HF50 High Frequency ERW Tube Mill for Scaffolding Pipe (19-76mm) | Kingtech, Foshan, China

The HF50 is a high-frequency ERW (electric resistance welded) tube mill designed for producing round scaffolding pipe. It makes steel tube from 19mm to 76mm in diameter, with wall thicknesses from 0.8mm to 3.25mm, at production speeds between 20 and 100m/min. It can also produce square and rectangular tube, from 15 × 15mm up to 60 × 60mm and from 10 × 20mm up to 40 × 80mm.

Kingtech says the mill can be configured for standard 48.3mm scaffolding tube and is designed for pipe used in ringlock, frame, and cuplock scaffolding, construction platforms, and other temporary structural systems. Different tube sizes are produced by changing the roll tooling within the mill's designed range, and Kingtech makes the roll tooling itself.

The mill is supplied as a complete line, from uncoiling through forming, welding, sizing, and cutting to the run-out table, with a 160kW main motor and 200kW of high-frequency welding power.

How the Line Works

The complete process for this mill runs in this order:

Steel strip coil → uncoiler → strip cutting and butt welding → accumulator → strip feeding and forming → high-frequency welding → external weld bead removal → cooling water tank → sizing and straightening → flying saw cutting → run-out table → manual stacking and bundling → inspection → warehousing

The high-frequency welding system joins the formed strip edges continuously along the length of the tube, giving a stable longitudinal weld. Because a vertical accumulator stores strip while coils are changed and joined, the line can keep running through coil changes.

Why Choose a Dedicated Scaffolding Tube Mill?

Scaffolding tube is made in very large quantities at fairly consistent sizes, and a mill matched to that job can run at high speed with little fuss.

• High output. Speeds of up to 100m/min suit high-volume scaffold tube production.
• Covers standard scaffold sizes. The 19 to 76mm range includes the common 48.3mm scaffold tube.
• Flexible tooling. Changing roll sets lets one mill produce different tube sizes within its range.
• Complete line. Uncoiler, accumulator, mill, saw, and unloading platform come as a set.
• Support included. Kingtech provides installation, commissioning, operator training, and technical support.

Machine Specifications

• Model: HF50
• Round pipe diameter: 19mm to 76mm
• Round pipe wall thickness: 0.8mm to 3.25mm
• Square pipe size: 15 × 15mm to 60 × 60mm
• Rectangular pipe size: 10 × 20mm to 40 × 80mm
• Square/rectangular wall thickness: 0.8mm to 2.5mm
• Production speed: 20 to 100m/min
• Main motor power: 160kW
• High frequency power: 200kW
• Material: carbon steel coil, galvanised steel coil, other hot or cold rolled steel coil

Machine configuration

• Double-side uncoiler
• Steel strip cutter
• Vertical material accumulator
• Forming and sizing machine
• Pipe cutting saw (cold cutting or friction cutting)
• Pipe unloading platform
• Rolling moulds
• High frequency appliances

Stated delivery time: 70 to 80 days for the HF45 to HF50 range (per Kingtech's website)
Condition Available: New

Key Features

• Continuous high-frequency welding for a stable longitudinal weld
• Speeds of 20 to 100m/min
• 19 to 76mm round tube, plus square and rectangular tube
• Runs on carbon steel, galvanised, and hot or cold rolled coil
• Complete line with uncoiler, accumulator, saw, and unloading platform
• Roll tooling designed and made by Kingtech
• Installation, commissioning, and operator training available

Applications

• Ringlock scaffolding tube
• Frame scaffolding tube
• Cuplock scaffolding tube
• Construction platforms and other temporary structural systems

Who This Machine Is For

• Scaffolding manufacturers who want to make their own tube
• Tube producers moving into the scaffold market
• Steel pipe makers looking for a high-speed, complete mill line

Frequently Asked Questions

Can it make standard 48.3mm scaffolding tube?
Yes. Kingtech says the mill can be configured for 48.3mm tube with the required wall thickness and production specifications.

What tube sizes can it produce?
Round tube from 19mm to 76mm in diameter and 0.8 to 3.25mm wall thickness, plus square and rectangular tube within the sizes listed above.

How fast does it run?
Between 20 and 100m/min, depending on tube diameter, wall thickness, material, and the required weld quality.

Can one mill make different sizes?
Yes. Different tube sizes are made by changing the roll tooling and adjusting the mill configuration, within its designed range. Kingtech designs and makes the roll tooling.

What steel can it use?
Carbon steel coil, galvanised steel coil, and other hot or cold rolled steel coil.

What is included in the line?
A double-side uncoiler, strip cutter, vertical accumulator, forming and sizing machine, cutting saw (cold or friction), unloading platform, rolling moulds, and high frequency appliances.

Is installation and training provided?
Yes. Kingtech provides installation, commissioning, operator training, and technical support according to the project.

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 model is available new, built to your tube specification.