DIN 28013:2012-06

This standard applies for dimensions and design of one-piece ellipsoidal heads with or without welded seam made from low alloyed or stainless steels which are mostly used at process apparatus. It applies for an outside diameter range up to 8000 mm. For heads with larger outside diameters or made from other materials the scope of this standard applies analogously, whereupon the tolerances - especially of heads consisting of segments - or rather other materials have to be separately agreed.