Zhejiang Wellnit Machinery Manufacturing Co., Ltd.
Specializes in the production of electric, pneumatic, hydraulic, CNC, and explosion-proof groove cutting machinery. With years of manufacturing experience, Wellnit has earned strong recognition in both domestic and international markets through consistent quality and comprehensive service. Our ten major product series — spanning dozens of models — are exported to more than 60 countries and regions across Europe, the Americas, the Middle East, and Southeast Asia, and are certified under the ISO 9001 international quality management system. Wellnit's equipment is trusted in pipeline installation and maintenance across the petroleum, power, steel, chemical, shipbuilding, natural gas, nuclear, and pressure vessel industries — and increasingly applied to offshore decommissioning and subsea cutting projects worldwide.
-
![Articulating Diamond Wire Saws]()
Articulating Diamond Wire SawsOur portable articulating diamond wire saw was built for tough cuts in hard-to-reach places -
![In-line Diamond Wire Saws]()
In-line Diamond Wire SawsOur portable in-line diamond wire saws boast the industry’s largest cutting range and a compact design.((30” to 120” cuts — ROV friendly!)) -
![Cut-off Diamond Wire Saws]()
Cut-off Diamond Wire SawsOur portable in-line diamond wire saws boast the industry’s largest cutting range and a compact design.
What is diamond wire saws？
Wellnit's diamond wire saws are engineered for precision cutting of steel, concrete, and other challenging materials in demanding subsea and topside environments. Using a continuous loop of diamond-embedded wire, our saws deliver clean, controlled cuts even under structural movement or tension, without relying on hot work methods like torch cutting or grinding. Built for offshore decommissioning, pipeline replacement, and platform structural cutting, our diamond wire saw range covers everything from tight-space cut-off jobs to large-diameter pile and pipe cutting. Whether operated by divers or deployed via ROV, Wellnit diamond wire saws are designed to perform reliably in the harshest marine conditions.
Our Product Types
Articulating Diamond Wire Saws — Designed for low-clearance, tight-access cutting such as multi-string casing, heavy wall legs, and cofferdam-free excavation work
In-line Diamond Wire Saws — Built for large-diameter cutting applications, including subsea piles, mooring chains, and marine structures
Cut-off Diamond Wire Saws — Compact, lightweight, and diver-friendly, ideal for tight spots and quick-turnaround jobs
Materials
Wellnit diamond wire saws are engineered to cut through a wide range of materials, including:
Carbon steel and alloy steel pipe/casing
Stainless steel structures
Reinforced concrete
Composite and mixed-material structures (e.g., steel combined with concrete or grout)
Applications
Offshore platform decommissioning
Conductor and casing removal
Subsea pipeline replacement and repair
Mooring chain and bridge piling cutting
Marine construction and structural cutting
Topside maintenance of oil and gas platforms
FAQ
Q: In what situations can you use a diamond wire saw?
A: Project Location: Topside / On-site (refineries, power plants, civil infrastructure) or Offshore / Subsea (oil & gas decommissioning).
Q: If it's underwater work, what should you watch out for?
A: Water Depth: If subsea, provide the maximum water depth to determine if it requires diver operation or ROV (Remotely Operated Vehicle) compatibility (ROV handles, hot stabs). Clearance Constraints: Specify the available physical space around the target.
Q: What materials can a diamond wire saw cut?
A: Material type: Describe the structure being cut (for example, multi-layer casing, offshore conductor, thick-walled leg, mooring chain, embedded steel caisson, or reinforced concrete structure). Material composition: Give details about the specific layers (for example, 2-inch steel plate wrapped with high-density concrete and internal grout).
Q: What's the cutting range of a diamond wire saw?
A: Cutting range: Ø 4.5″（114mm）-Ø 120″ (3048mm)
Q: What types of drive systems are there?
A: Drive: Hydraulic Requirements
Q: How do I apply for a quote for diamond wire saws?
A: Contact us via email at wellnit@foxmail.com, or reach out through WhatsApp at +86 180 5888 0099—feel free to get in touch anytime. Please specify the type of product you need, quantity per item, strength grade (if any), surface treatment requirements, delivery location, and the required delivery date. Our engineering and sales team will provide technical confirmation and a quote within 24 hours.
Q: What's the minimum order quantity and delivery time?
A: The minimum order is one standard machine. Whether it's a single sample order or a full batch project purchase order, we can accept and handle it, all under the same quality management system. For in-stock products, we ship within 3-5 working days after payment. For large orders, the standard delivery time is about 30 days from order confirmation to receipt of the advance payment, and a detailed production and delivery schedule will be provided at the time of order confirmation.
Q: How long is your warranty?
A: All machines from Wellnit come with a 12-month warranty, and the motors are covered for 3 months, starting from the delivery date. We offer 24-hour tech support, and you can reach us on WhatsApp (+86 18058880099).
As one of the leading diamond wire saws manufacturers and suppliers in China, we warmly welcome you to wholesale high-grade diamond wire saws for sale here from our factory. All customized machines are with high quality and low price.
Popular Products
