Seamless Carbon Steel Pipe A106
Variations in Outside Diameter
NPS Designator Permissible Variations
in Outside Diameter
Over inches Under inches
1/8 to 1 1/2, incl 1/64 (0.015) 1/64 (0.015)
Over 1 1/2 to 4, incl1/32 (0.031)1/32 (0.031)
Over 4 to 8, incl1/16 (0.062)1/32 (0.031)
Over 8 to 10, incl3/32 (0.093)1/32 (0.031)
Over 10 1% 1%
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