Abstract: Described here in the article is a thermal simulation test method, involving taking samples from the mother tube of the bend, and then getting the specimen roughly machined, and subjected to quench + temper treatment, focused on the preparing activities for the quenching process and the tempering process as related to the said thermal simulation test method. The mechanical properties of the as-welded, the as-thermal simulated and as-bended weld pipes are comparatively analyzed. As a result it is regarded that both the physiochemical property change tread and data as obtained from the above mentioned thermal simulation test method for the mother tube are generally in compliance with those as got from the thermal simulation test method for the hot bending bend.The above mentioned can be used, under limited conditions, to verify whether the bend is up to applicable technical requirements or not.