Fully Automatic Pipe Cutting Production Line

Product Overview

This is a fully automatic pipe cutting production line for steel pipe, a CNC sawing line where pipe goes in at one end and comes off the other as cut lengths, at a rate set by the pipe size and the length being cut; the full diameter and length window sits in the specification table below. It is a cutting station built for fire-pipe work rather than a hand-fed chop saw with a digital readout, and the difference shows in how little of the shift goes on handling pipe.

In the workshop, feeding the next station

Most of these lines go into fire water pipe prefabrication shops, where the saw is the first station and the cut lengths move on to threading or grooving. It can be installed as a fixed line with a fully automatic double head threading machine connected downstream, so pipe travels from the saw to the threader without being re-handled. It can equally run on its own, with threading and grooving handled by separate machines elsewhere in the shop.

Moved to the project when pipe is cut to fit

The bed sits on a long rail-mounted frame, with the drive motor and control panel carried on the machine. That is what makes on-site short steel pipe cutting for fire protection piping practical: the contractor sets the line up where the pipe is being installed, cuts to fit, and does not haul finished lengths to site. For small batches of short pieces the machine can also be run semi-automatically.

What the operator works with

A long horizontal bed, a carriage running on guide rails, clamp assemblies along the work line and white access panels down the side. The control panel sits at the operator position, with the blade entry in clear view.

Who the line suits

Fire protection pipe shops replacing manual cutting, MEP contractors fabricating on site, and agents putting together a threading and grooving package. As an automatic pipe cutting line manufacturer, COORIG will look at your pipe schedule and tell you whether this line or a standalone saw is the better buy.

Automation & CNC Control

• Automatic loading and unloading. Pipe is brought onto the bed and the finished cut length leaves it without an operator standing at the blade for every piece, so one person can supervise the line, keep the pipe rack fed and check the first piece of each batch.
• A fully digitised cutting cycle. This is a fully automatic pipe cutting production line in the sense that matters on the floor: feed length, clamping, the cut and the release are all positions in the CNC program, not mechanical stops that have to be re-set by hand.
• A mixed cutting list in one run. Several diameters, sizes and quantities can be entered together, so a schedule with many different cut lengths runs through without stopping to re-program between items.
• Built-in tail cutting. At the end of a stock bar the tail-cut function takes the last usable piece out of the remnant instead of scrapping it, which is where a manual saw quietly loses material every day.
• A touch-based human-machine interface. Batches are entered and alarms are read on the 12-inch Weilun screen; operators pick it up quickly and maintenance can reach the machine parameters without a laptop.
• Automatic alarm diagnosis. When a cycle does not complete or a value is out of range, the control reports the area at fault, so a technician goes straight to the cause instead of working through the machine from one end to the other.

Cut Cycle & Clamping

1. Load and index. Pipe is fed onto the bed and moved to the start position for the first cut.
2. Pull to length. The carriage pulls the pipe forward to the cut length set for that item in the program, a repeatable stop that on-site short steel pipe cutting for fire protection piping depends on.
3. Clamp with the pipe protected. The fixture holds the pipe for the saw; the clamp design keeps the pipe surface clear of the blade and the bed so it is not scratched or knocked, and the piece releases smoothly afterwards.
4. Saw head engages. The cutting head is built from multiple sets of fully geared gearboxes, running under a CNC-controlled automatic oil lubrication system that keeps the gear train fed through a long shift.
5. Coolant-assisted sawing. The line cuts with a saw blade, standard range Ø315-400 mm, and a cooling system, so the sawn end goes on to threading or grooving without a second preparation step.
6. Swarf and offcuts collected. Sawdust and material heads go to a central collection point rather than spreading along the bed, which keeps the working area clear and the end-of-shift clean-up short.

Technical Specifications

Mitsubishi Control Package

On this fully automatic pipe cutting production line the electrical architecture is Mitsubishi: a Mitsubishi PLC runs the sequence and a 1 kW Mitsubishi servo drives the length-setting carriage. In practice the cutting programme, meaning the order of load, clamp, cut and release plus the length for each item, lives in the controller, so moving to a different pipe size or cut length is an edit to that programme rather than a physical adjustment on the machine.

A PLC-based control also changes how faults get handled. Input and output states are visible at the controller, so when a clamp does not close or a cut does not start, a technician can see which condition is missing instead of tracing wires through the cabinet. In a fire water pipe prefabrication shop running to a dispatch date, that is the difference between a stop that gets diagnosed and a stop that turns into a guessing game.

The rest of the cabinet is a matched electrical set, with Chint used for the other electrical appliances, so contactors, breakers and terminals are standard parts a local electrician can replace. That matters more than it sounds: an unbranded control cabinet is where overseas buyers end up waiting on a shipment for a small component.

