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PT3070 Intelligent Painting Production Line

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Categories	Automatic Painting Production Line
Brand	YOMI CNC Cutting&Welding Machinery
Model	PT3070

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YOMI PT3070 Intelligent Painting Production Line

The YOMI PT3070 is a fully automatic, enclosed painting line for steel structures—H-beams, plates, welded parts, angle steel and pipes. It replaces manual spraying with 3D-laser path planning and 12 Graco spray guns, cutting labor and paint waste while keeping film thickness uniform and emissions controlled. It is built by Shandong Yomi Intelligent Science and Technology Co., Ltd. (YOMI), a steel-structure equipment manufacturer exporting to 120+ countries.

YOMI PT3070 automatic painting production line installed in a steel-structure workshop

Key Specifications at a Glance

Model	PT3070
Workpiece cross-section (W × H)	3000 × 700 mm
Workpiece length	3000 – 12000 mm
Line pass speed	0.6 – 3 m/min
Spray guns	12 sets (Graco, USA): 6 top + 6 bottom
3D scanning	4 × SICK lidar (Germany), 4 mm resolution
Drying chamber	40 m, gas or electric, up to 70 °C
Dry film thickness	60 µm
Total power	~90 kW (excl. compressed-air kinetic power)
Particle emission	< 5 mg/m³ at filter outlet

Line Layout: What a PT3070 Line Includes

PT3070 painting line layout: infeed roller, painting chamber, drying chamber, heating furnace, 3D scanning, outfeed roller and VOC treatment

The line is delivered as a complete flow: infeed roller conveyor, 3D scanning station, painting chamber with top/bottom gun gantries, flow-leveling section, drying chamber with heating furnace, outfeed roller conveyor, and a paint-mist / VOC treatment unit. Members travel in one direction, so one pass delivers a fully coated and dry-to-touch workpiece.

YOMI PT3070 automatic painting line 3D layout with enclosed painting and drying chambers and roller conveyors

What It Paints and Where It Fits

The automatic painting line handles surface coating for plates, H-beams, welded assemblies, angle steel and round pipes across the steel-fabrication industry:

Steel-structure fabrication plants and H-beam production lines
Bridge, marine and offshore wind-power structures
Pressure vessels, silos and heavy welded parts
Any shop moving from manual spray to controlled, repeatable coating

Why Automate: PT3070 vs Manual Spraying

Factor	Manual spray	YOMI PT3070 line
Environment	Open, high VOC, occupational hazard	Sealed room, centralized waste-gas recovery, <5 mg/m³
Coverage	Uneven, slow drying	Top, bottom and ribs painted in one pass
Path accuracy	Operator dependent	3D laser scan generates exact spray path
Paint waste	High overspray	Paint-on-presence logic, no empty spray
Labor	Multiple workers, health risk	One operator at the HMI

How the Line Works

PT3070 painting line process flow: loading, painting, leveling, drying, cooling, unloading

Workpiece lifted onto the infeed roller conveyor
3D laser scanning measures shape and spacing (4 mm step)
YOMI intelligent software generates the automatic painting code
12 spray guns apply single / double / triple coverage as set
Flow leveling, then drying chamber brings film to finger-dry
Outfeed conveyor delivers the finished member

Core Components and Brands

PT3070 multi-gun spray head assembly with Graco spray guns

Spray pumps & guns: Graco (USA), XM two-component proportioner, max 434 bar, mixing accuracy < 5%
3D scanning lidar: SICK (Germany), LMS511 series
Control: Siemens PLC (1200 / 200smart), Advantech 21.5″ HMI, Panasonic AC servo
Software: YOMI 3D scanning system + CNC spraying control system (data export to Excel)
Drying burner: Best (Italy), natural-gas standard, electric optional

Full Technical Parameters

Door size (W × H)	3100 × 900 mm
Allowed member section (W × H)	3000 × 700 mm
Allowed member length	3000 – 12000 mm
Allowed load	1000 kg/m
Productivity (pass speed)	0.6 – 3 m/min
Spray guns	Graco (USA), 6 + 6 sets
Spray pump	Graco (USA), 1 set
Paint kettle	100 L
Lidar / elevated laser	SICK (Germany), 4 + 4 sets
Infeed roller	Load 1000 kg/m, motor 3 kW, Ø159×8, length 16 m
Spray booth motion	Gun speed 30000 mm/min, lift 12000 mm/min, Panasonic servo
Dry room	Length 40 m, gas/electric, burner 3,000,000 kcal, fan 7.5 kW
Outfeed roller	Load 1000 kg/m, motor 3 kW, Ø159×8, length 12 m
Paint-mist treatment	Air volume 20000 m³/h, power 22 kW (VOC unit optional)
Compressed air	0.4 – 0.6 MPa, flow 48 m³/h
Total power (excl. air)	~90 kW

Packaging, Delivery and Support

Delivery: 60 working days after receipt of advance payment
Warranty: 12 months
Export packing: standard seaworthy packing for full-line shipment
Support: English-speaking engineers, spare-parts supply, South-Africa overseas warehouse; site commissioning available
Certifications: ISO 9001 quality system; CE-marked electrics available on request

Frequently Asked Questions

What workpieces can the PT3070 paint?: Plates, H-beams, welded assemblies, angle steel and round pipes up to 3000×700 mm section and 12 m length.
Can it handle two-component (2K) coatings?: Yes. A Graco XM two-component proportioner mixes at 1:10–10:1 with <5% error and self-alarms on deviation.
How is film thickness controlled?: By gun speed, nozzle size and coverage mode; the line reaches 60 µm dry film in the 40 m drying chamber.
Does it meet emission rules?: Painting is in a sealed room with centralized waste-gas recovery; particles at the filter outlet are below 5 mg/m³. VOC treatment is optional.
Can it connect to my MES?: Yes. The control system provides data-collection and open read/write interfaces for production statistics and remote start/stop.

Request a Quote

Tell us your typical member size, coating type and daily output, and YOMI will size a PT3070 painting line for your shop. Contact sales@yomi-china.com or visit www.steelstructurer.com.

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