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HD PUF CRYOGENIC PIPE SHOE BG600-603

(High Density Polyurethane Foam)

All Binder HD PUF cradles are manufactured from “NON-CFC” polyurethanes which are classified as self-extinguishing with a 90% retention of weight when tested in accordance with BS4735 and ASTM D-3014, respectively.

Material Specification
Surface Finish Steelwork ASTM A123 HDG
Nuts & Bolts ASTM A153 HDG
Washers & Disc Springs Plain

 

BG600

  1. The BG600 standard HD PUF Shoe is fitted with Disc Spring Washers on each bolt which ensures that the cradle is adequately clamped even after shrinkage has occurred due to the cryogenic operating temperature of the supported pipe.
  2. The clamping force is calculated so that the cradle will not rotate or slip axially on the pipe as the base experiences frictional resistance when the shoe is free to slide (un-guided) on the support structure.
  3. The frictional resistance is a result of the Vertical Design Load of the pipe and the shoe's Self Weight.
  4. A PTFE Slide Plate is recommended for larger diameter supports to reduce the sliding resistance and hence the clamping force required to prevent rotation.
  5. This design is applicable to 100NB pipe and greater sizes. For pipe size 80NB and lesser please see Page 166

BG601

  1. The BG601 HD PUF Shoe is similar to the BG600 except it has an extra base attached to the top cradle to prevent the pipe lifting up during operation.
  2. For small up-lift forces, the BG600 can be used instead with hold-downs acting at the shoe base; however, this may result in higher clamping forces to prevent rotational slippage and will require calculations to be conducted as needed.

BG602

  1. The BG602 HD PUF Shoe is similar to the BG600 except it has guide bases attached to each side to resist large lateral forces.
  2. The effect of the guide bases mounted at the pipe centre line level is such that the shoe can manage large lateral loading without the need for high clamping forces to resist slippage.
  3. For small lateral forces, the BG600 can be used instead with guides acting at the shoe base; however, this will result in higher clamping forces to prevent rotational slippage and will require calculations to be conducted as needed.

BG603

  1. The BG603 HD PUF Shoe has both the upper base of the BG601 and the guide bases of the BG602 to resist large up-lift and lateral forces.
  2. As with the BG602, effect of the guide bases mounted at the pipe centre line level is such that the shoe can manage large lateral loading without the need for high clamping forces to resist slipping.
  3. For small lateral and up-lift forces, the BG600 can be used with hold-down guides acting at the shoe base; however, this will result in higher clamping forces to prevent rotational slippage and will require calculations to be conducted as needed.

General Notes

  • Total Insulation thickness is determined by the required operating temperature. Please refer to the insulation thickness v operating temperature table.
  • Disc springs and bolting arrangements are calculated using design loads to prevent axialand rotational slippage. Bolting torques for installation are provided.
  • Please provide vertical and lateral design loads if they exceed the design loads shown indesign data table.
  • Insulation is available in the following colour coded densities of 160, 240 and 320kg/m3dependant on load requirements.
  • Please contact Binder Group for pipe shoes requiring lateral, vertical or axial restraint.
  • Standard batch traceability, complete with type 2.2 material certificates
  • Pipe Shoes are welded to AWS D1.1 pre-qualified procedures
  • BG550 type Teflon slide plates recommended for supports size 24” (600NB) and above. These are best ordered with the shoe.
  • Alternative corrosion protection finishes available on request.
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