Tubos Schedule (SCH) são de formato redondo e possuem maiores espessuras em suas paredes. O diâmetro destes tubos também é chamado Nominal, pois sendo referencia 1″ = 33,40mm (externo), conforme tabela seguir.

Diametro externo5-s10-s40-s80-s160-s
dinpol.mmparedepesoparedepesoparedepesoparedepesoparedepeso
61/8″10,20--1,240,281,730,372,410,46--
81/4″13,72--1,650,502,240,633,020,81--
103/8″17,15--1,650,642,310,863,201,12--
151/2″21,341,650,812,111,022,771,293,731,644,751,94
203/4″26,671,651,032,111,302,871,713,912,225,542,88
251″33,401,651,312,772,123,382,544,553,296,354,24
321.1/4″42,161,651,672,772,733,563,444,854,546,355,60
401.1/2″48,261,651,932,773,163,684,115,085,487,147,24
502″60,331,652,422,773,983,915,535,547,588,7111,08
652.1/2″73,032,113,753,055,335,168,757,0111,579,5314,92
803″88,902,114,513,056,455,4911,457,6215,4811,1321,30
903.1/2″101,602,115,173,057,405,7413,768,0818,9012,7027,80
1004″114,302,115,833,058,356,0216,308,5622,6213,4933,50
1255″141,302,779,453,4011,606,5522,099,5331,3815,8849,10
1506″168,282,7711,303,4013,807,1128,6510,9743,1618,2467,40
2008″219,082,7714,803,7619,908,1842,9712,7064,5723,02111,30
25010″273,053,4022,604,1927,809,2760,3312,7081,5028,57172,20
30012″323,853,9631,404,5736,009,2771,9012,7097,4033,34238,80
35014″355,603,9634,404,7841,309,5382,5012,70109,10--
40016″406,404,2041,504,7847,309,5394,6112,70125,20--
45018″457,204,2046,804,7853,209,53106,8012,70139,16--
50020″508,004,7859,305,5468,609,53118,9012,70155,13--
60024″609,605,5482,506,3594,509,53141,1212,70187,07--
75030″762,006,35120,107,92149,489,53176,5812,70234,44--
61/8″10,20--1,240,281,730,372,410,46--
81/4″13,72--1,650,502,240,633,020,81--