This standard specifies the requirements of valves for import and export. And it is applicable to inspection of valve for import and export.
Note: by structure, valve may be classified into gate valve, stop valve, throttle valve, ball valve, butterfly valve, diaphragm valve, plug valve, safety valve, reducing valve, drain valve, blow-down valve, regulating valve, distribution valve, mixing valve and hydraulic control valve and so forth.
2 Normative References
The following references are indispensable for the application of this standard. For dated references, only the dated edition of the normative reference referred to applies. For undated ones, the latest edition of the normative document (including any amendments) applies.
GB/T 2828.1-2003 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 12220 General Purpose Industrial Valves - Marking
SN/T 0002 General Stipulations for Drafting of Rules for Inspection of Import and Export Mechanical Electrical Commodity
3 Terms and Definitions
Terms and definitions specified in GB/T 21465, GB/T 2828.1-2003 and SN/T 0002 as well as those below are applicable to this document.
3.1
Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 General 5 Inspection 6 Acceptable Lot Judgment and Validity 7 Disposal of the Unqualified Lot
