GB/T 12227-2005 in English

《GB/T 12227-2005通用阀门 球墨铸铁件技术条件》由TC188（全国阀门标准化技术委员会）归口，主管部门为中国机械工业联合会
本标准规定了通风阀门球墨铸铁件的技术要求、试验方法、检验规则及标志、包装与贮存等。本标准适用于通用阀门、法兰、管件及其他受压的球墨铸铁件。

1 Scope

This standard specifies the technical requirements, test methods, inspection rules as well as marking, packaging and storage of spheroidal graphite iron castings of general purpose valves.
This standard is applicable to general purpose valves, flanges, pipe fittings and other compressive spheroidal graphite iron castings (hereinafter referred to as castings).

2 Normative References

The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments (excluding corrigendum contents) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.

Contents
1 Scope
2 Normative References
3 Technical Requirements
4 Test Methods
5 Inspection Rules
6 Marking, Packaging and Storage