Carbon steel eccentric head, small-caliber eccentric head carbon steel, carbon steel large diameter pipeline eccentric head Cangzhou Aerospace Ltd., 15720445863 0317-8255511 QQ2873125548www.guanjianjidi.com enlarged diameter head size smaller than the size of the head shape is the use of large end diameter tube, with the inner diameter of the die along the tube flaring shape. Expanding process mainly to solve the larger the size of the head easily adjustable through the reduced diameter forming the case, sometimes forming materials and products according to needs of the expanding and necking method combined. Expanding the reduced diameter or deformation of the pressing process, according to the different materials and reducers, determine the use of cold or hot. Typically, as by cold pressing, but many adjustable and cause severe case hardening, case wall partial thickness of material or alloy should be used hot. b. stamping addition to using steel as raw size of the head, but on some of the specifications of the size of the head can also be used with a steel plate stamping process for production. Drawing dies are used with reference to the size of the shape of the inner surface of the first dimension design, die cutting steel plate after the stamping stretch forming.