GB/T 11143-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11143-2025	359	Add to Cart	4 days	Test method for rust-preventing characteristics of inhibited mineral oil in the presence of water	Valid
GB/T 11143-2008	299	Add to Cart	3 days	Standard test method for rust-preventing characteristics of inhibited mineral oil in the presence of water	Valid
GB 11143-1989	RFQ	ASK	3 days	Inhibited mineral oil--Test method of rust preventing characteristics in the presence of water	Obsolete
GB/T 11143-1989	359	Add to Cart	3 days	Inhibited mineral oil--Test method of rust preventing characteristics in the presence of water	Obsolete

Similar standards

GB/T 11143   GB/T 50034   GB/T 50082   

Basic data

Standard ID: GB/T 11143-2025 (GB/T11143-2025)
Description (Translated English): Test method for rust-preventing characteristics of inhibited mineral oil in the presence of water
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E34
Classification of International Standard: 75.100
Word Count Estimation: 18,139
Date of Issue: 2025-10-05
Date of Implementation: 2026-05-01
Older Standard (superseded by this standard): GB/T 11143-2008
Issuing agency(ies): State Administration for Market Regulation and Standardization Administration of China

GB/T 11143-2025: Test method for rust-preventing characteristics of inhibited mineral oil in the presence of water

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ICS 75.100 CCSE34 National Standards of the People's Republic of China Replaces GB/T 11143-2008 Adding inhibitors to mineral oil in the presence of water Rust prevention performance test method Published on 2025-10-05 Implemented on May 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document supersedes GB/T 11143-2008 "Test Method for Rust Prevention Performance of Mineral Oils with Added Inhibitors in the Presence of Water", and is consistent with GB/T 11143- Compared to.2008, aside from structural adjustments and editorial changes, the main technical changes are as follows. a) Added terms and definitions (see 3.1); b) The reagent used for synthesizing seawater was changed, with CaCl2·2H2O replacing CaCl2 (see 5.7, 6.6 in the.2008 edition); c) The term "oil bath" has been changed to "liquid bath" (see 6.1, 5.1 in the.2008 edition); d) The requirements for comparative tests on test steel bars and the principles for handling test steel bars that rust during the test have been added (see 8.2); e) The method for determining corrosion after the test has been changed (see 10.2,.2008 version of 10.2). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Petroleum Products and Lubricants (SAC/TC280). This document was drafted by. Sinopec Research Institute of Petroleum Processing Co., Ltd., Sinopec Lubricating Oil Co., Ltd., and Beijing Petroleum Products Co., Ltd. Quality Supervision and Inspection Center, Beijing Petroleum Branch of China Petroleum & Chemical Corporation, and Beijing Institute of Product Quality Supervision and Inspection. The main drafters of this document are. Zheng Yu, Mei Li, Qin Tuo, Li Heran, Tian Deying, Yang He, Zhao Jie, Wang Chao, Wang Shoucheng, Shi Xia, and Xu Hualing. Hanna. This document was first published in 1989, revised for the first time in.2008, and this is the second revision.

Introduction

In equipment such as steam turbines, lubricating oil may become contaminated with moisture, causing rust on iron components. This experiment demonstrates the effectiveness of adding an appropriate amount of inhibitor. Mineral oils help prevent corrosion caused by this condition. This method is also applicable to other oils such as hydraulic oils and circulating oils, and those with a density higher than water. Large liquids can be used to determine the specifications of new oil products, as well as to monitor oil products currently in use. Adding inhibitors to mineral oil in the presence of water Rust prevention performance test method Warning---Personnel using this document should have practical experience in formal laboratory work. The use of this document may involve certain hazardous activities. This document does not address all potential safety issues related to the materials, equipment, and operations used. Users are responsible for taking appropriate safety and health precautions. Implement the measures and ensure they comply with the conditions stipulated by relevant national laws and regulations.

1 Scope

This document describes a method for determining the rust-preventive properties of mineral oils with added inhibitors in the presence of water. This document applies to evaluating the rust-preventive properties of mineral oils with inhibitors, particularly turbine oils, on ferrous components when mixed with water. Hydraulic oil, circulating oil, and other oil products, as well as liquids with a density greater than water.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 1220-2007 Stainless Steel Bars GB/T 4756 Manual Sampling Method for Petroleum Liquids GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories NB/SH/T 0006 Industrial White Oil

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 rust Reddish-brown or black spots, pits, or unevenness appear on the surface of the cylindrical test steel bar. 4.Method Overview Mix 300 mL of sample with 30 mL of distilled water or synthetic seawater, and immerse the cylindrical test steel rod completely in the mixture at 60℃± Stirring should be carried out at 1℃. A test period of 24 hours is recommended, but an appropriate test period can be determined based on the requirements of both parties. The test period will conclude... After the test, observe the traces and extent of rust on the steel rod. 5.Reagents and Materials 5.1 Isooctane ......

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