GB, GB/T, GBT Chinese Standard(English-translated version) - Catalog002 PDF Download

Author: CODEOFCHINA - Dr. Meng Yongye
Publisher: Codeofchina Inc.
ISBN:
Category : Architecture
Languages : en
Pages : 3871

View

Book Description
All English-translated Chinese codes are available at: www.codeofchina.com

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 221

View

Book Description
This standard specifies technical requirements of surveillance digital video and audio coding and decoding in the field of safety protection. This standard is applicable to real-time compression, transmission, broadcast, storage and other video and audio business in the field of safety protection, which may be used in other video and audio coding and decoding fields for reference.

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 31

View

Book Description
This part of GB 25974 specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging and storage for power set legs (hereinafter referred to as legs) and rams of powered support for coal mine. This part is applicable to legs and rams of powered support for coal mine.

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 87

View

Book Description
This standard specifies the outlined details of safety of machinery standards. This standard may help the designers and manufacturers of machinery and associated equipment, particularly where specific Category C standard is unavailable, to correctly understand relevant safety of machinery standards. Note: this standard does not cover the contents of Category C standards.

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 42

View

Book Description
This part of GB 25974 specifies the terms and definitions, classification, requirements, test methods, inspection rules, marking, packaging and storage for hydraulic control system and valves of powered support for coal mine (hereinafter referred to as support). This part is applicable to various supports for coal mine and other hydraulic control system and valves with supporting equipment, including various hydraulic control systems, yield valves, pilot check valves, directional valves and shut-off valves. This part is not applicable to valves in pressurizer, power set legs and ram (i.e. foot valve of power set legs).

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 69

View

Book Description
This part of GB 3836 specifies the general requirements for construction, testing and marking of electrical equipment and Ex components intended for use in explosive atmospheres. Unless modified by one of the standards supplementing this standard, electrical equipment complying with this standard is intended for use in hazardous areas in which explosive atmospheres exist under normal atmospheric conditions of Temperature: -20℃ to +60℃; Pressure: 80kPa to 110kPa; Air with normal oxygen content (Volume ratio): 21%. The application of electrical equipment in atmospheric conditions outside this range requires special consideration and may require additional assessment and testing. Note 1: Although the normal atmospheric conditions above give a temperature range for the atmosphere of -20℃ to +60℃, the normal ambient temperature range for the equipment is-20℃ to +40℃, unless otherwise specified and marked, see 5.1.1. Note 2: In designing equipment for operation in explosive atmospheres under conditions other than the atmospheric conditions given above, this standard may be used for guidance. However, additional testing related specifically to the intended conditions of use is recommended. This is particularly important when the types of protection 'flameproof enclosure "d"' (GB 3836.2-2010) and 'intrinsic safety "i"' (GB 3836.4-2010 or GB 12476.4-2010) are applied. Note 3: Requirements given in this standard result from an ignition hazard assessment made on electrical equipment. The ignition sources taken into account are those found associated with this type of equipment, such as hot surfaces, mechanically generated sparks, thermite reactions, electrical arcing and static electric discharge in normal industrial environments. Note 4: It is acknowledged that, with developments in technology, it may be possible to achieve the objectives of the GB 3836 series of standards in respect of explosion prevention by methods that are not yet fully defined. Where a manufacturer wishes to take advantage of such developments, this International Standard, as well as other standards in the GB 3836 series, may be applied in part. It is intended that the manufacturer prepare documentation that clearly defines how the GB 3836 series of standards has been applied, together with a full explanation of the additional techniques employed. Under such circumstances,, the designation "Ex s" has been reserved to indicate a type of protection that is not defined by the GB 3836 series of standards, Note 5: Where an explosive gas atmosphere and a combustible dust atmosphere are, or may be, present at the same time, the simultaneous presence of both should be considered and may require additional protective measures. This standard does not specify requirements for safety, other than those directly related to the explosion risk. Ignition sources like adiabatic compression, shock waves, exothermic chemical reaction, self ignition of dust, naked flames and hot gases/liquids, are not addressed by this part. Note 6: Such equipment should be subjected to a hazard analysis that identifies and lists all of the potential sources of ignition by the electrical equipment and the measures to be applied to prevent them becoming effective. This standard is supplemented or modified by the following standards concerning specific types of protection: GB 3836.2-2010 Gas-Flameproof Enclosures "d; GB 3836.3-2010 Gas-Increased Safety "e; GB 3836.4-2010 Gas-Intrinsic Safety "i; GB 3836.5-2004 Gas-Pressurized Enclosures "p; GB 3836.6-2004 Gas-Oil Immersion "o; GB 3836.7-2004 Gas-Powder Filling "q; GB 3836.8-2003 Gas-Type of Protection "n; GB 3836.9-2006 Gas-Encapsulation "m; GB 12476.7-2010 Dust-Pressurization "pD; GB 12476.4-2010 Dust-Intrinsic Safety "iD; GB 12476.6-2010 Dust-Encapsulation "mD; IEC 61241-1 Dust-Protection by Enclosures "tD. This standard is supplemented or modified by the following equipment standards: ——GB 3836.18-2010 "Explosive Atmospheres-Part 18: Intrinsically Safe System"; ——GB 3836.20-2010 "Explosive Atmospheres-Part 20: Equipment with Equipment Protection Level (EPL) Ga"; ——GB 7957-2003 "General Requirements for Safety of Cap Lamp"; ——GB 19518.1-2004 "Electrical Apparatus for Explosive Gas Atmospheres Electrical Resistance Trace Heating Part 1: General and Testing Requirements"; ——IEC 60079-28 "Explosive Atmospheres-Part 28: Protection of Equipment and Transmission Systems Using Optical Radiation. This part of GB 3836 together with other parts in the GB 3836 series and the additional standards mentioned above, are not applicable to the construction of electro-medical apparatus, shot-firing exploders, test devices for exploders, and shot-firing circuits. Note 7: "Flameproof enclosures" and "Flameproof type" in this part of GB 3836 are synonym.

