Endformed Driven Slip-on Coupler

The Next Generation Of Driven Pipe Piling Connection Solutions

Endformed Connection System John Lawrie Tubulars
Endformed Driven Slip-on Coupler

Flexibility in the field, when you need to go deeper.

John Lawrie Tubulars has developed a unique, patent-pending slip-on coupler for extending driven pipe piles for deep foundations. Using the Endformed Connection System ™, the coupler is factory fabricated for your project pipe size and delivered to your project site ready to use. This coupler is perfect for projects where you are using standard pipe piles and need an extension. The Endformed Slip-on Coupler provides solid alignment, provides greater lateral resistance than other couplers available on the market, and can provide some tension resistance as well.

At a glance

  • Available in pipe diameters from 7” to 16” up to 0.500” wall thickness

  • Welding by AWS D1.1 certified welders

  • Custom fabricated to your project specifications

  • Patent Pending in USA, Canada and UK

The Benefits of the Endformed Driven Slip-on Coupler

  • For use with standard driven pipe piling
  • Efficiency in the field – self-aligning connection, piling rig is not tied up holding extension while field welding
  • Excellent lateral and moment rigidity
  • No field welding time
  • No beveling of pipe ends as needed for butt welds
  • Some tension resistance is provided without welding
  • Safer worksite – no welding, no excess hanging time, self-guiding assembly

  • Multiple wall thicknesses can be endformed to offer design flexibility

John Lawrie Tubulars Endformed Driven Pipe Pile Slip-on Coupler Sizes

Pipe Grades
Diameter (inches) Wall Thickness Range (inches) J55 L80
7.000 0.231 – 0.498 Y Y
7.625 0.300 – 0.500 Y Y
8.625 0.264 – 0.500 Y Y
9.625 0.312 – 0.472 Y Y
10.750 0.279 – 0.495 Y Y
11.750 0.330 – 0.489 Y Y
12.750 0.250 – 0.500 Y Y
13.375 0.330 – 0.514 Y Y
14.000 0.250 – 0.500 Y Y
16.000 0.375 – 0.495 Y Y
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