Mitsubishi is one of the most widely supported control brands in industrial markets, so a drive or PLC module can usually be sourced through local distribution rather than shipped from China. Tell us the control platform your maintenance team already runs and we will confirm what your build can be supplied with; the exact part references for your machine come with the order documents.

Taiwan Shangyin Motion Components

• Ball screw sets the cut length. The carriage that positions the pipe moves on a ball screw, turning motor rotation into linear travel; the screw's job is to stop in the same place every time the program asks for the same length.
• Linear guide rail carries the carriage. The moving assembly runs on a linear guide rail rather than a sliding way, so it stays square to the blade and does not develop the slack that later shows up as an angled cut face.
• Rolling motion at slow feed. Recirculating balls give low-friction movement, which matters at the slow speeds used for final role: the carriage settles at the length instead of sticking and releasing past it.
• Replaceable by name. Taiwan Shangyin is the specified brand for both the ball screw and the guide rail, so when either reaches the end of its life the part is ordered by name and reference rather than matched by measurement.
• Wear shows as length drift. If cut lengths start creeping across a batch during on-site short steel pipe cutting for fire protection piping, the rail and screw are the first things to check; a dry or worn rail usually shows as a jerky carriage before it produces a visibly bad cut.

Ordering & Confirmation

1. Send the pipe schedule. Diameters, cut lengths and the number of pieces you expect per shift, plus whether the line will sit in a workshop or travel between sites. If it is going to site, say so at this stage, because it changes how the machine is set up and how it is moved.
2. Confirm the configuration. Blade specification for the pipe you run, control package, and whether the saw will feed a threading machine in line or work on its own.
3. Check the floor and the utilities. The bed is long, so the layout needs room to feed stock in at one end and take cut lengths away at the other. Send your floor plan, access route and available power and we will confirm the layout drawing and connections for your configuration.
4. Agree the commercial terms. Price, payment terms, lead time, packing and shipping are set out in your quotation; confirm each of them with your sales contact before the order is released.
5. Plan commissioning and training. Agree who attends installation and commissioning, who trains the operators on batch entry, and which spares to hold from day one: blades, lubrication consumables and the parts most exposed in daily use.
6. Ask about service and parts in your market. Your sales contact can tell you the current service route, the spare-parts list and the documents that come with the machine, so the maintenance plan is in place before it lands.

Maintenance & Length Accuracy

• Oil is the first habit. The saw head runs on multiple sets of fully geared gearboxes fed by a CNC-controlled automatic oil lubrication system through a VP-40 dual pump. Check the reservoir each shift and confirm the pump cycles; a gear train running short of oil is the fastest route to a rough cut face and a saw head that has to come apart.
• Wipe the carriage rail. The carriage travels on a Taiwan Shangyin ball screw and linear guide rail, and swarf or dried coolant on that rail is what turns into a jerky movement, then into length drift across a batch. A wipe-down and a light film of oil at the end of the shift costs a minute.
• Watch the blade, not just the counter. Change a blade when the cut face starts tearing or the saw loads up in the cut, and cut one test piece after every blade change before you release the batch.
• Keep the cooling system and collection point clear. Top up coolant, and empty the central collection point for sawdust and material heads before it backs up; a full box spreads swarf along the bed and into the clamp area.
• Measure the first piece of every run. New program, new pipe size, start of shift — cut one piece, measure it, write the reading in a log. Length drift then shows up as a number in the book rather than as a complaint from the threading station two days later.
• Re-reference after a move. When the line is taken to site, check it is level and re-zero the length reference, then cut a test piece before production starts.
• Use the alarm diagnosis instead of overriding it. The control reports the area at fault, so note the code and what the machine was doing at the time. The same alarm appearing twice is a warning, not an inconvenience.
• Hold a small spares kit from day one: saw blades for the pipe you run, lubrication oil, coolant, and the clamp and carriage wear parts most exposed in daily use. Ask your sales contact for the recommended spares list for your build, and for the maintenance schedule that suits a fire water pipe prefabrication shop running the line across two shifts.

Scale & Supply Capability

Tianjin Coorig Technology Co., Ltd. has been building sheet metal and MEP prefabrication equipment since 2004, with a team of around 200 people working from our own factory in Tianjin, China. In more than 20 years we have supplied buyers in over 35 countries — processing plants, mechanical installation contractors and agents — and we look after export, documentation and shipping as a one-stop service. A database of 3,000+ qualified suppliers, in-house quality control and our automated manufacturing systems keep build quality and delivery predictable. Reference work includes the Beijing Olympic Games, Egypt CBD, Guangzhou Baiyun Airport and BYD's European Center.

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