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Subsea Hydraulic Diamond Wire Saw for Offshore Pipe Cutting

Product OverviewThe Subsea Hydraulic Diamond Wire Saw is a heavy-duty underwater cutting system designed for offshore pipeline cutting, platform decommissioning, subsea structural removal and other demanding marine cutting operations.Using a continuous-loop diamond wire as the cutting tool, the system is designed to cut pipes, casings, piles and large subsea structures where conventional rigid cutting tools may be difficult to deploy.The diamond wire travels around the workpiece and progressively cuts through the material while the hydraulic feed system maintains the cutting movement. This makes the system particularly suitable for large-diameter pipes, thick-wall structures and complex offshore cutting applications.The system uses hydraulic power for key operating functions. Depending on the model and project requirements, the equipment can incorporate hydraulic drive, feed and clamping mechanisms, diamond wire tensioning, automatic feed control, seawater pressure compensation and an ROV control interface.For example, the deepwater 618 configuration described in the technical documentation uses hydraulic rotary and feed motors together with a clamping cylinder, wire tensioning system, automatic feed system, buoyancy components, seawater pressure compensation and an ROV interface. A wide range of models is available for different pipe diameters and subsea working conditions, with cutting capacities extending from approximately 4 inches (101.6 mm) up to 102 inches (2590.8 mm) according to the supplied technical documentation. Technical SpecificationsModelCutting CapacityDimensions (L × W × H)WeightWater Depth*DWS 4164"–16" / 101.6–406.4 mm1850 × 870 × 275 mm270 kg≤2000 mDWS 6186"–18" / 152.4–457.2 mm2350 × 1300 × 1000 mm850 kg≤2000 mDWS 163016"–30" / 406.4–762 mm2234 × 1614 × 746 mm600 kgSee Note Typical Cutting ApplicationsSubsea Pipeline CuttingDesigned for cutting subsea pipelines during maintenance, modification, repair, removal and decommissioning projects.Offshore Platform DecommissioningSuitable for controlled cutting of structural components during offshore platform dismantling and decommissioning.Pile CuttingThe diamond wire system can be configured for cutting large subsea piles and other cylindrical structural components.Jacket Leg CuttingLarge-capacity models can be used for cutting offshore platform jacket legs and other large-diameter structures.Casing and Conductor CuttingSuitable for cutting casing, conductor and other tubular structures according to the selected saw size and diamond wire configuration.Riser CuttingCan be configured for offshore riser removal and modification projects.Large-Diameter Structural CuttingWith available cutting capacities up to approximately 102 inches / 2590.8 mm, the product range provides options for large offshore structures that exceed the capacity of smaller underwater cutting equipment. Subsea Repair and SalvageThe system can also be considered for underwater repair, emergency cutting, salvage and structural removal operations where controlled mechanical cutting is required. FeaturesHydraulic Drive SystemThe diamond wire saw uses hydraulic power for underwater cutting operations. Depending on the configuration, hydraulic functions can include the cutting drive, feed mechanism and clamping system.Hydraulic operation makes the system suitable for offshore and subsea applications where reliable power transmission and remote operation are required.Automatic Feed SystemSelected models incorporate an automatic feed system designed to maintain controlled cutting progress.The supplied technical documentation describes a system that monitors cutting motor pressure during operation. When abnormal wire loading or jamming occurs, the feed system can respond to the cutting condition to help maintain cutting performance and reduce the risk of wire breakage. 金刚石绳锯介绍2025.05Diamond Wire Tensioning SystemAn integrated wire tensioning mechanism allows the diamond wire to be installed, tensioned and replaced more efficiently.This system is particularly important for subsea applications where equipment access may be limited and reducing installation and service time can improve overall project efficiency.Hydraulic ClampingThe saw is designed to be secured to the pipe or structure through a dedicated clamping arrangement.A stable connection between the saw and workpiece helps maintain the intended cutting position during subsea operations.Anti-Jamming DesignSelected configurations incorporate anti-jamming measures intended to reduce the possibility of wire trapping during cutting.The supplied product documentation describes two approaches:Cutting Tension Monitoring monitors cutting conditions to prevent excessive diamond wire tension and reduce the risk of wire jamming or breakage.Mechanical Anti-Jamming Protection uses a mechanical wedge arrangement to help prevent movement of the cut structure from closing the kerf and trapping the diamond wire.

