Spiral Weld Pipe (Casing)

PipeA long tube of clay, concrete, steel, metal, wood, etc., for conveying water, gas, oil or other materials. made from coils of steel plate by wrapping around a mandrail in such a manner that the welds are a spiral helix.

Split Design

A boring machine having the capability of being broken down into two or more elements to reduce the lifting weight.

Spoil Chamber

See Casing PusherThe front section of a boring machine that distributes the thrusting force of the hydraulic cylinders to the casing and forms the outside of the spoil ejector system..

Spoil Ejector

A set of paddles, rotating in close proximity to the inside of the casing pusher.

Spoil Ejector Door

A door that partially or completely closes the spoil opening when at rest.