Carbon steel elbow forming process regulations: A comprehensive analysis of the entire process from raw materials to finished products Carbon steel elbows are one of the most common pipe fittings in pipeline systems and are widely used in various fields such as petroleum, chemical engineering, natural gas, power, metallurgy, and construction. The quality of elbows directly affects the safe operation and service life of pipeline systems. The push forming method is one of the mainstream processes for manufacturing carbon steel elbows at present. It uses medium-frequency induction heating to heat the pipe blank locally to a thermoplastic state, and then expands and forms it on the core mold through a push forming machine. It has significant advantages such as high production efficiency, high material utilization rate, and uniform wall thickness. This article will systematically elaborate on the complete process regulations of the push forming process for carbon steel elbows, covering all aspects such as raw material inspection, blanking, heating, push forming, shaping, heat treatment, and inspection and testing, providing comprehensive technical references for relevant practitioners. Chapter One: Overview 1.1 The Process Principle of Pushing and Forming Elbows The push forming process for carbon steel elbows is a type of hot expansion forming method.