... head, boiler cover Material: Q235, A36, A516 Shape: eliptical shape, oval shaple, flat base Product name: dish end or pressure vessel ... headShapes of the head: spherical head, concial head, elliptical head, flat base head, dished head, etc. Raw material : Q235,a515 ... 8851567 skype: ms.helen_xiyida A516 /A36/Q235 dished end /pressure vessel head from Ms Helen