elliptical head 1.Standard:ISO9001-2008/GB/T125198-2010 2.Material:mild steel 3.we can produce it according to your drawing pressure vessel elliptical head1.Material:mild steel,low alloy steel,carbon steel,stainless steel,clad plate,etc2 .processing scope: Di:300-12000mm Do:300-12000mm Thickness:3-150mm SF:0-100mm Beveing:acc to your drawing3. Forged head processing method: Hot mould pressing/ ...