METHOD FOR PERFORMING MATERIAL TESTS FOR PIPES MADE OF STEEL, WHICH PIPES ARE TO BE TREATED WITH HEAT THAT INFLUENCES THE MECHANICAL PROPERTIES

摘要

The invention relates to a method for performing material tests for pipes made of steel, which pipes are to be treated with heat that influences the mechanical properties, wherein in a first process step a seamless or welded pipe is produced, which, after the production, is fed to a heat treatment installation for influencing the mechanical properties in a second process step and from which a specimen for determining the mechanical properties is taken in a subsequent third process step. The third process step being omitted, a specimen is taken from the pipe already after the first process step of the production of the pipe and initially only said specimen is fed to a heat treatment corresponding to the pipe to be treated, and subsequently the mechanical properties are determined and compared with the required properties. Then the pipe from which the specimen was taken is released or blocked for the machining of the pipe ends and for the subsequent second process step of the heat treatment.