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GB/T 45900-2025 English PDF

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GB/T 45900-2025: Test method of buoyancy material and modules properties for manned submersible
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PDF similar to GB/T 45900-2025


Standard similar to GB/T 45900-2025

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Basic data

Standard ID GB/T 45900-2025 (GB/T45900-2025)
Description (Translated English) Test method of buoyancy material and modules properties for manned submersible
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard U05
Classification of International Standard 47.020.05
Word Count Estimation 22,276
Date of Issue 2025-06-30
Date of Implementation 2026-01-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 45900-2025: Test method of buoyancy material and modules properties for manned submersible

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National Standard of the People's Republic of China ICS 47.020.05CCS U 05 Performance of buoyancy materials and components for manned submersibles Test Method Test method of buoyancy material and modules properties for manned submersible Released on June 30, 2025 2026-01-01 implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface Ⅲ 1 Scope...1 2 Normative references 1 3 Terms and Definitions 1 4 Test requirements, content and procedures 2 5 Buoyancy material performance test 3 6 Buoyancy material component performance test...11 7 Test Report...17 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Standardization of Submersibles (SAC/TC 306). This document was drafted by. China Ship Science Research Center, Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences, China Shipbuilding Industry Corporation Limited The 710th Research Institute of the Company and the Marine Chemical Industry Research Institute Co., Ltd. The main drafters of this document are. Shi Dongchun, Hu Zhen, Ye Cong, Zhang Jingjie, Dong Weiyun, Zhao Wei, Jiang Xuyin, Wang Xuan, Yang Shenshen, Yan Kaiqi, Zhai Xiaokang, Ye Bin, Pan Shunlong, Li Wenyue, Wang Qingying, and Gao Jianzhou. Performance of buoyancy materials and components for manned submersibles Test Method

1 Scope

This document specifies the requirements, test items and test methods for performance testing of buoyancy materials and components for manned submersibles. This document is applicable to the performance evaluation test and product inspection of buoyancy materials and components for manned submersibles. Other underwater structures shall refer to this document. use. 2 Normative references The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 1804-2000 General tolerances - Tolerances of linear and angular dimensions without tolerance indications GB/T 2567-2021 Test method for properties of resin castings GB/T 13407 Terminology of submersibles and underwater devices ISO 21173.2019 Submersibles - Hydrostatic pressure test of pressure hulls and buoyancy materials pressure test-Pressure hull and buoyancy materials) China Classification Society, Rules for Classification of Diving Systems and Submersibles (2018) 3 Terms and Definitions Terms and definitions defined in ISO 21173.2019, GB/T 13407 and Rules for Classification of Diving Systems and Submersibles (2018) and the following The definitions apply to this document. 3.1 Buoyancy material The resin type material is made of hollow microspheres mixed with epoxy resin, which is made through a specific mold and molding process to retain the material Standard blocks with uniform and stable performance and no surface coating. 3.2 Buoyancy material module Various modules or components are made from standard blocks of buoyancy materials by bonding and machining. Note. It includes embedded parts, waterproof and impact-resistant coatings, referred to as buoyancy blocks. 3.3 embedded parts It is pre-buried inside the buoyancy block, firmly connected to the buoyancy block, and is a corrosion-resistant, high-strength metal or non-metal part. 3.4 water absorption of buoyancy material A physical quantity that measures the degree of water absorption by buoyant materials under simulated deep-sea environmental conditions. Note. Expressed as mass change rate.

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