... , straight shank twist hot upsetting, hot. 16mm diameter, round steel, heat about 3-5 seconds, can be extruded. ... and shape, such as embossing. If the tensile steel, pipe, smashed head, wire, heating wire nail, stainless steel ... shape presses flower etc. , for example the steel pipe pulls to stretch. bend the tube and hit head ... welds etc. 18KVA High frequency induction thermal forming machine KX-5188A18