to the pipe 10 an outward and an inward direction of the axis c is defined respectively out of and into the pipe 10 it should be noted that the directional terms appearing throughout the specification and claims are for illustrative purposes only and are not intended to limit the scope of the appended claims the terms u201c up u201d u201c above u201d u201c upper u201d u201c out u201d and derivatives thereof define similar directions and the terms u201c down u201d u201c below u201d u201c lower u201d u201c in u201d and derivatives thereof define similar directions attention is drawn to fig2 and 3 the connector 16 has a central core 18 that extends a thickness or height h along axis c and a peripheral wing 20 that is located thereabout in one embodiment the central core 18 and the peripheral wing 20 are integrally formed of the same material and have unitary one piece construction the central core 18 has an upper portion 18 a which is exposed to the outer surface of the pipe 10 and a lower portion 18 b which is exposed to the inner surface of the pipe 10 in one embodiment the wing 20 extends radially outwardly relative to the core.