Construction Trailers Trans-KTP HARDOX 22 and 27 Tons Joskin markets a construction trailer meeting the requirements of all professionals. The body of the new generation of Joskin Trans-KTP tipping trailers is a real breakthrough: it is completely made of HARDOX steel with a very high elastic limit. The Joskin Trans-KTP tipping trailer is lighter but stronger than ever and its performance is unmatched in harsh working conditions.