SA516 GR70 or Q235 or A36 pressure vessel/dish end SA516-70 pressure vessel, dishing , conical shape, flat roof ... SA516-70, normal carbon steel, stainless steel pressure vessel and dish head Here are the different shapes: elliptic shape, dishing shape, conical ... , spherical arched shape and boiler profiled shape, shell, un-standard dish head and so on.The vessel heads (stainless steel, pressure vessel ...