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Concrete Wire Saw

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Product Details

Product Overview

The Subsea Hydraulic Diamond Wire Saw is a heavy-duty underwater cutting system designed for offshore pipeline cutting, platform decommissioning, subsea structural removal and other demanding marine cutting operations.

Using a continuous-loop diamond wire as the cutting tool, the system is designed to cut pipes, casings, piles and large subsea structures where conventional rigid cutting tools may be difficult to deploy.

The diamond wire travels around the workpiece and progressively cuts through the material while the hydraulic feed system maintains the cutting movement. This makes the system particularly suitable for large-diameter pipes, thick-wall structures and complex offshore cutting applications.

The system uses hydraulic power for key operating functions. Depending on the model and project requirements, the equipment can incorporate hydraulic drive, feed and clamping mechanisms, diamond wire tensioning, automatic feed control, seawater pressure compensation and an ROV control interface.

For example, the deepwater 618 configuration described in the technical documentation uses hydraulic rotary and feed motors together with a clamping cylinder, wire tensioning system, automatic feed system, buoyancy components, seawater pressure compensation and an ROV interface.

A wide range of models is available for different pipe diameters and subsea working conditions, with cutting capacities extending from approximately 4 inches (101.6 mm) up to 102 inches (2590.8 mm) according to the supplied technical documentation.

Technical Specifications

Model	Cutting Capacity	Dimensions (L × W × H)	Weight	Water Depth*
DWS 416	4"–16" / 101.6–406.4 mm	1850 × 870 × 275 mm	270 kg	≤2000 m
DWS 618	6"–18" / 152.4–457.2 mm	2350 × 1300 × 1000 mm	850 kg	≤2000 m
DWS 1630	16"–30" / 406.4–762 mm	2234 × 1614 × 746 mm	600 kg	See Note

Typical Cutting Applications

Subsea Pipeline Cutting

Designed for cutting subsea pipelines during maintenance, modification, repair, removal and decommissioning projects.

Offshore Platform Decommissioning

Suitable for controlled cutting of structural components during offshore platform dismantling and decommissioning.

Pile Cutting

The diamond wire system can be configured for cutting large subsea piles and other cylindrical structural components.

Jacket Leg Cutting

Large-capacity models can be used for cutting offshore platform jacket legs and other large-diameter structures.

Casing and Conductor Cutting

Suitable for cutting casing, conductor and other tubular structures according to the selected saw size and diamond wire configuration.

Riser Cutting

Can be configured for offshore riser removal and modification projects.

Large-Diameter Structural Cutting

With available cutting capacities up to approximately 102 inches / 2590.8 mm, the product range provides options for large offshore structures that exceed the capacity of smaller underwater cutting equipment.

Subsea Repair and Salvage

The system can also be considered for underwater repair, emergency cutting, salvage and structural removal operations where controlled mechanical cutting is required.

Features

Hydraulic Drive System

The diamond wire saw uses hydraulic power for underwater cutting operations. Depending on the configuration, hydraulic functions can include the cutting drive, feed mechanism and clamping system.

Hydraulic operation makes the system suitable for offshore and subsea applications where reliable power transmission and remote operation are required.

Automatic Feed System

Selected models incorporate an automatic feed system designed to maintain controlled cutting progress.

The supplied technical documentation describes a system that monitors cutting motor pressure during operation. When abnormal wire loading or jamming occurs, the feed system can respond to the cutting condition to help maintain cutting performance and reduce the risk of wire breakage.

Diamond Wire Tensioning System

An integrated wire tensioning mechanism allows the diamond wire to be installed, tensioned and replaced more efficiently.

This system is particularly important for subsea applications where equipment access may be limited and reducing installation and service time can improve overall project efficiency.

Hydraulic Clamping

The saw is designed to be secured to the pipe or structure through a dedicated clamping arrangement.

A stable connection between the saw and workpiece helps maintain the intended cutting position during subsea operations.

Anti-Jamming Design

Selected configurations incorporate anti-jamming measures intended to reduce the possibility of wire trapping during cutting.

The supplied product documentation describes two approaches:

Cutting Tension Monitoring monitors cutting conditions to prevent excessive diamond wire tension and reduce the risk of wire jamming or breakage.

Mechanical Anti-Jamming Protection uses a mechanical wedge arrangement to help prevent movement of the cut structure from closing the kerf and trapping the diamond wire.