StandardNPS

ASME B36.10M, welded and seamless wrought steel pipe, 2004 edition. NPS 6.
Schedule	DN	OD in	Wall in	ID in	Plain-end lb/ft	Check
no schedule	150	6.625	0.083	6.459	5.80	checked
Sch 5	150	6.625	0.109	6.407	7.59	checked
no schedule	150	6.625	0.125	6.375	8.69	checked
Sch 10	150	6.625	0.134	6.357	9.30	checked
no schedule	150	6.625	0.141	6.343	9.77	checked
no schedule	150	6.625	0.156	6.313	10.79	checked
no schedule	150	6.625	0.172	6.281	11.87	checked
no schedule	150	6.625	0.188	6.249	12.94	checked
no schedule	150	6.625	0.203	6.219	13.94	checked
no schedule	150	6.625	0.219	6.187	15.00	checked
no schedule	150	6.625	0.250	6.125	17.04	checked
Sch 40 / STD	150	6.625	0.280	6.065	18.99	checked
no schedule	150	6.625	0.312	6.001	21.06	checked
no schedule	150	6.625	0.344	5.937	23.10	check source
no schedule	150	6.625	0.375	5.875	25.05	formula only
Sch 80 / XS	150	6.625	0.432	5.761	28.60	checked
no schedule	150	6.625	0.500	5.625	32.74	checked
Sch 120	150	6.625	0.562	5.501	36.43	checked
no schedule	150	6.625	0.625	5.375	40.09	formula only
Sch 160	150	6.625	0.719	5.187	45.39	checked
no schedule	150	6.625	0.750	5.125	47.10	check source
XXS	150	6.625	0.864	4.897	53.21	checked
no schedule	150	6.625	0.875	4.875	53.78	formula only

no schedule, wall 0.083 in

Pipe values follow the 2004 editions of B36.10M and B36.19M and flange values and pressure-temperature ratings the 2025 editions of B16.5 and B16.47, fitting values the 2012 edition of B16.9, metallic gaskets the 2012 edition of B16.20 and non-metallic gaskets the 2011 edition of B16.21. Each row is checked by script: pipe against the plain-end weight formula and independent sources, flanges and fittings against the standard’s own SI and U.S. tables. Rows marked “formula only”, “check source” or [UNVERIFIED] have not been fully cross-checked. Mass in kg/m is calculated, not read from the standard. Confirm against the current edition of the standard before use in design or procurement.