Casing Insulators / Spacers

Pipelines are crossing or running parallel to highways and railways shall be protected by casing. Casing insulators are used in order to separate the carrier pipeline from the casing. SNI casing Insulators isolate water, sewer and gas pipelines from casing simply and effectively. Casing Insulator are made of Injection moulded High density Polyethylene.

Types of casing insulator:

  • Bolt type casing insulator
  • Without Bolt, Interlocking type casing insulator.

Pipeline Casing Insulator are used to support the carrier pipe and electrically isolate the carrier pipe from the casing pipe at the cased crossing.

  • High electrical insulating value and low water absorption and due to this preventing leakage and maintaining electrical isolation between carrier and casing pipe.
  • High compressive strength to support the carrier pipe weight.
  • Does not soften or cold flow at design temperatures.
  • Resist mechanical damage while being pulled into casing
  • Resist Mechanical and thermal shocks and stresses ,particularly that occur during installation and inserting/pulling operations
  • Inner surface prevents slippages and guards against the coating.
  • Tightly fastened to carrier pipe and guarantee easy insertion into the casing pipe, preventing damage to carrier pipe coating.
  • Molded from virgin polyethylene material.
  • Easy installation.
  • New design with flexible elements suitable for all the requirement.
  • Easy installation. Insulator Elements can be tightened onto the carrier pipe by a simple hammer without needing any special tools;
  • Perfect load distribution around each insulator
  • Casing insulator’s elements have been studied with different main characteristics and different manufacturing technologies according to the different answers requested by each application.
  • The shape of all our elements has been studied in order to grant the maximum number of contact points of insulator and casing internal surface.
ASTM D 149,D 695, D 638,D 651,D256, D570
  • Supply : As per carrier pipe diameter
  • Skid height : 15mm,25mm,41mm,60mm,75mm,90mm
For proper installation and performance please refer our installation instruction