Large Hydraulic Butt Fusion Machine 630mm

Large hydraulic butt fusion welding machine 400-630 mm, 7.5 kW heating plate, 0-6.3 MPa hydraulic pressure, semi-automatic control for mainline pipe.

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Category: Welding Machine

Welding Machine

Product Overview

The Large Hydraulic Butt Fusion Machine 630mm is a heavy-duty welding system designed for joining large-diameter HDPE and PE pipes from 400mm to 630mm. This Large Hydraulic Butt Fusion Machine 630mm features a 7.5KW hot plate, a 1.5KW planning tool, and a 1.5KW hydraulic power station, delivering the high fusion pressure and heating capacity required for thick-walled large-diameter pipe welding.

Engineered for municipal and industrial pipeline construction, the Large Hydraulic Butt Fusion Machine 630mm achieves butt fusion alignment accuracy of ≤0.75mm and temperature accuracy of ±3°C. The BFY400 model operates on 380V three-phase power and has a gross weight of 440kg with a shipping volume of 3 cubic meters.

Quick Information

Model: BFY400
Welding Range: 400-630mm
Alignment Accuracy: ≤0.75mm
Temperature Accuracy: ±3°C
Hot Plate Power: 7.5KW / 380V
Planning Tool Power: 1.5KW / 380V
Hydraulic Station Power: 1.5KW / 380V
Gross Weight: 610KG

Specification Table

Model	BFY400
Welding Range	400-630mm
Alignment Accuracy	≤0.75mm
Temperature Accuracy	±3°C
Hot Plate Power	7.5KW / 380V
Planning Tool Power	1.5KW / 380V
Hydraulic Station Power	1.5KW / 380V
Gross Weight	610KG

Key Features

Large Diameter Capacity – The Large Hydraulic Butt Fusion Machine 630mm handles pipe diameters from 400mm to 630mm, covering the largest HDPE pipe sizes used in major municipal and industrial pipeline projects.
High-Power Heating System – 7.5KW hot plate provides sufficient thermal energy to heat thick-walled large-diameter pipe ends to fusion temperature within the specified cycle time.
Precise Alignment Control – Hydraulic clamping system achieves butt fusion alignment accuracy of ≤0.75mm, critical for producing defect-free welds on large-diameter, high-pressure-rated pipes.
Three-Phase Power – Operates on 380V three-phase power supply, delivering stable high-power output for the hot plate, planning tool, and hydraulic station simultaneously.
Heavy-Duty Construction – At 440kg gross weight, the Large Hydraulic Butt Fusion Machine 630mm features a reinforced steel frame designed to handle the substantial forces involved in welding SDR17 and SDR11 large-diameter pipes.
Integrated Hydraulic Station – 1.5KW hydraulic power unit provides independent pressure control, allowing operators to adjust fusion pressure precisely for different pipe materials and wall thicknesses.

Production

Raw Material

The Large Hydraulic Butt Fusion Machine 630mm frame is fabricated from Q345B low-alloy structural steel plate with a minimum yield strength of 345MPa. The hot plate core is forged aluminum alloy with machined flat surfaces and PTFE non-stick coating. Hydraulic cylinders are machined from 45# forged steel with chrome-plated rods.

Molding Process

Steel frame components are plasma-cut from plate stock and submerged-arc welded for deep penetration structural welds. The hot plate surface is machined flat to 0.1mm tolerance across the full 630mm width. Hydraulic cylinder bores are honed to Ra 0.4 surface finish for consistent pressure application without seal wear.

Quality Control

Each Large Hydraulic Butt Fusion Machine 630mm undergoes full-pressure hydraulic testing at maximum operating pressure for 60 minutes. Hot plate temperature uniformity is verified at 9 measurement points across the 630mm surface. The planning tool is tested for cutting flatness on SDR11 PE100 630mm pipe samples. Final QC includes a complete butt fusion weld test with destructive peel and tensile testing.

Applications

Municipal Water Transmission – Installing large-diameter HDPE water transmission mains using the Large Hydraulic Butt Fusion Machine 630mm for high-pressure-rated butt welds on 400-630mm pipes.
Industrial Process Pipelines – Joining large HDPE chemical, cooling water, and process fluid lines in power plants, steel mills, and chemical processing facilities.
Marine and Submarine Pipelines – Welding HDPE submarine outfall and intake pipelines where large diameters handle high flow volumes in marine environments.
Wastewater Treatment Plants – Constructing large-diameter HDPE sewer force mains and treatment plant process piping networks.
Mining and Slurry Lines – Joining abrasion-resistant HDPE slurry transport pipelines in mining operations, where large diameters accommodate high-volume slurry flow.