HEBEI PENGXIN PIPELINE EQUIPMENT GROUP CO.,LTD
Pipe Fitting/Elbow/Flange/Tee/Reducer/cap
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Steel Pipe Cross 219.1*12.7——88.9*7.62 There are two kinds of hydraulic expansion and thermal pressure forming.
Welding of four-way hydraulic expansion is a forming process through the axial compensation of metal material. The process is using a special hydraulic machine, Fill the liquid into a pipe blank equal to a quadruple diameter, Through the two horizontal side cylinders of the hydraulic machine, Small volume after extrusion, The liquid in the billet increases in pressure with its smaller volume, When the pressure required for expansion is reached, Metal material flows through the mold cavity under the liquid pressure of the side cylinder and pipe blank. Four-way hydraulic expansion process can be formed once, High production efficiency; The quadruple head and shoulder wall thickness have increased due to the seamless hydraulic expansion process, It is mainly used for the manufacture of standard wall thickness less than DN400. Its suitable forming materials are relatively low low carbon steel, low alloy steel, low stainless steel, including some non-ferrous metal materials, such as copper, aluminum, titanium, etc.
