ISO 1127:1992(en) is standard for Stainless steel tubes Dimensions, tolerances and conventional masses per unit length. International Standard ISO 1127 was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings, Sub-Committee SC 1, Steel tubes.
This ISO 1127 International Standard specifies the diameters, thicknesses, tolerances and conventional masses per unit length of stainless steel tubes. Standard references is by ISO 5252:1991, Steel tubes — Tolerance systems.