标准编号:	GB 8335-2011
中文名称:	气瓶专用螺纹
英文名称:	Special threads for gas cylinders
中标分类:	J74    压力容器
行业分类:	GB    国家标准
ICS分类:	23.020.30 23.020.30    压力容器、气瓶 23.020.30
发布机构:	国家标准化委员会 国家质量监督检验检疫总局
发布日期:	2011-12-30
实施日期:	2012-12-1
标准状态:	现行
替代旧标准:	GB 8335-1998 气瓶专用螺纹
翻译语言:	英文
文件格式:	PDF
中文字符数:	12000 字
翻译价格(元):	630.00 元
交付时间:	付款后 1 个工作日

Special Threads for Gas Cylinders



1 Scope



This standard specifies the terms, symbols, basic profile and dimension of taper thread and cylindrical pipe thread for gas cylinder.

This standard is applicable to taper thread connecting the neck to valve of gas cylinder and cylindrical pipe thread connecting cap and neck ring of such cylinder (hereafter referred to as cylindrical thread).



The taper thread connecting the fusible plug to plug seat of gas cylinder with safety device may also be used by reference to this standard.



2 Normative References



The following referenced 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 192 General Purpose Metric Screw Threads - Basic Profile

GB/T 196 General Purpose Metric Screw Threads - Basic Dimensions

GB/T 197 General Purpose Metric Screw Threads - Tolerances

GB/T 3505 Geometrical product specifications (GPS) - Surface Texture: Profile Method - Terms Definitions and Surface Texture Parameters

GB/T 13005 Terminology of Gas Cylinders



3 Terms, Definitions and Symbols



3.1 Terms and definitions



For the purposes of this document, the terms and definitions established in GB/T 13005 and the followings apply.



3.1.1

basic plane

plane vertical to thread axis, with reference diameter, which is referred to as basic plane



Note: it's the large end plane for internal thread while the plane with distance to small end equal to basic distance for external thread



3.1.2

basic diameter

basic major diameter of internal thread or external thread



3.1.3

taper thread pitch

distance of parallel cone busbars between two points corresponding to adjacent teeth on pitch diameter line

Foreword i
1 Scope
2 Normative References
3 Terms, Definitions and Symbols
4 Taper Thread
5 Cylindrical Thread