Dimensions of butt welding pipe returns ASME B16.9 B16.28

Dimensions of butt welding pipe returns ASME B16.9 B16.28

NPS	OD, D	Long Radius		Short Radius
		Center-to-Center, O	Back-to-Face, K	Center-to-Center, O	Back-to-Face, K
1/2	21.3	76	48	–	–
3/4	26.7	76	51	–	–
1	33.4	76	56	51	41
1 1/4	42.2	95	70	64	52
1 1/2	48.3	114	83	76	62
2	60.3	152	106	102	81
2 1/2	73	190	132	127	100
3	88.9	229	159	152	121
3 1/2	101.6	267	184	178	140
4	114.3	305	210	203	159
5	141.3	381	262	254	197
6	168.3	457	313	305	237
8	219.1	610	414	406	313
10	273	762	518	508	391
12	323.8	914	619	610	467
14	355.6	1067	711	711	533
16	406.4	1219	813	813	610
18	457	1372	914	914	686
20	508	1524	1016	1016	762
22	559	1676	1118	1118	838
24	610	1829	1219	1219	914

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