Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 23448-2009 Sanitary ware - Flexible hose, in addition to editorial changes, the following main technical changes have been made with respect to GB/T 23448-2009.
——The definition of flexible hose for sanitary tapware is revised (see 3.1; 3.1 of Edition 2009);
——The definition of pullout hose for faucet is added (see 3.5);
——The definition of sleeve is added (see 3.9);
——The definition of flexible hose contacted with drinking water is added (see 3.10);
——The classification and code of product are revised (see Clause 4; Clause 4 of Edition 2009);
——The material requirements are revised (see Clause 5; Clause 5 of Edition 2009);
——The minimum dimensional requirements of inner diameter of flexible hose are deleted (see 6.2.2 of Edition 2009);
——The requirements of effective connecting thread of flexible hose are added (see 6.3.1);
——The flow requirements are added (see 6.6);
——The bending resistance requirements of the pullout hose for faucet are added (see 6.9);
——The requirements of cold and hot cycle resistance of flexible hose for washing and pullout hose for faucet are added (see 6.10);
——The surface corrosion resistance requirements are revised (see 6.12; 6.1.3 in 2009 edition);
——The requirements of hazardous substance extracted limit are added (see 6.13 and Annex A);
——The provisions of flow test method are added (see 7.6);
——The provisions of stretch resistance test method are revised (see 7.7; 7.6 in Edition 2009);
——The provisions of impulse resistance test method are revised (see 7.8; 7.7 in Edition 2009);
——The provisions of bending resistance test method are revised (see 7.9; 7.8 in Edition 2009);
——The provisions of surface corrosion resistance test method are revised (see 7.12; 6.1.3 in Edition 2009);
——The provisions of hazardous substance extraction test method are added (see 7.13 and Annex B).
This standard was proposed by China Building Materials Federation.
This standard is under the jurisdiction of National Technical Committee on Architecture and Sanitary Ceramics of Standardization Administration of China (SAC/TC 249).
The previous edition of this standard is as follows:
——GB/T 23448-2009.
Sanitary ware - Flexible hose
1 Scope
This standard specifies the terms and definitions, classification and code, materials, technical requirements, test methods, inspection rules, marking, identification, packaging, transportation and storage of flexible hose for sanitary tapware.
This standard is applicable to flexible hose for sanitary tapware with working pressure not more than 1.0MPa and water supply temperature not more than 90℃.
2 Normative references
The following documents are indispensable for the application of this 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 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 5750.6 Standard examination methods for drinking water - Metal parameters
GB/T 5750.8 Standard examination methods for drinking water - Organic parameters
GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates - Rating of test specimens and manufactured articles subjected to corrosion tests
GB/T 7307 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads
GB/T 7759.1 Rubber, vulcanized or thermoplastic - Determination of compression set - Part 1: At ambient or elevated temperatures
GB/T 7759.2 Rubber, vulcanized or thermoplastic - Determination of compression set - Part 2: At low temperatures
GB/T 10125 Corrosion tests in artificial atmospheres - Salt spray tests
GB/T 16662 Terms of equipments and materials for building water supply and drainage
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 16662 and the following apply.
3.1
flexible hose for sanitary tapware
flexible pipe used for interconnection between cold and hot water supply pipelines and water sanitary ware or between sanitary ware and sanitary ware
3.2
flexible link hose for water
flexible hose used for connecting water supply pipelines with water appliances (e.g. urinal, water heater, faucet, washing machine, etc.)
3.3
flexible hose for shower
flexible hose for connecting water supply pipeline or faucet with shower
3.4
flexible hose for washing
flexible hose for connecting water supply pipelines and washing nozzle
3.5
pullout hose for faucet
flexible hose for connecting the water outlet of kitchen water nozzle or basin water nozzle with water outlet nozzle
3.6
flexible hose for cool water
applicable to flexible hose with water temperature not more than 50℃
3.7
flexible hose for hot water
applicable to flexible hose with water temperature more than 50℃.
