
Product Overview

This series of welding chucks are special clamping accessories matched for welding positioner turntable, not for lathe machine. 3‑jaw self‑centering type and 4‑jaw independent type are available.
Made of high‑strength steel, it provides stable clamping for pipes, flanges and cylindrical workpieces during circumferential welding.
It keeps good concentricity while rotating together with positioner, effectively prevents workpiece slipping in long‑time welding work.
Technical Data
| Item | Specification |
|---|---|
| Type | 3‑jaw self‑centering / 4‑jaw independent welding chuck |
| Material | High strength cast steel, hardened jaws |
| Operation | Manual wrench clamping |
| Clamping mode | Inner clamping & outer clamping |
| Common size | 200mm / 300mm / 400mm / 500mm / 600mm customizable |
| Matching device | Welding positioner / welding turntable |
| Application | Pipe, flange, cylinder, irregular workpiece welding |


Main Features

‑ 3‑Jaw Self‑Centering Welding Chuck:
Three jaws move synchronously, fast self‑centering. Ideal for round pipe, tube and regular circular workpieces. Quick setup for batch welding jobs.

‑ 4‑Jaw Independent Welding Chuck:
Every jaw adjusts separately. Suitable for square, eccentric and irregular shaped workpieces. Strong clamping force for heavy welding pieces.

‑ Heavy‑duty cast steel body:
hardened jaw surface, wear‑resistant for continuous welding production.

‑ Support inner clamping and outer clamping:
wide clamping diameter range. Easy to install on welding positioner turntable.
Applications
‑ Pipe and tube circumferential welding
‑ Flange and valve body welding assembly
‑ Circular pressure vessel parts welding
‑ Square and eccentric special‑shaped workpiece clamping
‑ Welding fixture for positioner in metal fabrication workshop


Quality Control
‑ Raw material hardness inspection for steel body and jaws
‑ Jaw surface quenching and precision machining
‑ Full clamping test before delivery
‑ Concentricity detection after assembly
‑ Anti‑rust treatment for storage and shipment
Customization Service
‑ Multiple chuck outer diameter and clamping range customization
‑ Custom transition plate to fit your existing welding positioner
‑ Modified jaws for special workpiece shapes
‑ OEM marking on chuck body is acceptable
‑ Custom packing requirement supported

Product packaging



Company Certification

Frequently Asked Questions
Q: What is the difference between welding chuck and lathe chuck?
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A: Welding chuck is specially designed for welding positioner, anti‑spatter structure, focus on stable clamping during rotating welding, not for cutting machining.
Q: Which one shall I choose, 3‑jaw or 4‑jaw?
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A: Choose 3‑jaw for regular round pipe/tube; choose 4‑jaw for square, eccentric or irregular workpieces.
Q: Can this chuck fit my existing welding positioner?
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A: We can produce custom transition plate according to your turntable mounting hole size.
Q: Can jaws be replaced when worn out?
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A: Yes, spare jaws are available for after‑sales replacement.
Q: What is the warranty term?
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A: 12‑month warranty against manufacturing defects.
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