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 19

View

Book Description
This part of GB 26255 specifies terms and definitions, symbols and abbreviations, materials, general requirements, performance requirements, test method, mark and labels, packaging, transportation and storage for gas polyethylene pipe systems for connecting, to polyethylene (PE) pipes, a metal pipe or fitting, conforming to GB 15558, of nominal outside diameter greater than 63 mm. It is applicable to mechanical fittings in which all load-bearing elements of the joint are metal and specifies the anti-load capability at the end. This part specifies the fittings intended for use with PE pipes, including metal straight joint, elbow, flange, tee metal converter, these fittings producing either permanent joints or joints which can be dismantled. If it is intended for assembly with a metal pipe or fitting, such connections may be flanged or welded connections. This part is applicable only to mechanical fittings with normal operating-temperature limits between -20℃ and +40℃. It is the purpose of this part to provide performance requirements that will ensure full sealing and loading capacity of metal fitting and PE pipe connection joint so that the PE piping will yield rather than pull out of the mechanical joint when subjected to tensile forces or pressure.

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 36

View

Book Description
1 Scope This part of GB/T 3323 specifies techniques of radiographic examination of fusion welded joints of metallic materials. This part is applicable to the radiographic examination of welded joints of plates and pipes or other welded joints. This part does not specify acceptance levels for radiographic examination of welded joints of metallic materials. If contracting parties apply lower test criteria, it is possible that the quality of tested image is declined significantly. Note: This part meets the requirements of GB/T 19943, and the detector used is film. 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 9445 Non-destructive testing - Qualification and certification of NDT personnel (GB/T 9445-2015, ISO 9712:2012, IDT) GB/T 12604.2 Non-destructive testing - Terminology - Terms used in radiographic testing (GB/T 12604.2-2005, ISO 5576:1997, IDT) GB/T 19348.1 Non-destructive testing - Industrial radiographic film - Part 1: Classification of film systems for industrial radiography (GB/T 19348.1-2014, ISO 11699-1:2008, MOD) GB/T 19348.2 Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values (GB/T 19348.2-2003, ISO 11699-2:1998, IDT) GB/T 19802 Non-destructive testing - Industrial radiographic illuminators - Minimum requirements (GB/T 19802-2005, ISO 5580:1985, IDT) GB/T 19943 Non-destructive test - Radiographic examination of metallic materials by X- and gamma-rays - Basic rules (GB/T 19943-2005, ISO 5579:1998, IDT) GB/T 23901.1 Non-destructive testing - Image quality of radiographs - Part 1: Determination of the image quality value using wire-type image quality indicators (GB/T 23901.1-2019, ISO 19232-1:2013, IDT) GB/T 23901.2 Non-destructive testing - Image quality of radiographs - Part 2: Determination of the image quality value using step/hole-type image quality indicators (GB/T 23901.2-2019, ISO 19232-2:2013, 1DT) GB/T 23901.4 Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables (GB/T 23901.4-2019, ISO 19232-4:2013, IDT) GB/T 25758 (All parts) Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 70

View

Book Description
This part of GB 3836 specifies the requirements for the design, construction, testing and marking of electrical apparatus with type of protection increased safety "e" intended for use in explosive gas atmospheres. This standard applies to electrical apparatus where the rated voltage does not exceed 11 kV r.m.s. a.c. or d.c. Additional measures are applied to ensure that the apparatus does not produce arcs, sparks, or excessive temperatures in normal operation or under specified abnormal conditions. This standard supplements and modifies the general requirements of GB 3836.1-2010. Where a requirement of this standard conflicts with a requirement of GB 3836.1-2010, the requirement of this standard takes precedence.

Author: https://www.codeofchina.com
Publisher: https://www.codeofchina.com
ISBN:
Category : Architecture
Languages : en
Pages : 48

View

Book Description
This Standard specifies the requirements of service, design, manufacture, and testing of electronic equipment, as well as basic hardware and software requirements considered necessary for durable and reliable equipment. Additional requirements in other standards or specifications may complement this Standard, if applicable. List of subclauses of this Standard in which agreement between the parties is mentioned is detailed in Appendix B. This Standard applies to all electronic equipment for control, regulation, protection, supply, etc. installed on rail vehicles (including subway and urban rail vehicle).The equipment may be powered by the batteries or generators of vehicles or powered by a low-voltage power supply with or without a direct connection to the contact system (transformer, voltage divider and auxiliary power supply).For the purposes of this Standard, electronic equipment is defined as equipment mainly composed of semiconductor devices and recognized associated components. These components will mainly be mounted on printed boards. Note: sensors (current, voltage, speed, etc.) and firing unit printed board for power electronic equipment are covered by this Standard. Complete firing units are covered by GB/T 25122.1. This Standard is not applicable to the power electronic equipment in the main circuits and auxiliary circuits.