Purlin Roll Forming Machine Data Sheet | Technical Specifications
Sigma Purlin Roll Forming Machine Technical Data Sheet
Machine Overview
Parameter Specification
Machine Name Sigma Purlin Roll Forming Machine
Profile Produced Sigma Purlin Structural Steel Profile
Machine Type Single profile structural roll forming machine
Production Application Steel building structures, heavy roof supports, structural framing
Manufacturing Process Continuous cold roll forming
Production Environment Factory production line / structural steel fabrication facility
The sigma purlin roll forming machine produces sigma-shaped structural steel sections used in heavy-duty steel construction. Sigma purlins provide higher load capacity compared to traditional C or Z purlins due to their deeper and reinforced profile geometry.
These profiles are widely used in industrial buildings, long-span roof structures, and heavy steel construction projects.
Production Specifications
Specification Typical Value
Production Speed 8–20 m/min
Forming Stations 18–26 stations
Material Thickness Range 2.0–4.0 mm
Coil Width 200–600 mm
Coil Weight Capacity 5–12 tons
Cut Length Tolerance ±1 mm
Minimum Purlin Length 1000 mm
Maximum Purlin Length Unlimited
Sigma purlin machines process heavier gauge steel compared to standard purlin machines.
Material Compatibility
Material Type Supported
Galvanized Steel Yes
Hot Rolled Steel Yes
Black Steel Yes
Pre-painted Steel Limited
High Strength Steel Yes
Sigma purlins are typically produced from high strength galvanized structural steel.
Material Strength
Property Typical Range
Yield Strength G350 – G550
Tensile Strength Up to 600 MPa
Coating Types Galvanized Z275 / Z450
High strength materials allow sigma purlins to support larger structural loads.
Machine Frame Construction
Component Specification
Frame Type Heavy duty welded structural steel frame
Frame Plate Thickness 22–35 mm
Machine Base Reinforced heavy fabricated steel base
Frame Alignment Precision machined mounting surfaces
Machine Weight 18–30 tons
Sigma purlin machines require extremely rigid frames to handle heavy steel thickness.
Roll Tooling Specifications
Specification Typical Value
Roller Material GCr15 bearing steel
Heat Treatment HRC 58–62
Roller Diameter 90–130 mm
Shaft Diameter 90–110 mm
Shaft Material 40Cr alloy steel
Surface Finish Hard chrome plating
Roll Pass Design Sigma purlin structural forming
Forming Stages 18–26 stations
Roll tooling progressively forms the complex sigma-shaped profile geometry.
Drive System
Component Specification
Drive Type Heavy duty gearbox drive system
Main Motor 22–37 kW
Drive Ratio 1:20
Transmission Industrial heavy-duty gearbox
Lubrication Oil bath gearbox
High torque drive systems are required for forming thick structural steel.
Hydraulic Cutting System
Component Specification
Cutting Type Hydraulic post cut or flying cut
Blade Material Cr12 tool steel
Cutting Accuracy ±1 mm
Hydraulic Pressure 14–22 MPa
Hydraulic Motor 7.5–15 kW
Hydraulic cutting systems ensure precise cutting of heavy structural profiles.
Control System
Component Specification
PLC Siemens / Mitsubishi / Delta
HMI Industrial touch screen interface
Length Measurement Rotary encoder system
Control Accuracy ±1 mm
Automation Fully automatic production
Control functions include:
Automatic purlin length control
Batch production programming
Punching and hole pattern control
Fault diagnostics
Emergency stop system
Electrical Specifications
Parameter Value
Voltage 380V / 415V / 480V
Frequency 50 Hz / 60 Hz
Control Voltage 24V
Electrical Cabinet IP54 industrial enclosure
Protection Overload protection and circuit breakers
Machine Layout Dimensions
Parameter Value
Machine Length 12–18 m
Machine Width 2–2.5 m
Machine Height 2–2.8 m
Total Production Line Length 20–35 m
Typical production line configuration:
Uncoiler → Leveling System → Punching Unit → Roll Forming Machine → Hydraulic Cutting → Run-out Table
Coil Handling Equipment
Specification Value
Uncoiler Type Hydraulic decoiler
Coil Capacity 5–12 tons
Coil Inner Diameter 450–550 mm
Coil Outer Diameter Up to 1500 mm
Expansion Type Hydraulic expansion system
Optional Equipment
Equipment Description
Punching System Automatic structural hole punching unit
Automatic Stacker Automated purlin stacking system
Coil Car Automatic coil loading system
Servo Feeder Precision feeding system for punching operations
Remote PLC Monitoring Remote diagnostics and monitoring
Installation Requirements
Requirement Typical
Foundation Reinforced concrete foundation
Floor Load Capacity 15–25 tons
Electrical Connection Three phase industrial power supply
Air Supply Optional for punching system
Installation Time 4–6 days
Maintenance Requirements
Component Maintenance Interval
Gearbox Oil Every 6 months
Bearings Every 6 months
Hydraulic Oil Every 12 months
Roll Tooling Inspection Monthly
Routine maintenance ensures consistent forming of heavy structural steel profiles.
Production Capacity Example
Production Speed Output
8 m/min 480 m/hour
12 m/min 720 m/hour
18 m/min 1080 m/hour
Production output depends on profile dimensions and punching operations.
Sigma Purlin Profile Information
Specification Value
Profile Height 150–350 mm
Flange Width 60–100 mm
Lip Size 20–30 mm
Material Thickness 2.0–4.0 mm
Sigma purlins provide high structural load capacity and are commonly used in heavy-duty steel construction.
Machine Standards
Standard Description
CE Certification European machinery safety standards
ISO 9001 Manufacturing quality management
Electrical Compliance Industrial electrical safety standards
Shipping Information
Specification Value
Container Size 40 ft container
Shipping Weight 20–32 tons
Packaging Industrial export packing
Typical Machine Price Range
Machine Type Price Range
Basic Line $140,000 – $180,000
Automatic Line $180,000 – $240,000
Heavy Structural Line $250,000+
Pricing depends on punching automation, profile size capability, and production speed.
Applications
Industry Use
Steel Buildings Long span roof structures
Industrial Buildings Heavy structural roof support
Warehouses Large span structural framing
Infrastructure Projects Heavy steel construction
Sigma purlins are widely used in modern steel construction because they provide superior load capacity and structural performance compared to standard purlin profiles.