Automatic Round and Square Pipe Polishing Machine | Stainless Steel Tube Grinding and Buffing – PUTAI Tianjin, China

PUTAI Automatic Round and Square Pipe Grinding and Polishing Machine – Stainless Steel Tube Finishing Line

The PUTAI automatic pipe polishing machine gives metal tubes a smooth, bright and uniform outer finish in one continuous pass. Ten grinding and polishing heads work along the tube as it feeds through at up to 50 m/min, removing rust, scale, scratches, weld seams and oxidation while improving both appearance and corrosion resistance. With automatic loading, an enclosed polishing unit and built-in automatic waxing, it is designed for stainless steel tube mills, furniture and handrail makers, and fabricators who need consistent, high-volume surface finishing.

What Does a Pipe Polishing Machine Do?

• Removes surface defects such as rust, scale, scratches, weld seams and oxidation
• Produces a smooth, bright and uniform finish along the full tube length
• Improves corrosion resistance by leaving a clean, even surface
• Replaces slow, inconsistent manual polishing with an automatic process

Key Features

• Fully automatic operation from loading to discharge
• 10 grinding and polishing heads for progressive finishing in a single pass
• Variable polishing speed from 0 to 50 m/min
• Handles tube diameters from φ16 to φ50 mm and lengths from 4 to 7 m
• Enclosed polishing unit with built-in automatic waxing that works with the doors closed, greatly reducing dust leakage
• Pneumatic tube loading rack drops tubes into the feed hopper and pushes them onto the conveyor in sequence
• Heavy-duty housing with a 20 mm tabletop and 10 mm side panels to absorb vibration from out-of-round or bent tubes
• Adjustable settings to suit different tube sizes and finishes

Technical Specifications

• Operation: Fully automatic
• Number of grinding heads: 10
• Polishing speed: 0 – 50 m/min
• Tube diameter: φ16 – φ50 mm
• Tube wall thickness: 0.3 – 2.0 mm
• Processing length: 4 – 7 m
• Wheel mounting diameter: 140 – 350 mm
• Spindle diameter: φ36 mm
• Grinding head spindle material: 40Cr steel
• Intermediate support: φ50 rubber wheel
• Housing: 20 mm tabletop, 10 mm side panels

How the Machine Works

• Loading: Pneumatic cylinders lower tubes from the loading rack into the feed hopper
• Feeding: A pneumatic pusher places tubes one by one onto the motor-driven conveyor, which feeds them into the machine
• Grinding and polishing: Tubes pass through 10 heads in sequence, each refining the surface further
• Automatic waxing: Polishing compound is applied automatically inside the enclosed unit, replicating skilled manual waxing
• Discharge: Finished tubes exit with a consistent, bright finish

Suitable Materials

• Stainless steel
• Carbon steel
• Aluminium
• Brass
• Titanium

Applications

• Stainless steel tube and pipe mills
• Handrails, balustrades and railings
• Furniture tubes and frames
• Kitchen equipment and appliance tubing
• Decorative and architectural tube products
• Automotive and bicycle tubing

Frequently Asked Questions

• What tube sizes can the machine polish? Diameters from φ16 to φ50 mm, wall thickness from 0.3 to 2.0 mm, and lengths from 4 to 7 m.
• Can it polish square tube as well as round? Yes, the machine is offered for both round and square tube. Share your square tube sizes with PUTAI to confirm the head setup.
• How many polishing stages are there? Ten grinding and polishing heads, allowing coarse grinding through to a fine bright finish in one pass.
• How is dust controlled? The polishing unit is fully enclosed, and the automatic waxing system works with the doors closed, which keeps dust inside the machine.
• Does it need an operator to load each tube? No. The pneumatic loading rack and conveyor feed tubes automatically.
• Why is the housing so heavy? Bent or out-of-round tubes and wheel eccentricity create strong vibration. The thick tabletop and side panels keep the machine stable for a consistent finish and long service life.
• What should I send for a quotation? Tube material, shape, sizes, wall thickness, length, the finish you need, and your local voltage and frequency.