DIN 17178 : 1986被替代
WELDED CIRCULAR FINE GRAIN STEEL TUBES SUBJECT TO SPECIAL REQUIREMENTS - TECHNICAL DELIVERY CONDITIONS
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
Applies to welded circular tubes subject to special requirements and made from the fine grain structural steels listed in Table 1. These tubes are intended to be used on the basis of a 100% utilization of the permissible design stress in the weld. They are predominantly used in the construction of pressure vessels, chemical plant, pipework and for general mechanical engineering purposes. They are designed for operating temperatures not exceeding 400degreeC and, in the as delivered condition (see sub-clause 5.2) normally exhibit a minimum yield strength of between 255 and 460 N/mm2, as given for the lowest wall thickness range in Table 3.
