SGK -400 Full-Auto pipe Belling-machine Expander with drawing device and program interface concerend is used with extruding machine ,It is also used solitarily .while expanding pipes,the machine adopts translation.The action is steady and correct ,It does not damage pope materi8als ,The machine adopts double-infraed heating oven type ,Each oven is equipped with heating core .The shaping method adopts expanding-end shaping.The size of pipe mouth is correct.On its panel,there is a transfer swith of expanding solvet type socket (Staright port)and expanding seal loop type pipe socket (R port).The choice of expanding pipetypes is very convenient.The technological adaptability is strong ,Its main electric control elements are all exported. The system characteristics are steady and reliable.