IMPROVEMENTS IN TUBULAR BODIES AND METHODS OF FORMING SAME

摘要

IMPROVEMENTS IN TUBULAR BODIES AND METHODS OF FORMING SAME 5 A TUBULAR BODY 10 COMPRISES AN INNER HOLLOW CORE 12 AND AN OUTER CASING 14 OF ONE OR MORE STRIPS OF SELF MECHANICALLY INTER-ENGAGING HELICALLY WOUND MATERIAL HAVING A HIGHER YIELD STRENGTH THAN THAT OF THE CORE MATERIAL. ALSO PROVIDED IS A METHOD OF FORMING THE TUBULAR BODY 10 COMPRISING THE STEPS OF WINDING THE OUTER 10 CORE 14 ONTO THE INNER CORE 12 AND AN END CONNECTOR 32 FOR USE WITH SAID TUBULAR BODY 10 WHEN SAID BODY 10 IS PROVIDED WITH HELICALLY EXTENDING DETENTS 30A ON AN OUTER SURFACE THEREOF. 15