GSK CNC Pipe Threading Lathe Machines are designed for manufacturers that need stable turning and threading of pipes, tubes, drill rods, couplings and other long cylindrical components. The QK series combines a large spindle bore, front and rear workholding, CNC-controlled threading and a rigid horizontal lathe structure to handle pipe work that is difficult to process efficiently on a conventional CNC lathe.
The series covers applications from smaller pipe threads to large-diameter industrial and oilfield components. Internal and external threads, metric and inch threads, taper threads, boring, facing and general turning can be incorporated into the machining process according to the selected model and configuration.
For pipe machining, the first selection criteria should normally be the required pipe threading range, spindle bore, workpiece length and load. Choosing only by swing diameter can result in a machine that cannot pass or clamp the actual pipe correctly.
| Model | Pipe Threading Range | Swing Over Bed | Distance Between Centers | Max. Load | Typical Selection |
|---|---|---|---|---|---|
| QK1313 | 30–126 mm | 630 / 800 mm | 1000–6000 mm | 3 T | Smaller pipe and threaded components |
| QK1319 | 50–193 mm | 630 / 800 mm | 1000–6000 mm | 3 T | Drill pipe, tubing and couplings |
| QK1322 | 50–220 mm | 630 / 800 mm | 1000–6000 mm | 3 T | Medium pipe threading applications |
| QK1325 | 50–250 mm | 800 / 1000 mm | 1000–6000 mm | 4 T | Heavier pipe and industrial fittings |
| QK1327C | 50–270 mm | 800 / 1000 mm | 1000–6000 mm | 4 T | Larger pipe and long workpieces |
| QK1338 | 190–380 mm | 1000 mm | 1500 / 3000 mm | 6 T | Large-diameter heavy pipe work |
| QK1343 / QK1350 / QK1363 | Heavy-duty models for larger pipe diameters. Final machining range and configuration should be selected according to your pipe drawing and project requirements. | Large pipe / heavy-duty projects | |||
Specifications may vary by configuration. Send your pipe outside diameter, length, material and thread specification for final model confirmation.
A CNC pipe threading lathe machine is a horizontal CNC lathe developed specifically for turning and threading tubular workpieces. Unlike a standard CNC lathe that is mainly selected around chuck diameter and swing, a pipe threading machine uses a large spindle through-hole and pipe-supporting workholding system so long tubular material can pass through the headstock.
The GSK QK series can perform internal and external pipe threading while retaining common CNC turning functions such as end facing, outside diameter turning and bore machining. This makes the machine suitable for both new component production and repair work on drilling pipes, threaded couplings and other industrial pipe components.
The large through-spindle design allows pipe and tube stock to pass through the headstock. This is a key difference between a dedicated pipe threading CNC lathe and a general-purpose CNC turning machine.
Double workholding supports long pipe stock at both sides of the spindle area. Stable clamping helps reduce pipe movement and vibration during thread cutting, facing and heavy turning.
GSK QK-series specifications use a high-strength one-piece iron bed to provide the structural support required for long workpieces and pipe-thread cutting loads.
Ultrasonic-frequency quenched guideways are used to improve wear resistance. The carriage and guideway contact design is intended to maintain stable movement during repeated industrial machining.
CNC synchronization of spindle rotation and axis feed enables repeatable thread production and reduces dependence on manual thread-cutting adjustment.
In addition to pipe threading, the machine can be configured for facing, OD turning, internal bore machining and other common CNC lathe operations required before or after thread production.
The QK-series CNC pipe thread lathe machines are designed for a wider range of threading work than simple straight-thread production. Depending on tooling, CNC programming and the selected machine configuration, the series can process:
If your production requires a specific oil-country, casing, tubing or proprietary connection profile, send GSK the thread drawing or required standard before ordering. Our technical team can confirm the suitable machine, tooling and CNC configuration instead of relying only on a model number.
Long pipe stock behaves differently from a short solid shaft. If the pipe is supported only on one side, overhang and rotation can increase vibration and make stable thread cutting more difficult.
A double chuck CNC lathe supports the pipe around the spindle from both sides. This provides more stable workholding for long tubular workpieces and makes the configuration particularly useful for oil tubing, casing, drill pipe and industrial steel pipe.
