Questions about heat treatment
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Under what operating conditions do pipeline welds require heat treatment? Please help answer this question. Thank you!
Outdoor environments use lower-grade, high-carbon steels.
Low-alloy steels generally require heat treatment
Whether hot treatment is required for the pipe fittings depends on the material of the pipe and its wall thickness; it is possible to refer to the welding specifications to find out the specific range for wall thickness
Whether pipeline welds require heat treatment should be determined according to the design documents. Especially for alloy steel pipes, without design documents, it is necessary to refer to standards to create welding samples in order to ensure quality.