mindlissmetalfab
+1y
Just looked in my steel supply bookStandard Black Prime PipeNominal 1": 1.315 OD, 1.049 ID, 0.133 Wall Extra Heavy Black Prime PipeNominal 1": 1.315 OD, 0.957 ID. 0.179 Wall Do you have a caliper? Tube should give you 'actual' numbers (1.000, 1.25 etc) , pipe is gonna give you oddball sizes like above.