YXJZ has a variety serise of productions as ellipsoidal heads,flat heads,cone heads,spherical heads,spherical cap-shapedheads, U-rings,expansion joint,diameter from 42mm to 12,000mm,covers all kindsof carbon steels,alloy steels,stainless steels.YXJZ takes lead in eccentriccone head,Bow-shaped bottom head,panes spherical head,titanium alloy steelhead,forming technology of large thin-walled stainless steel panes and specialalloy steels.