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2. Microtunneling - Wikipedia

   en.wikipedia.org/wiki/Microtunneling

   Microtunneling or microtunnelling is a tunnel construction technique used to construct utility tunnels from approximately 0.5–4 m (1 ft 8 in – 13 ft 1 in) in diameter. Because of their small diameter, it is not possible to have an operator driving the tunneling machine, so they have to be remotely operated. [1] Micro tunnel boring

3. Tunnel boring machine - Wikipedia

   en.wikipedia.org/wiki/Tunnel_boring_machine

   A tunnel boring machine (TBM), also known as a "mole" or a "worm", is a machine used to excavate tunnels. Tunnels are excavated through hard rock, wet or dry soil, or sand, each of which requires specialized technology. Tunnel boring machines are an alternative to drilling and blasting (D&B) methods and "hand mining".

4. Annular cutter - Wikipedia

   en.wikipedia.org/wiki/Annular_cutter

   Annular cutters can also be used to make holes in pipes and tubes without dimpling and deburring. To make a hole in a tube or pipe easily an annular cutter should be used with a magnetic base drilling machine and a tube/pipe clamping device. The tube clamping device is a metallic device that is clamped on the tube with an adjustable chain.

5. Tube tool - Wikipedia

   en.wikipedia.org/wiki/Tube_tool

   To eliminate tube cutting chips in the vessel, tubes should be scored and not totally cut through. The tube cutter needs to have sufficient reach to cut behind the tube sheet. Proper lubrication and cutting speed will increase cutting blade life. Tube Pullers- Used to break the seal and pull expanded tubes from a tube sheet. A spear or ...

6. Water jet cutter - Wikipedia

   en.wikipedia.org/wiki/Water_jet_cutter

   Typical water jet cutting machines have a working envelope as small as a few square feet, or up to hundreds of square feet. Ultra-high-pressure water pumps are available from as low as 40,000 psi (280 MPa) up to 100,000 psi (690 MPa). [44] There has also been a growth in small, desktop-sized machines that operate at pressures under 10kpsi.

7. Pipecutter - Wikipedia

   en.wikipedia.org/wiki/Pipecutter

   Pipecutter Cutting copper pipe with a close quarters tubing cutter. A pipecutter is a type of tool used to cut pipe. Depending on the metal of the pipe, a pipecutter can often provide a faster, cleaner and more convenient way of cutting pipe than using a hacksaw. There are two types of pipe cutters.