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ISO 7641-1:1983
M00000022
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ISO 7641-1:1983 Road vehicles - Caravans and light trailers - Calculation of the mechanical strength of the drawbar - Part 1: Steel drawbars
standard by International Organization for Standardization, 10/01/1983
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Gives a simplified procedure for the calculation of the mechanical strength of drawbars where the vertical static load on the coupling head does not exceed the limits specified in ISO/TR 4114. Applies only to steel drawbars of welded and other than welded construction. The welding procedure requirements given by the manufacturer shall be met.