3.8
length of flexible hose
distance between the outer end surfaces of the two joints of flexible hose
3.9
sleeve
device used to fix inner pipe to joint of flexible hose
3.10
flexible hose contacted with drinking water
flexible hose installed in domestic drinking water delivery pipelines for connecting water supply pipelines with water supply appliances (e.g. kitchen water nozzles, basin water nozzles or drinking fountains, etc.)
4 Classification and code
See Table 1 for the classification and code of products.
Table 1 Classification and code of flexible hose for sanitary tapware
Classification Product Code
Classification by function Flexible link hose for water L
Flexible hose for shower S
Flexible hose for washing W
Pullout hose for faucet P
Classification by health standards Flexible hose contacted with drinking water D
Flexible hose contacted with undrinkable water N
Classification by temperature of used water Flexible hose for cool water C
Flexible hose for hot water H
5 Materials
5.1 All the materials of the products in contact with drinking water directly shall not change the water quality, appearance, taste and smell, etc. of drinking water under the specified use conditions hereof.
5.2 The material of rubber sealing ring shall be tested for 24h at (-10±1)℃ and (70±1)℃ respectively according to the methods specified in GB/T 7759.1 and GB/T 7759.2, and the compression set shall not exceed 20%.
5.3 Weaving wires, joints and sleeves for flexible hose shall be made of corrosion resistant materials.
6 Technical requirements
6.1 Appearance
6.1.1 The surface of the metallic outer pipe shall be free from defects such as peeling, bubbles, scale, rust, cracks, oil stains, obvious scratches, indentations, exploding wire, broken wire and sharp folds; the surface of the non-metallic outer pipe shall be free from obvious corrugations, weld marks, scratches and scraps and damages.
6.1.2 The inner and outer surfaces of the flexible hose joint shall be free from obvious defects such as cracks and unevenness; the surface of the thread shall be free from defects such as broken thread and dents.
6.2 Dimensions
The nominal dimension of the product shall be determined by the manufacturer and the permissible length deviation shall meet those specified in Table 2.
Table 2 Permissible length deviation of product In mm
Product length L L≤500 5002 000
Permissible upper deviation ΔL1 +10 +20 +30 +40
Permissible lower deviation ΔL2 0 0 0 0
6.3 Threaded connection
