GB/T 22209-2021Marine no-asbestos fiber reinforced rubber gasket material (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document is a reference to GB/T 22209-2008 "Non-asbestos fiber reinforced rubber sheet for marine gaskets" and GB/T 22208-2008 "Marine Consolidated revision of "Test Methods for Non-Asbestos Fiber Reinforced Rubber Sheets for Gaskets".

This document replaces GB/T 22209-2008 and GB/T 22208-2008, and the main structure is in accordance with GB/T 22209-2008, which corresponds to The main technical changes are as follows.

a) Added the grades of non-asbestos gasket materials (see Table 3, GB/T 22209-2008 Table 3), and correspondingly increased the performance index requirements (See Table 4, Table 4 of GB/T 22209-2008);

b) The performance index requirements of KQG-001 and KQG-003 grades have been changed (see Table 4, GB/T 22209-2008 Table 4);

c) Added "Asbestos content (threshold value) <=0.1%" (see Table 4) and corresponding test methods (see 5.14);

d) The density test method is changed (see 5.3, Chapter 3 of GB/T 22208-2008);

e) Changed the air tightness test method (see 5.10, Chapter 10 of GB/T 22208-2008).

1 Scope

This document specifies the requirements, test methods, inspection rules, markings, packaging and storage of non-asbestos fiber reinforced rubber gasket materials for ships.

This document is applicable to gas, water, steam, oil, medium acid and alkali with working temperature not higher than 350°C and nominal pressure not higher than 4.0MPa Design, manufacture and acceptance of non-asbestos gasket materials for sealing of ship piping systems with other media. Non-asbestos sealing material for other equipment and pipelines Materials can also be used by reference.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 540 Test method for oil-resistant asbestos rubber sheet

GB/T 10707 Determination of the burning properties of rubber

GB/T 12385 Test method for sealing performance of gaskets for pipe flanges

GB/T 20671.2-2006 Classification system and test methods for non-metallic gasket materials Part 2: Compression rate and rebound rate of gasket materials experiment method

GB/T 20671.3-2020 Classification system and test methods of non-metallic gasket materials Part 3: Gasket material liquid resistance test method

GB/T 20671.5-2020 Classification system and test methods for non-metallic gasket materials Part 5: Test for creep relaxation rate of gasket materials Test method

GB/T 20671.7-2006 Classification system and test methods for non-metallic gasket materials Part 7: Tensile strength of non-metallic gasket materials Degree test method

GB/T 20671.8 Non-metallic gasket material classification system and test method Part 8: Non-metallic gasket material flexibility test method

GB/T 22308 Test method for density of gasket material

GB/T 23263 Method for determination of asbestos content in products API607 quarter-turn valve and non-metal seat valve fire test (Firetestforquarter-turnvalvesand valvesequippedwithnonmetalicseats)

3 Terms and definitions

The following terms and definitions apply to this document.