Steel Roller Rings

Often it is not possible to lay pipes in open ditches. For example, for rail or road crossings it is first necessary to drive casings underground. By using PSI steel insulators or roller rings, the carrier pipe can be inserted into the casing sleeve safely and efficiently.

Steel roller rings or steel insulator

• facilitate pipe Installation by reducing friction between the carrier pipe and the casing
• provide support for the carrier pipe
• act as spacers between pipe and casing pipes can thus be placed in concentric or eccentric positions
• ensure electrical isolation of both pipes, since the skid material can be made out of plastic.

Steel insulators or steel roller rings

Strong steel constructions are preferred over plastic insulators in the following cases:

 • High medium temperatures
 • High pressure in large pipe diameters (load-bearing capacity!)
 • Wide or narrow difference in diameter between casing and 
    carrier pipe
 • Long distances
 • Rough casing pipe surfaces

Typical steel insulator assembly

Each ring consists of two semi-circular halves which are clamped together by hexagonal bolts and nuts. The ring halves are manufactured individually.

Note

Performance data and technical information provided herein is intended for guide line purposes only. Suitability of product configurations for specific applications should be determined by the user.

Individual Steel Solutions

Large pipe-in-pipe projects like street, river or rail track crossings demand for higher material properties which exceed the ones plastic casing spacers can offer.

Examples:

- Multiple pipes in exact defined position

- Long distances

- Permanent pipe-movement

- High temperature

- Heavy weight

- Integrated tensile

- Hanging construction

PSI also offers customized solutions made of steel. Use our experience!