GB/T 12620-2008Round and elongated apertures with round and square plate screens (English PDF)
长圆孔、长方孔和圆孔筛板
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China
Level / Type
National · Recommended
Issue date
April 16, 2008
Implementation date
October 1, 2008
Scope
GB/T 12620-2008 is the English-translated version of 长圆孔、长方孔和圆孔筛板.
GB/T 12620-2008 is the Chinese national standard on round and elongated apertures with round and square plate screens, in the field of mining and minerals.
The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it.
It was issued on 16 April 2008 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 October 2008.
Classification: ICS 73.120, CCS A28. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there.
The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.
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Document preview — GB/T 12620-2008
National Standard of the People's Republic of China
- ICS
- 73.120
- Classification
- A28
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China
Contents
- 1 Scope
- 2 Normative References
- 3 Terms and Symbols
- 4 Types and Parameters
- 5 Technical Requirements
- 6 Test Methods and Inspection Rules
- 7 Marking, Packing, Transport and Storage
Foreword
This Standard specifies the types and parameters, technical requirements, inspection rules, marking, packing, transport and storage of metal round and elongated aperture, elongated and square aperture and round aperture screen plate.
This Standard is applicable to the screen plate for screening, ventilation, decoration, mineral processing, grain, oil material and feed processing, sifting and filtering, the aperture shape is round and elongated aperture, square and elongated aperture, and round aperture.
1 Scope
This Standard specifies the types and parameters, technical requirements, inspection rules, marking, packing, transport and storage of metal round and elongated aperture, elongated and square aperture and round aperture screen plate.
This Standard is applicable to the screen plate for screening, ventilation, decoration, mineral processing, grain, oil material and feed processing, sifting and filtering, the aperture shape is round and elongated aperture, square and elongated aperture, and round aperture.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding amending errors in the text) 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 documents referred to applies.
GB/T 708 Dimension, Shape, Weight and Tolerances for Cold-rolled Steel Plates and Sheets
GB/T 1804 Tolerances and Fits-Limit Deviations of Dimensions without Individual Tolerance Indications (GB/T 1804-2000, eqv ISO 2768-1: 1989)
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection (GB/T 2828.1-2003, ISO 2859-1: 1999, IDT)
GB/T 10061 Screen Plates - Codification for Designating Perforations (GB/T 10061-1988, eqv ISO 7806:1983)
GB/T 15602 Industrial Screens and Screening Vocabulary (GB/T 15602-1995, eqv ISO 9045:1990)
GB/T 19360 Industrial Plate Screens - Specifications and Test Methods (GB/T 19360-2003, ISO 10630:1994, IDT) Foreword I
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding amending errors in the text) 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 documents referred to applies.
GB/T 708 Dimension, Shape, Weight and Tolerances for Cold-rolled Steel Plates and Sheets
GB/T 1804 Tolerances and Fits-Limit Deviations of Dimensions without Individual Tolerance Indications (GB/T 1804-2000, eqv ISO 2768-1: 1989)
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection (GB/T 2828.1-2003, ISO 2859-1: 1999, IDT)
GB/T 10061 Screen Plates - Codification for Designating Perforations (GB/T 10061-1988, eqv ISO 7806:1983)
GB/T 15602 Industrial Screens and Screening Vocabulary (GB/T 15602-1995, eqv ISO 9045:1990)
GB/T 19360 Industrial Plate Screens - Specifications and Test Methods (GB/T 19360-2003, ISO 10630:1994, IDT) Contents of GB/T 12620-2008 Foreword I
7 Marking, Packing, Transport and Storage
Appendix A (Informative) General Requirements of Heat Treatment on Screen Plate
Referred in GB/T 12620-2008:
GB/T 708-2006 Dimension, Shape, Weight, and Tolerance for Cold-Rolled Steel Plat *
GB/T 1804-2000 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications *
GB/T 2828.1-2012 Sampling procedures for inspection by attributea-Part1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection *
GB/T 10061-2008 Screen plants - Codification for designating perforations *
GB/T 15602-2008 Industrial screens and screening - Vocabulary *
GB/T 19360-2003 Industrial plate screens--Specifications and test methods padding: 6px;
color: rgb(153, 153, 153);
background-color: rgb(248, 248, 248);
border-bottom: 1px solid rgb(153, 153, 153);
GB/T 12620-2008 Round and elongated apertures with round and square plate screens (English) Standard No.
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Detail of GB/T 12620-2008 Standard No.
Round and elongated apertures with round and square plate screens Chinese Name 长圆孔, 长方孔和圆孔筛板
Chinese Classification A28
7 Marking, Packing, Transport and Storage
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 22 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 708Dimensions, shape, weight and tolerances for cold rolled steel sheet and strip
- GB/T 1804-2000General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
- GB/T 2828.1-2003Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
- GB/T 10061-1988Screen plants -- Codification for designating perforations
- GB/T 15602-1995Industrial screens and screening -- Vocabulary
- GB/T 19360-2003Industrial plate screens -- Specifications and test methods
ISO 2768 · ISO 2859 · ISO 7806 · ISO 9045.1990 · ISO 10630.1994
Cited by
- GB/T 46675-2025Grain and oil machinery - Integrated equipment of raw grain cleaning center
- GB/T 36091-2018Grain and oil machinery—Grain sieves for inspection
- JB/T 9822.1-2018Hammer mills for feed - Part 1: Technical requirements
- GB/T 35322-2017Grain and oil machinery - Emery roll whitening machines
- GB/T 35325-2017Grain and oil machinery - Endless screen precleaners
- JB/T 11434-2013Separating-type minor grain mills
Similar standards
Editions of GB/T 12620
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 12620-2008 | Round and elongated apertures with round and square plate screens | current edition | Current |
| GB/T 3943-1983 | Perforated plate with round and elongated apertures | merged into this edition | Superseded |
| GB/T 12620-1990 | Slots with round end and slots with square end plate screens | previous edition | Superseded |
This page sells the current edition, GB/T 12620-2008. Earlier editions are listed for reference only.
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Related Standards
GB/T 1804-2000 — General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 19360-2003 — Industrial plate screens -- Specifications and test methods
GB/T 708-2019 — Dimension, shape, weight and tolerance for cold-rolled steel strip and sheet
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