Length	Round Head Plug
Min
DN	Pipe Size	A	Nominal Head (Nom) E	Length (Min.) D
6	1/8″	10	10	35
8	1/4″	11	14	41
10	3/8″	13	18	41
15	1/2″	14	21	44
20	3/4″	16	27	44
25	1″	19	33	51
32	1-1/4″	21	43	51
40	1-1/2″	21	48	51
50	2″	22	50	64
65	2-1/2″	27	73	70
80	3″	28	89	70
100	4″	32	114	76