Box Beam Production Line (300-1200mm, up to 15m, 20-80mm Plate) | Zhouxiang, Wuxi, China

Box Beam Production Line

Zhouxiang: Wuxi, Jiangsu, China

Complete automated line for box beams and box girders up to 1,200 × 1,200mm and 15m long, with 20 to 80mm plate, built from assembly, root welding, submerged arc, electroslag, and end-face milling machines.

Zhouxiang's Box Beam Production Line is a complete system for making welded box beams and box girders for construction, shipbuilding, steel manufacturing, and heavy machinery. It handles work-piece sizes from 300 to 1,200mm and lengths up to 15m, with plate 20 to 80mm thick.

The line is made from separate machines that carry a box beam through each stage: assembling the bottom plate, web plates, and internal diaphragms; root welding; submerged arc and electroslag welding; and finally milling the ends flat. Roller conveyor tracks move material between stations, and the line is fitted with active collision prevention. It is offered as a customisable line, with dimensions, output, and features adapted to the customer.

Zhouxiang lists certification to ISO and CE, a one-year warranty and after-sales service, and a production capacity of 15 sets per month.

The Machines in the Line

1. Diaphragm assembly machine
Assembles and welds the diaphragms (internal reinforcing plates) inside the box beam, with pneumatic clamping, position adjustment, and a 180° overturning table.

• Workpiece size: 300 to 1,200mm; diaphragm thickness: 20 to 80mm
• Overturning angle: ±180°; overturning speed: 1.5 r/min
• Load capacity: 1,500kg; motor: 0.75kW
• Listed price: $3,000 to $4,000

2. Box beam assembling machine
Assembles the bottom plate, web plates, and diaphragms, with hydraulic clamping and precise centering.

• Maximum load: 20 tonnes; hydraulic pressure: 14MPa
• Frame speed: 4 to 6m/min
• Workpiece thickness: 20 to 80mm
• Section size: 300 × 300mm to 1,200 × 1,200mm; length: 4,000 to 15,000mm
• Listed price: $30,000 to $60,000

3. Box beam root welding machine
Welds the root seams of the box beam automatically, in the horizontal position.

• Workpiece size: 300 to 1,500mm; length: 4,000 to 15,000mm
• Welding speed: 0.3 to 1.5m/min; return speed: 3m/min
• Listed price: $30,000 to $60,000

4. Box beam electroslag welding machine
Semi-automatic feeding, assembling, welding, and cutting, for the vertical welds at the diaphragms.

• Material thickness: 20 to 80mm; length: 4,000 to 15,000mm
• Cross-section: 300 × 300mm to 1,200 × 1,200mm
• Automation level: semi-automatic
• Listed price: $40,000 to $60,000

5. Box beam submerged arc welding machine
Welds the long seams of the box beam.

• Web height: 200 to 1,500mm; flange width: 200 to 800mm
• Overall power: 9.6kW; welding speed: 0.15 to 1.0m/min
• Rail gauge: up to 5,000mm
• Listed price: $15,000 to $37,000

6. CNC end face milling machine
Mills the beam ends flat and square before final assembly.

• Motor: 5.5kW; milling speed: 80 to 400rpm
• Cutter diameter: 160 to 200mm
• Horizontal stroke: 1,500mm; horizontal feed: 50 to 600mm/min
• Listed price: $18,000 to $30,000

(Prices are the supplier's published ranges for each machine, and no total line price is given.)

Line Specifications

• Work-piece size: 300 to 1,200mm
• Work-piece length: up to 15m
• Plate thickness: 20 to 80mm
• Production capacity: 15 sets per month
• Certification: ISO, CE
• Warranty and after-sales service: 1 year
• Packing: seaworthy strong packing
• HS code: 8468800000

Welding processes covered: submerged arc (SAW), electroslag (ESW), MIG, and twin-wire SAW for web welding

Condition Available: New

Key Features

• Complete line from diaphragm assembly to end milling
• Root, submerged arc, and electroslag welding stations
• CNC end face milling for accurate beam ends
• Roller conveyor tracks and robotic conveying
• Active collision prevention
• Customisable to beam size, output, and features

Applications

• Box beams and box girders for buildings, bridges, and heavy infrastructure
• Shipbuilding components
• Structural beams for factories and warehouses
• Heavy machinery frames

Who This Machine Is For

• Steel structure and bridge fabricators producing box girders
• Shipbuilders and heavy machinery manufacturers
• Plants building a new box beam line or automating an existing one

Frequently Asked Questions

What sizes of box beam can the line make?
Sections from 300 × 300mm up to 1,200 × 1,200mm, in lengths up to 15m, with plate from 20 to 80mm thick.

What machines are in the line?
A diaphragm assembly machine, a box beam assembling machine, root welding, submerged arc welding, and electroslag welding machines, and a CNC end face milling machine, connected by roller conveyor tracks.

What welding processes does it use?
Submerged arc welding, electroslag welding, MIG, and twin-wire SAW for the web welds.

Can the line be customised?
Yes. Zhouxiang says it can be adapted to the dimensions, output, and features you need.

What is the warranty?
One year, with one year of after-sales service.

What is the production capacity?
Zhouxiang lists 15 sets per month.

Can I buy individual machines?
The page prices each machine separately, so it appears they can be bought individually, but please confirm with Zhouxiang.

Is financing or staged payment available?
Yes. A deposit secures your order and begins production, with the remaining balance due only once your machine has been built, inspected, and is ready to ship.

Should I buy new or used?
This line is available new, built to order.