Threading and turning of oilfield tubing, casing, drilling pipe, drilling rods and threaded couplings where long workpieces and reliable connection geometry are required.
End machining and threading of seamless or welded steel pipe used in industrial pipeline and equipment manufacturing.
Machining of pipe connections and threaded tubular components used in chemical processing, energy transmission and industrial piping systems.
Production and repair of drill rods, threaded couplings and related components used for geological exploration and mining operations.
CNC turning and thread production for larger tubular fittings, connectors and cylindrical components that require controlled thread geometry.
Re-facing, boring and re-threading worn pipe ends and threaded components according to the dimensions and repair process required by the customer.
| Selection Factor | CNC Pipe Threading Lathe | Standard CNC Lathe |
|---|---|---|
| Main Workpiece | Pipe, tube, drill rod, coupling | Shafts and general turned parts |
| Spindle Bore | Large pipe-through bore | Usually smaller |
| Workholding | Front/rear pipe clamping | Conventional chuck configuration |
| Threading Focus | Pipe and taper-thread applications | General thread turning |
| Long Pipe Machining | Designed around tubular workpieces | Depends heavily on spindle bore and support |
If your workpieces are mainly shafts, discs or conventional turned components rather than pipe, compare our CNC Lathe Machines before selecting a dedicated pipe threading model.
Pipe threading projects vary significantly in pipe diameter, thread profile, material, production quantity and local electrical requirements. GSK supports OEM and ODM machine configurations so the final specification can be matched to the actual project.
Sending only a request such as "I need a QK1327" is not always enough to confirm the right machine. For faster technical selection, provide the following information:
Pipe outside diameter: minimum and maximum OD.
Pipe inside diameter: especially important for bore and internal threading.
Workpiece length: including the longest raw pipe.
Material: carbon steel, alloy steel, stainless steel or other material.
Thread type: metric, inch, taper or specified connection drawing.
Thread length: maximum machining length at each pipe end.
Production volume: repair, small batch or continuous production.
Other operations: facing, boring, OD turning, grooving or additional machining.
Preferred CNC system: if required by your plant.
Destination country and voltage: for electrical and export configuration.
GSK is not only a trading supplier. Shandong GSK CNC Equipment Co., Ltd. has more than 30 years of CNC machine-tool design and manufacturing experience and supplies machining centers, CNC lathes and other metalworking equipment to international markets.
GSK states that its machines pass more than 24 QC testing processes. For an export pipe-threading project, inspection should cover machine operation and configuration against the agreed order before shipment.
GSK also provides ISO, CE, SGS, TUV, BV, EAC and other certification documentation according to available product and market requirements.
Learn more about GSK CNC manufacturing capability.
A pipe threading CNC lathe is designed around tubular workpieces. It normally uses a much larger spindle through-hole and pipe-supporting chuck arrangement so long pipes can pass through and remain supported during thread machining.
Start with the maximum pipe OD and required threading range, then check spindle bore, pipe length, machine load and chuck configuration. For example, GSK's published QK-series data covers pipe-threading ranges from 30–126 mm on QK1313 up through larger QK-series configurations.
Yes. The QK series is designed for both internal and external pipe-thread machining. Actual thread profile and dimensional range should be confirmed from the drawing before machine selection.
Yes. GSK's QK-series product information includes taper-thread machining capability in addition to metric, inch and other thread formats.
Double workholding is particularly useful for long tubular components because it provides additional support around the spindle area and helps control pipe movement during machining.
GSK supports OEM and ODM. Controller, chuck, turret, tailstock, guarding and other options can be evaluated according to the selected QK model and project requirements.
Send the workpiece drawing, pipe OD and ID, total length, material, thread profile, thread length, required machining operations, production volume, destination country and preferred CNC controller.
GSK states an 18-month warranty for its machine-tool products. Confirm the applicable warranty scope and service terms in the final commercial quotation.
Not sure whether you need QK1319, QK1325, QK1338 or a larger heavy-duty model? Send us the workpiece drawing instead of guessing from a catalogue. GSK can recommend the machine according to pipe diameter, thread range, material, length and production quantity.
For faster selection, include: pipe OD + pipe length + material + thread drawing + production volume.
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