6.3.1 The thread precision of flexible hose joint shall conform to the requirements of GB/T 7307, and the precision grade of external thread shall not be lower than Grade B. The minimum length of the effective connecting thread of the flexible hose shall reach the provisions specified in Figure 1 and Table 3. For special products, the specifications stipulated in the contract are allowed.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and code 5 Materials 6 Technical requirements 7 Test methods 8 Inspection rules 9 Marking and identification 10 Packaging, transportation and storage Annex A (Normative) Requirements for the limit of hazardous substances extracted from flexible hose Annex B (Normative) Testing method for metallic and organic compound extraction
ICS 91.140.70 Q 31 中华人民共和国国家标准 GB/T 23448—2019 代替GB/T 23448—2009 卫生洁具 软管 Sanitary ware—Flexible hose 2019—08—30发布 2020—07—01实施 国家市场监督管理总局 中国国家标准化管理委员会 发布 前言 本标准按照GB/T 1.1—2009给出的规则起草。 本标准代替GB/T 23448—2009《卫生洁具 软管》,与GB/T 23448—2009相比,除编辑性修改外,主要技术变化如下: ——修改了卫生洁具用软管定义(见3.1,2009年版的3.1); ——增加了抽取软管定义(见3.5); ——增加了套管定义(见3.9); ——增加了饮用水软管定义(见3.10); ——修改了产品的分类与代号(见第4章,2009年版的第4章); ——修改了材料要求(见第5章,2009年版的第5章); ——删除了软管内径最小尺寸要求(见2009年版的6.2.2); ——增加了软管有效连接螺纹的要求(见6.3.1); ——增加了流量要求(见6.6); ——增加了抽取软管抗弯曲要求(见6.9); ——增加了洗涤软管和抽取软管耐冷热循环要求(见6.10); ——修改了表面耐腐蚀要求(见6.12,2009年版的6.1.3); ——增加了有害物析出限量要求(见6.13和附录A); ——增加了流量试验方法的规定(见7.6); ——修改了抗拉伸试验方法的规定(见7.7,2009年版的7.6); ——修改了抗脉冲试验方法的规定(见7.8,2009年版的7.7); ——修改了抗弯曲试验方法的规定(见7.9,2009年版的7.8); ——修改了表面耐腐蚀试验方法的规定(见7.12,2009年版的6.1.3); ——增加了有害物析出试验方法的规定(见7.13和附录B)。 本标准由中国建筑材料联合会提出。 本标准由全国建筑卫生陶瓷标准化技术委员会(SAC/TC 249)归口。 本标准所代替标准的历次版本发布情况为: ——GB/T 23448—2009。 卫生洁具 软管 1 范围 本标准规定了卫生洁具用软管的术语和定义、分类与代号、材料、技术要求、试验方法、检验规则、标志、标识、包装、运输和贮存。 本标准适用于工作压力不大于1.0 MPa,供水温度不超过90℃的卫生洁具用软管。 2规范性引用文件 下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。 GB/T 2828.1计数抽样检验程序 第1部分:按接收质量限(AQL)检索的逐批检验抽样计划 GB/T 5750.6 生活饮用水标准检验方法 金属指标 GB/T 5750.8 生活饮用水标准检验方法 有机物指标 GB/T 6461—2002 金属基体上金属和其他元机覆盖层 经腐蚀试验后的试样和试件的评级 GB/T 7307 55°非密封管螺纹 GB/T 7759.1 硫化橡胶或热塑性橡胶 压缩永久变形的测定 第1部分:在常温及高温条件下 GB/T 7759.2 硫化橡胶或热塑性橡胶 压缩永久变形的测定 第2部分:在低温条件下 GB/T 10125 人造气氛腐蚀试验 盐雾试验 GB/T 16662建筑给水排水设备器材术语 3术语和定义 GB/T 16662界定的以及下列术语和定义适用于本文件。 3.1 卫生洁具用软管 flexible hose for sanitary tapware 用于冷、热水给水管道与用水卫生洁具之间或卫生洁具与卫生洁具之间相互连接的柔性管。 3.2 连接软管 flexible link hose for water 用于连接给水管路与用水器具(如:便器、热水器、水嘴、洗衣机等)的软管。 3.3 淋浴软管 flexible hose for shower 用于连接给水管路或水嘴与淋浴花洒的软管。 3.4 洗涤软管 flexible hose for washing 用于连接给水管路与洗涤喷头的软管。 3.5 抽取软管pullout hose for faucet 用于厨房水嘴或面盆水嘴出水口与出水喷头连接的软管。 3.6 冷水软管 flexible hose for coon water 适用水温不高于50℃的软管。 3.7 热水软管 flexible hose for hot water 适用水温高于50℃的软管。 3.8 软管长度length of flexible hose 软管两接头外端面之间的距离。 3.9 套管 sleeve 将内管固定到软管接头的装置。 3.10 饮用水软管 flexible hose contacted with drinking water 安装在生活饮用水输送管道,用于连接供水管路与给水器具(如:厨房水嘴、面盆水嘴或饮水机等)的软管。 4分类与代号 产品的分类与代号见表1。 表1 卫生洁具用软管分类与代号 分类 产品 代号 按用途分类 连接软管 L 淋浴软管 S 洗涤软管 W 抽取软管 P 按卫生标准分类 饮用水软管 D 非引用水软管 N 按使用水温分类 冷水软管 C 热水软管 H