Abstract: A pipeline pig including a generally cylindrically shaped body formed of an elastic material, the body having a diameter larger than the internal diameter of a pipeline into which the pig is to be thrusted, and a conical portion provided at the forward end of the body, the pig comprising a plurality of spaced pin shaped metal members provided on the peripheral surface of the body, each of the pins including a heat portion protruding outwardly from the body, a shaft portion radially embedded in the body and an anchoring portion provided at the inner end of the pin, and the pins being made of a material not as hard as that of the pipeline and somewhat harder than that of the substance to be removed or scraped by the pig from the pipeline.