ICS 83.140.99 CCS G 47 T/CSTM 00541 E—2022 Helicopter external mount buckets for firefighting 灭火用直升机挂载吊桶 (English Translation) Issue d by Chinese Society for Testing & Materials, Zhongguancun Issue date:202 2-11-11 Implementation date ：2023-02-11 CSTMhQÆSÑ^Ou( 全国团体标准信息平台 T/CSTM 00541E —2022 Foreword CSTM FC 05/TC 02 (The chemical materials field committee of Chinese Society for Testing & Materials ) is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative. This document is drafted in accordance with the rules given in the GB/T 1.1 —2020 Directives for standardizatio n — Part 1: Rules for the structure and drafting of standardizing documents. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsib le for identifying any or all such patent rights. This document was proposed by Field Committee CSTM/FC 05, Chemical materials . This document was prepared by Field Committee CSTM /FC 05, Chemical materials , Technical committee TC02, Rubber. CSTMhQÆSÑ^Ou( 全国团体标准信息平台 T/CSTM 00541E —2022 Helicopter external mount buckets for firefighting 1 Scope This document specifies the structure and materials, requirements, inspection rules, marking, packaging, transportation, storage and lifetime of helicopter external mount buckets for firefighting (buckets for short). The document describes test methods of the buckets. This document is applicable to the buckets which use rubber -coated fabrics as bucket body. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of thi s document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 528 —2009 Rubber , vulcanized or thermoplastic — Determination of tensile stress- strain properties GB/T 531.1 Rubber, vulcanized or thermoplastic — Determination of indentation hardness — Part 1 : Duromerer method (Shore hardness) GB/T 1682 —2014 Rubber, vulcanized ― Determination of low -temperature brittleness ― Single test piece method GB/T 3512 Rubber, vulcanized or thermoplastic ― Accelerated ageing and heat resistance tests GB/T 9881 Rubber ― Vocabulary GB/T 12586 Rubber or plastics -coated fabrics — Determination of resistance to damage by flexing GJB 150.9A —2009 Laboratory environmental test methods for military material — Part 9: Damp heat test HG/T 2580—2008 Rubber of plastics -coated fabrics — Determination of tensile strength and elongation at break HG/T 3050.3 Rubber - or plastics- coated fabrics — Determination of roll ch aracteristics — Part 3: Method for determination of thickness 3 Term s and definitions For the purpose of this document, the terms and definitions given in GB/T 9881 apply. 4 Structure and materials 4.1 Structure The buckets consist of three parts which are the bucket body, the control device and the suspension belt. Shown in figure 1. The bucket body consists of an inner bag and an outer bag. 4.2 Materials CSTMhQÆSÑ^Ou(全国团体标准信息平台