What Is a Dished End (Bombe)?

A dished end (bombe) is the general name given to the component used to close the bottom and top of cylindrical metal vessels—pressurized or non-pressurized, thin- or thick-walled—used in industries such as LPG, LNG, fuel, food, autoclaves, and reactors.

Using a dished end allows radial surfaces to withstand (distribute) pressure more effectively and prevents the weld seam from coinciding with the critical cross-section.

Dished End Type	Diameter (mm)	Height (mm)	Thickness (mm)	Volume (L)
Flat Dished End	48	25	4	0.04
Flat Dished End	60	30	4	0.07
Flat Dished End	76	35	4	0.13
Flat Dished End	89	35	3-4	0.18
Flat Dished End	114	55	2-3-4	0.35
Flat Dished End	140	65	3-4	0.75
Flat Dished End	165	68	2-3-4-5	1.05
Flat / Beaded Dished End	168	68	3-4	1.1
Flat / Beaded Dished End	219	70	2-3-4-5	2.2
Flat / Beaded Dished End	250	75	2-3-4-5	2.8
Flat / Beaded Dished End	273	88	2-3-4-5	3.7
Flat / Beaded Dished End	300	90	2-3-4-5	4.9
Flat / Beaded Dished End	323	120	2-3-4-5	7.4
Flat / Beaded Dished End	350	115	3-4-5	8.3
Flat / Beaded Dished End	380	120	2-3-4-5	9.85
Flat / Beaded Dished End	400	115	3-4-5	10.4
Flat / Beaded Dished End	406	125	4-5-6	13
Flat / Beaded Dished End	450	130	2-3-4-5	12.6
Flat / Beaded Dished End	480	125	3-4-5	14.4
Flat / Beaded Dished End	500	120	2-3-4-5	16.9
Flat / Beaded Dished End	545	150	3-4-5	20
Flat / Beaded Dished End	600	135	3-4-5-6	26.7
Flat / Beaded Dished End	640	166	3-4-5-6	32
Flat / Beaded Dished End	750	190	4-5	75
Flat / Beaded Dished End	800	205	4-5-6	80
Flat / Beaded Dished End	800	350	2-3	150
Flat / Beaded Dished End	850	200	4-5-6	72