GB/T 21537-2021Cone rubber fender (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 replaces GB/T 21537-2008 "Cone Rubber Fenders", compared with GB/T 21537-2008, except for structural adjustment and editing In addition to the sexual changes, the main technical changes are as follows.

a) Added 7 types of fender specifications and mechanical properties (see 6.1.1, 6.3.1, 6.1 and 7.1 of the 2008 edition);

b) The mechanical properties and design deformation of R3 and R4 class fenders have been changed (see 6.3.1, 6.3.2, 7.1 and 7.2 of the 2008 edition);

c) The technical requirements for the adhesive peel strength of rubber and steel plates have been added (see 6.4);

d) The inspection rules have been changed (see 8.1, 8.2, 8.3, 8.4, 9.1, 9.2, and 9.3 of the 2008 edition);

e) Added judgment rules (see 8.5).

1 Scope

This document specifies the product marking, product structure, requirements, test methods, inspection rules, marking, packaging, transportation and storage, etc. of cone-shaped rubber fenders.

This document is applicable to cone-shaped rubber fenders with rubber and metal materials as the main body for berthing and shock absorption of ports, wharves and ships.

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 528 Determination of tensile stress and strain properties of vulcanized rubber or thermoplastic rubber

GB/T 531.1 Test method for indentation hardness of vulcanized rubber or thermoplastic rubber Part 1: Shore durometer method (Shore hardness)

GB/T 3512 Hot air accelerated aging and heat resistance test of vulcanized rubber or thermoplastic rubber

GB/T 7759.1 Determination of compression set of vulcanized rubber or thermoplastic rubber Part 1: Under normal and high temperature conditions

GB/T 7760 Determination of the bonding strength of vulcanized rubber or thermoplastic rubber and hard plates 90° peeling method

GB/T 7762-2014 Ozone cracking resistance static tensile test of vulcanized rubber or thermoplastic rubber

GB/T 16825.1 Inspection of static uniaxial testing machine Part 1: Inspection and test of force measuring system of tensile and (or) compression testing machine calibration

3 Terms and definitions

The following terms and definitions apply to this document.

4 Product marking

Cone rubber fenders (code CF) are marked in the following order.