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AS/NZS 4968.3:2023 Heavy road vehicles - Mechanical coupling between articulated vehicle combinations Kingpins and associated equipment
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AS/NZS 4968.3:2023 specifies requirements for 50 mm, 75 mm and 90 mm kingpins for use in articulated vehicles, B-doubles and road trains in normal use on both sealed and unsealed roads, and requirements for mechanical properties, dimensional standards for interchangeability and dynamic testing