T/FSMA 002-2024 Active Group standards

T/FSMA 002-2024 Stainless Steel Water Pipes and Fittings Green Passivation Protection Standard

T/FSMA 002-2024

Publish Date: 2025-05-28 Implement Date: 2025-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/FSMA 002-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: \nMetal structure

Publish Date: 2025-05-28

Implement Date: 2025-07-01

Scope

Main technical content: Standardization, automation, intelligence, process-oriented, scale-up, and branding are clear directions for improving the technological level of stainless steel seamless and welded water pipes and fittings. In recent years, with the expansion of production scale, technological advancement, and accelerated promotion and popularization of stainless steel water pipes and fittings, as well as the diversification of application scenarios, green passivation and rust protection have become key processes for ensuring quality and safe application. The number of stainless steel water pipe and fitting enterprises choosing to add passivation and rust protection processes has rapidly increased, and the innovation and upgradation of green passivation and rust protection technologies and equipment have accelerated. The requirements for standardization, standardization, and innovation in technical processes have become more prominent. The format of this standard follows the provisions of GB/T 1.1-2020 "Guide for Standardization Work - Part 1: Structure and Drafting Rules for Standardization Documents". Passivation agent: A chemical liquid specifically used for passivation and rust protection of stainless steel water pipes and fittings. Equipment: Production equipment specifically used for passivation and rust protection of stainless steel water pipes and fittings. Decalcification: Using strong oxidizing inorganic acids such as nitric acid or hydrogen peroxide to chemically react with residual metal ions or yellow oxide films on the surface of stainless steel water pipes and fittles after pickling treatment, achieving a clean, shiny, and pollution-free surface. Neutralization: After pickling and passivation processes, stainless steel water pipes and fittings are immersed in a 1–3% caustic soda or an equivalent amount of sodium carbonate solution to neutralize residual acid on the surface.