TS ISO 9095

TS ISO 9095 is a standard for continuous character marking and colour coding used to identify steel tubes by material. It focuses on ferritic and austenitic steel tubes used in the fabrication of piping systems, giving a visual identification approach for tubes that may otherwise look similar in storage, fabrication, or installation.

Continuous character marking means repeated legends or symbols applied along the tube surface, while colour coding uses colours to distinguish material categories or identification groups. In general technical practice, these two methods support traceability, stock control, and correct material selection during fabrication and assembly. The ferritic versus austenitic distinction matters because these steel families have different microstructures and are used for different service conditions and fabrication expectations.

This document specifies requirements for the preferred continuous character markings and colour codes for the steel tubes covered by its scope. It is concerned with visual material identification rather than with tube dimensions, strength properties, or general piping design. In other words, the standard addresses how the material identity is presented on the product, not the full performance specification of the tube itself.

As a withdrawn standard edition, it is mainly relevant as a reference point for how material identification of steel tubes was organised in this ISO-derived TSE document.