GB/T 12226-2005 in English

《GB/T 12226-2005通用阀门 灰铸铁件技术条件》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
本标准规定了通用阀门灰铸铁件的技术要求、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、管件及其他受压的石墨为片状的灰铸铁件。

1 Scope

This Standard specifies technical requirements, test methods, inspection rules, as well as marking, packaging, and storage of general purpose industrial valves - flake graphite iron castings.
This Standard is applicable to general purpose industrial valves, flanges, pipe fittings and other pressure-containing flake graphite iron castings(hereinafter referred to as casting).

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), 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 edition of these documents is applicable. For undated references, the latest edition applies.
GB/T 6060.1 Roughness Comparison Specimens - Cast Surfaces (GB/T 6060.1—1997，eqv ISO 2632-3;1979)
GB/T 6414 Castings - System of Dimensional Tolerances and Machining Allowances (GB/T 6414—1999，eqv ISO 8062:1994)
GB/T 7216 Gray Cast Iron Metallography (GB/T 7216—1987，neq ISO 945:1975)
GB/T 9439-1988 Grey Iron Castings
GB/T 11351 Mass Tolerances for Castings