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Part No: 342100003

Double-Jack Screw Chain Clamp, a robust and versatile tool designed to meet the demands of heavy-duty pipe and vessel joining applications. This precision-engineered clamp is specifically tailored for use in the range of 10 inches to 36 inches, providing a reliable and secure solution for a variety of industrial projects.

Key Features:

  1. Size Flexibility: The Double-Jack Screw Chain Clamp is adjustable to accommodate pipe and vessel diameters ranging from 10 inches to 36 inches, offering exceptional versatility for a wide range of applications. 

  2. Dual Jack Screw Mechanism: The innovative dual jack screw mechanism ensures a uniform and secure grip around the circumference of the pipe or vessel, providing enhanced stability and preventing slippage during operation.

  3. Heavy-Duty Construction: Crafted from high-strength materials, this clamp is built to withstand rigorous industrial environments. The durable construction ensures longevity and reliability, making it suitable for demanding applications.

  4. Precision Engineering: The clamp is engineered with precision, allowing for easy and efficient installation. The double-jack screw design facilitates quick adjustment and tightening, reducing downtime and increasing overall productivity.

  5. Chain Link Design: The chain link structure provides additional strength and stability. The chain evenly distributes pressure along the clamp, minimizing stress concentration points and ensuring a secure and even hold on the pipe or vessel.

  6. Corrosion Resistance: The clamp is coated with a corrosion-resistant finish, offering protection against environmental elements and extending the service life of the product.

  7. User-Friendly Operation: The clamp is designed with the end user in mind, featuring user-friendly controls and mechanisms. The intuitive design allows for quick and straightforward installation and removal.

  8. Versatile Applications: Ideal for a variety of industrial applications, including pipe fabrication, shipbuilding, petrochemical plants, and more. The clamp's adaptability makes it an indispensable tool for professionals in the field.


  • One Chain Clamp covers the range of 8 cage clamps
  • Pipe and fittings can be fully welded with clamp in place
  • Jackscrew contact points swivel to protect against marring the pipe
  • Optional Spacing Screws available to assist in setting weld gap
  • An add-on Jackbar can be added when additional reforming pressure is need.

Double Jackscrew Chain Clamp Includes:

  • Nickel plated carbon steel or stainless steel duplex roller chain
  • Stainless steel Double Jackscrew Jackbars - quantity as indicated in specifications
  • Stainless steel Main Block
  • Level and Support Device
  • Jackscrew Wrench
  • Heavy-duty Storage Box


  • Torque wrench
  • Carbon or stainless steel spacing screws (optional)
  • Additional jackbar


  • NOMINAL RANGE: 10-36″ (254-914)
  • EST. SHIPPING WT: 144 lbs. / 67 kg

*Calculations are based on pipe with a tensile strength of 45,000 lbs per square inch / 3,164 kg per square centimeter

Invest in the reliability and durability of the Double-Jack Screw Chain Clamp 10"-36" for your industrial projects. Backed by quality craftsmanship and engineering excellence, this clamp is a dependable solution for ensuring a secure and stable connection in your piping and vessel applications.

Request a quote or more information.