Large Diameter Pipe Beveler

Large Pipe Edge Milling Machine

Heavy-duty pipe edge milling machines for large diameter pipes over 800mm. DMM-YG series features self-traveling design for processing stationary pipes with precision bevels.

Pipe Diameter >800mm

Wall Thickness 5-100mm

Bevel Width Up to 65mm

Models Available 2 Models

Available Drives:

DMM - Electric

Cold Cutting CE Certified 1-Year Warranty OEM Available

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Watch the DMM-YG series bevel large diameter pipe ends with precision

Overview

The DMM-YG Large Pipe Milling Series solves a problem that traditional pipe bevelers can’t: processing pipes too large to rotate or clamp conventionally. The machine travels around stationary pipe surfaces, milling precise bevels on pipes over 800mm diameter—common in offshore risers, power plant headers, and large-bore process piping.

Key Advantages

800mm+ pipe specialist — Self-traveling design for pipes too large for conventional clamps
Heavy wall capability — Process walls up to 100mm thick with YG-80
Code-compliant finish — Ra3.2-6.3 surface goes straight to fit-up
Adjustable angles — 0°-70° coverage for standard and specialty preps

Which Model Should You Choose?

For pipes up to 45mm wall thickness:
The DMM-YG-60 handles 5-45mm walls with 0°-60° bevel angles and up to 30mm bevel width. At 4000W and 310kg, it’s maneuverable enough for field work while delivering shop-quality results.

For heavy-wall pipes up to 100mm:
Choose the DMM-YG-80 for 6-100mm walls with 25°-70° angles and 65mm bevel width. The 6000W motor and 330kg frame handle the thickest offshore and power generation linepipe.

Where DMM-YG Excels

Situation	Why DMM-YG
Pipes over 800mm OD	No clamp required, self-traveling
Offshore risers	Heavy wall, corrosion-resistant
Power plant headers	Steam-rated alloys, critical welds
Fixed pipelines	Pipe stays stationary
Duplex/super duplex	Cold cutting, no HAZ

Real-world result: A pressure vessel factory replaced manual grinding with the DMM-YG-80 for large cylinder beveling—UT pass rate jumped from 75% to 97%, and bevel prep time dropped by over 70%. Read the full case study.

Technical Specifications Summary

Model	Wall Thickness	Bevel Width	Bevel Angle	Power	Weight
DMM-YG-60	5-45mm	Max 30mm	0°-60°	4000W	310kg
DMM-YG-80	6-100mm	Max 65mm	25°-70°	6000W	330kg

Operating Principle

Position machine on pipe surface
Clamp guide rail or magnetic base
Set bevel angle and depth
Engage auto-travel at 1.0-1.5m/min
Monitor as machine circles the pipe
Reverse direction for second pass if needed

The pipe stays fixed; the machine does the work.

Customization Options

Bevel Angle — Custom cutter angles manufactured to specification
Voltage — 380V/50Hz standard, other configurations available
Mounting — Magnetic base upgrade for additional stability
Control — Remote control pendant for safe operation

Model Comparison

Quick comparison of key specifications. For complete technical data, see full specifications .

Model	Plate/Wall Thickness (mm)	Bevel Width (mm)	Bevel Angle (°)	Power (W)
DMM-YG-60	5-45 mm	Max 30 mm	0-60 °	4000 W
DMM-YG-80	6-100 mm	Max 65 mm	25-70 °	6000 W

Need Complete Technical Specifications?

View all parameters including dimensions, tolerances, and downloadable datasheets.

View Full Specifications

Key Features

800mm+ Pipe Specialist

Self-traveling milling head rides on large-diameter pipe surfaces—the pipe stays fixed while the machine orbits.

Circumferential Auto-Travel

1.0-1.5m/min travel speed circles the pipe automatically; operators monitor progress rather than wrestling heavy equipment.

Ra3.2-6.3 Surface Finish

Cold milling produces code-compliant bevel surfaces—many applications skip the grinder and go straight to fit-up.

Adjustable Bevel Angles

YG-60 covers 0°-60°; YG-80 extends to 25°-70° for steeper weld preps on thick-wall risers and headers.

100mm Wall Thickness

YG-80 handles heavy-wall linepipe common in offshore and power generation—up to 65mm bevel width per pass.

Cold Cutting for Alloy Pipe

No heat input means no metallurgical damage—essential for duplex, super duplex, and chrome-moly alloys.

Industry Applications

Oil & Gas

Precision Pipe Preparation for Pipelines, Refineries & Offshore Platforms

Power & Energy

Boiler Tubes, Steam Lines & Energy Facility Piping

Shipbuilding

Marine Piping Systems & Offshore Vessel Construction

Pressure Vessels

Tanks, Boilers & Pressure Equipment Fabrication

Frequently Asked Questions

What is the minimum pipe diameter?

DMM-YG series is optimized for pipes over 800mm diameter where the pipe remains stationary and the machine travels around it.

How does it differ from split-frame cutters?

Split-frame cutters clamp around the pipe and rotate around it. DMM-YG is a milling machine that travels along the pipe surface, offering different cutting characteristics and surface finish.

Can it process both inside and outside bevels?

Yes, both ID and OD bevels can be processed without repositioning the workpiece. One pressure vessel factory uses the YG-80 for inside and outside bevels on 600mm+ cylinders—see the [case study](/guides/dmm-yg-80-pressure-vessel-case-study/) for details.

What surface finish is achieved?

Cold milling produces Ra3.2-6.3 surface finish, often eliminating the need for secondary grinding.

What power supply is required?

AC 380V 50Hz three-phase power. YG-60 uses 4000W, YG-80 uses 6000W.