An inner pipe centraliser assembly (100) for a double wall pipe, the inner pipe centraliser assembly comprising a plurality of spring forms (110), wherein each spring form of the plurality of spring forms comprises one or more inner slide bearings (112) and one or more outer slide bearings (111). Each spring form (110) is thus configured to be biased against an outer surface of the inner pipe and is additionally configured to be biased against an inner surface of an outer pipe of the double wall pipe.
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