180 Return, Short Radius, Standard Weight
NPS	OD	ID	w.t.	Center to Center, in. (O)	Pipe Schedule	Approximate Weight, lb.
2	2.375	2.067	0.154	4	40	1.98
2.5	2.875	2.469	0.203	5	40	3.92
3	3.5	3.068	0.216	6	40	6.13
3.5	4	3.548	0.226	7	40	8.6
4	4.5	4.026	0.237	8	40	11.6
6	6.625	6.065	0.28	12	40	30.7
8	8.625	7.981	0.322	16	40	61.6
10	10.75	10.02	0.365	20	40	109
12	12.75	12	0.375	24	ST	160
14	14	13.25	0.375	28	30	205
16	16	15.25	0.375	32	30	270
18	18	17.25	0.375	36	ST	342
20	20	19.25	0.375	40	20	424
24	24	23.25	0.375	48	20	612
30	30	29.25	0.375	60	ST	960
36	36	35.25	0.375	72	ST	1387