Product; dished end/pressure head Material: A516,A36, etc Shape: eliptical, oval, torispherical, flat base Test: 100% UT Product: dished end/pressure headShapes : elliptic shape, dishing shape, conical shape, flat roof shape, spherical arched shape and boiler profiled shape. Material quality : stainless steel, pressure vessel steel, MA516-70, etc.Manufacture standard: American standard , European ...